Kentucky bluegrass can take 2 to 4 weeks to germinate and requires extra maintenance in the initial stages. Soil temperatures should be in the appropriate range for the variety of grass. Hi, great site! Get daily tips & tricks to help make your best home. Seeds of cool-season grasses sprout best in soils between 50 and 65 degrees Fahrenheit (10 and 18 degrees Celsius). Seed Germination Chart. Let us move on to warm-season grass to find out the ideal grass seed germination temperatures for these types of grasses. Necessary cookies are absolutely essential for the website to function properly. Crabgrass Lawn is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. copyright 2023 Mequoda Systems, LLC These grass seeds do well in air thats 80F and warm soil thats roughly 65F to 70F. Cool-season grass seed germinates best when soil temperatures reach 50 to 60 degrees Fahrenheit. We dormant seed when the weather will be consistently cold, under 40 degrees. Weeds like creeping charlie, clover, crab grass, etc are taking over. callback: cb However, you have to ensure that your watering regime is on point as excess water, noticeable if water pools, can reduce germination rates through the seeds rotting. Getting straight to Cookies collect information about your preferences and your devices and are used to make the site work as you expect it to, to understand how you interact with the site, and to show advertisements that are targeted to your interests. When to Apply a Pre-Emergent Crabgrass Preventer? I know many experienced gardeners plant seeds at the right time intuitively, but its always nice to have the backup as a reminder. support@foodgardening.mequoda.com. Lawn Care Advice Lawn Equipment Reviews. } I live in upstate NY with about an acre of yard. In the example shown here for carrot, germination can take place within the wide range of 41F to over 95F, but peaks between 68F to 86F, with an optimal temperature of 77F. Assuming that the first number represents temperatures for roughly 16 hours and the second for approximately 8 hours, we can infer that the first number means temperatures that are typically cooler in the evening and early morning and that the second number represents temperatures that generally are cooler during the middle of the day. Cool Season Grasses Germinate Best Between 50 and 65 Degrees Fahrenheit. Once the temperature exceeds 75F growth slows down, with it becoming dormant when temperatures exceed 90F.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'gardeninglatest_com-large-mobile-banner-2','ezslot_4',184,'0','0'])};__ez_fad_position('div-gpt-ad-gardeninglatest_com-large-mobile-banner-2-0');if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'gardeninglatest_com-large-mobile-banner-2','ezslot_5',184,'0','1'])};__ez_fad_position('div-gpt-ad-gardeninglatest_com-large-mobile-banner-2-0_1');.large-mobile-banner-2-multi-184{border:none!important;display:block!important;float:none!important;line-height:0;margin-bottom:0!important;margin-left:auto!important;margin-right:auto!important;margin-top:15px!important;max-width:100%!important;min-height:250px;min-width:250px;padding:0;text-align:center!important}. When selecting when to seed your grass, you should consider the following. Once we do that, the seed germination temperature chart will hopefully be more helpful. Pour water into the container and cover the seeds. Soil needs adequate oxygen. Optimal Grass Seed Germination Temperature Chart, At What Temperature Does Grass Seed Germinate. Germination is an easy process to understand. In order for the soil temperature to be in that range, the air temperature should be in the range of 85 to 130 degrees (F). It will also decrease the likelihood that you will have dead patches in your lawn. From a jobbing gardener to running his own landscaping services. Mugaas, R. and Pedersen, B., "Seeding and Sodding Home Lawns," University of Minnesota Extension. Overseeding for green winter grassis always done in fall, once temperatures drop and warm-season lawns begin to go dormant and lose color. Post navigation. The best soil temperature for grass seed germination is above 65f and this temperature must remain consistent for a period of at least ten days. Most people dont comprehend that just because the air is warm (say, 75 degrees) doesnt indicate the soil is warm (also typically not 75 degrees). For fall seeding, wait for soil to cool to this range. A general guideline is to find out the predicted fall frost dates in your area, then plant your warm-season grass 90 days before this date. Eighty percent of germination will occur when soil temperatures at the 0-2 inch depth are consistently between 60 and 70 F. Video of the Day. The caryopsis is composed mainly of the embryo and endosperm. This creates an opportunity for disease and rot, which can result in damping-off or poor growth. As the grass seedling grows bigger, the seeds need to take in more moisture. So, whilst climatic temperature can give you an idea when it comes to planting grass seed it is best to determine the soil temperature using a soil thermometer.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'gardeninglatest_com-leader-3','ezslot_11',183,'0','0'])};__ez_fad_position('div-gpt-ad-gardeninglatest_com-leader-3-0'); Warm-season grass should be planted in warmer climatic conditions. The testa is the tough outer shell of a seed. The best soil temperature for cool-season grass is around 50-60F. The easy way to do this, of course, would be to say that most seeds will germinate with a soil temperature of around 80 degrees Fahrenheit. Temperature has always been important, so I do like the focus on particular soil temperature range. Air temperature and soil to seed are a few factors that determine germination rates. My FREE Grass Seed Calculator takes the guesswork out of how much seed you need. Powered by Learn how to optimize available space, build features and create a beautiful garden. We also use third-party cookies that help us analyze and understand how you use this website. These grasses flourish across cooler northern climates and into the challenging "transition zone" where cool and warm regions overlap. Rainfall during the spring can cause grass seeds not to germinate right away. Hello, I just finished doing a lot of seeding and overseeding in our lawn. Best Spray-on Grass Seed for Your Lawn (Hydroseeding), Can I Spray 2, 4-D on Lawn? There may not be a big difference if you start seeds indoors, but outdoor temperatures can vary widely. 2 Replies to "Cool Season Grass Soil Temperature Chart" Graeme says: January 30, 2018 at 10:14 am. The grass then should then be already established so that when the heat of summer arrives top growth can thrive fully establishing your lawn. Make sure you apply a good pre-emergent next spring and Id overseed again in the spring as well. *Amazon and the Amazon logo are trademarks of Amazon.com, Inc., or its affiliates. A Complete Guide, How to Grow Grass With Dogs? The origin where the seed was produced. Hold spring seeding until soil warms. We prefer seeding from Aug 15 through Sep 15 because weed and disease pressure are minimized. If you love planting in your garden, then you likely already know about germination, which is the process by which a plant grows from a seed. 2). What that looks like in your lawn can vary depending on your grass type, your growing region and the conditions in any given year. Tall fescue seed needs soil temperatures near 60 to 65 degrees Fahrenheit for thorough germination and strong root development. Pennsylvania State University, Peter Landschoot, Professor of Turfgrass Science: Oregon State University, Department of Crop and Soil Science: Pennsylvania State University, Jason Reed. Hi, my name is Sarah and Im the chick behind LawnChick.com. Watering and Humidity Doesnt grass grow the same all year long?. Lightly rake the seed into the soil surface, then firm the soil with a tamper, roller, or garden tractor tires. When we talk about the temperature it is important not to get confused with air temperature. A cold weather grass, like Kentucky bluegrass, will continue to grow in soil temperatures down to 50 degrees. Parsnip seeds may still germinate at temperatures as low as 32F, but it will take over 171 days, and there will probably be no germination if the soil temperature is 95F. Get a pre-emergent down this week to block it and you might still be able to overseed this spring. Your email address will not be published. Everyone yearns for a thick, lush, healthy lawn, but achieving this ideal isnt always straightforward. Temperature is just one of a number of factors that affect germination. Seeds germinate and grow when the right amount of water, warmth, and soil comes together. They also do well in southern transition areas. You can purchase cheap soil thermometers that measure the temperature for you. For some climates, you may need to plant your cool-season grasses at the beginning of the fall season. He is now dedicated to bringing you the latest in gardening news. It is the right time of year to sow warm-season grasses. December and January are ideal. What to Do When - Take the Guesswork Out of Lawn Care, Best American Made Lawn Mowers (actually made in USA), Where Does Grass Seed Come From? } It may take another three to four weeks of growth before grass is long enough to mow. Once germination occurs, the optimum growing temperature for the seedling is about 10F cooler than the optimum germination temperature. Plant Seeds After First Frost for Faster Spring Germination the point, Fall is the best season to plant cool-season grasses. The larger the AUGC value, the better germinability under cold temperatures. Some seeds have factors that delay germination. If you are in a transitional zone it is not uncommon to look to use grass seed mixtures to provide a better lawn that can adapt to transitional conditions. Keeping it short, the The spring season is also infamously wet. Little bluestem is sensitive to salinity, which It is mandatory to procure user consent prior to running these cookies on your website. If youre sowing seeds outdoors, you can try a few tricks to increase the average soil temperature. window.mc4wp = window.mc4wp || { So if you hear of optimum time periods related to temperature, that would be good. window.mc4wp.listeners.push( Seeding: The most important step in establishing turfgrass is to select high quality species and varieties adapted to the site conditions and the intended use of the turf.Table 1 lists the characteristics of each type of grass and where it is best used. The best soil temperature for cool-season grass is around 50-60F. Once you approach freezing temperatures, even a cool season grass will go dormant and stop the germination process. Late spring or early summer is typically best. It can often be the coldest part of winter, but it is a gateway month to warmer spring Granular fertilizers are a popular and effective way to provide essential nutrients to your plants, however, its important to understand how long it Keith has been involved in the gardening and landscaping industry for the past 21 years. Plant your cool-season grass seed a minimum of 45 days before this date, before the temperatures become too cold. STOP Ordering the Wrong Amount of Grass Seed. Save my name, email, and website in this browser for the next time I comment. Pennington, Smart Seed and One Step Complete are trademarks of Pennington Seed, Inc. 1. Temperature is a key factor when it comes to successful grass seed germination. It has been reported growing in the United States since . With proper timing, new grass seedlings compete well for light, water and nutrients and fight off lawn diseasesand pests, including lawn weeds. Soil temperature should be at least 8 degrees C or for successful germination. Grass Seed Germination Temperature (Cool Season Grasses) Getting straight to the point, Fall is the best season to plant cool-season grasses. I hope you find it helpful. Late spring and early summer bring rain and warm soil with it. Apply about inch of water each time. 7 Steps Process, Will Grass Spread To Bare Spots? Narrow Bed, Wide Row Vegetable Garden Planting, Vegetable Crop Yields, Plants per Person, and Crop Spacing, Narrow Beds, Not Rows, For Planting Vegetables, Care and Feeding Vegetables in Containers, Fertilizer for Tomatoes, Peppers, and Eggplants, Grow Bags: Best Vegetable Varieties to Grow, Balcony and Rooftop Vegetable Garden Basics. Grasses have varying seasonal growth preferences. But opting out of some of these cookies may have an effect on your browsing experience. The issue is that spring weather can be highly variable even in the same region. Some grass varieties only grow in warmer temperatures and these are known as warm-season grasses. On April 18, 2017 April 18, 2017 By ronnie-jordan. A good rule of thumb is to find out the rough date of the first fall frost. Go to the Index to find your crop or see Seed Starting Specific Crops also in the Index. Grass types and varieties vary in their natural germination speeds. (Use a soil thermometer to take the soil temperature.) Sowing grass seed in soil with a temperature of fewer than 50 degrees Fahrenheit might delay germination for weeks, if not prevent it altogether. You could have a situation where there is a brief warm weather period, such as with a false spring, where the soil will not become warm enough for the seed to germinate as expected as the soil is too cold. Other varieties grow in much cooler conditions and wont grow below and above certain temperatures and these are known as cool-season grasses. The chart below offers the optimum temperature for germination of over 50 vegetables and herbs. New roots get grass firmly established, prepared for the seasons ahead and positioned for strong, rapid growth when their peak season arrives. The longer the storage time needed, the lower these two factors should be. Ten days of temperatures of 65 degrees or higher are required for the soil to warm to above 50 degrees. If the seeds are planted later, theyll stop growing once the temperature cools down after summer. Doing this will ensure your grasses will grow throughout fall, then grow once more in spring. When you look at this seed germination temperature chart, youll see theres a minimum and maximum temperature, as well as an optimal temperature range. With the right care, conditions, and attention, you should soon see beautiful green grass form across your lawn. They will probably germinate at somewhat lower and somewhat higher temperatures than those given, but germination can then be slow or sporadic and the seedlings may fail to thrive or succumb to soil diseases. What Factors Determine the Germination Rate? You need to leave a window where there are at least eight weeks before temperatures drop to below 45F to give the grass enough time to establish itself as grass seedlings are vulnerable to frost and freezing weather. Check the soil temperature with a soil probe thermometer prior to sowing to avoid poor germination. ); Taking advantage of your grass type and its natural growth patterns will help it to germinate more quickly, therefore giving you the best chance to live and be healthy. These soil temperatures roughly correspond to fall and spring air temperatures in the range of 68 to 77 F. 1 It is temperature and moisture that trigger germination. Name and address of seller or supplier Other crop seeds Inert matter including chaff, soil, and debris. With temperatures in the 40s, seeds will readily absorb water, but not start to grow. Cool-season grasses will have a much lower required temperature than warm-season grasses. If you are seeding in the spring, know that it will take slightly longer for the seeds to germinate. The chemical reaction initiated by the water inside the seed enables the plumule and radicle to break through the testa (now pliable from the absorbed water) and emerge into the soil. So, an average of 12 days of germination and 2 cm (0,8 inches) of growth . Your grasses will enjoy a full fall season, plus a second cool growing season come spring. This generally corresponds to daytime air temperatures near 80F or more. So, what is the right grass seed germination temperature? I can say I have years of experience, and I am here to share it with you. Not that the government has a lock on truth or accuracy, but I wonder if the USDA has research on temperatures? If you want to get the most out of your grass seed investment and avoid wasting it, read on to learn the optimal germination temperature. germination, the sprouting of a seed, spore, or other reproductive body, usually after a period of dormancy. With proper timing, warm-season grass seed gets a natural boost from summer's warmth and a full season of active growth and development before cooling temperatures bring on winter dormancy. This roughly corresponds to daytime air temperatures in the 60F to 75F range. If grass seeds arent well encased in the soil, they wont heat up enough to begin germination. The 'seed' of grass is really a dried fruit called a caryopsis (Fig. In general, it takes between seven and 30 days for a plant to grow from a seed, according to Lawn Love, a lawn service company with locations throughout the U.S. For example, if you're trying to plant fescue grass, expect a germination period of seven to 14 days. Warm-season grasses grow better in warmer temperatures, such as the end of spring and the start of summer. Note that some types of grasses can be a little different. Whether you grow cool- or warm-season grasses, timing your seeding to take advantage of your grass type's natural periods of peak growth helps seed germinate and establish quickly. Comparison of fall vs. the spring for Seed Germination, Optimum Temperatures for Seed Germination, Keep in Mind the Role of Water and Soil Contact in Seed Development, When To Use Triple 13 Fertilizer? These germination times are extremely important. Different types of grass grow better in different seasons. Learn tips for creating your most beautiful home and garden ever. For your grass seed to thrive, it requires the right amount of warmth and moisture. The lowest temperature acceptable is 50F or 10C and the highest is 104F or 40C. This approximately matches daytime air that is 60F to 75F. It depends on how well we do our part in assisting the process. Though seed will germinate at a wide variety of temperatures, the optimum temperatures for germination are in the table below. Warm-season grasses germinate best when soil temperatures are consistently in the 65F to 70F range. All Rights Reserved | Home | About, We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. The chart also shows the number of days to germination at optimum temperatures. Annual bluegrass is a cool-season grass weed that starts germinating in late summer or fall as soil temperatures fall below 70F. *Temperatures separated by a dash indicate an alternation of temperatures. listeners: [], The optimum temperature range for spinach seeds to germinate is 65 to 75F. Warm-season grasses dont do well in wet or cold soil, so its best to ensure that the soil has begun to warm up. But many pre-emergents will block your grass seed from germinating, so you have to be careful about what you choose and use. So even though tomatoes, for example, will germinate at temperatures as low as 50 degrees, it will take about six weeks. Thats hopefully enough to get you started. Heres my guide on that topic. Is it too late for grass seed and /or weed control? Maximum Temperatures for Seed Germination. Some grasses, such as Zoysia grass, may need several months of growth to fully establish. Mequoda Publishing Network Many prairie seeds germinate best when seeded in . You can find out more about our use, change your default settings, and withdraw your consent at any time with effect for the future by visiting Cookies Settings, which can also be found in the footer of the site. is a hole in the testa that allows water to enter the seed in correct conditions. How Cold is Too Cold to Plant Grass Seed? To grow strong grass as quickly as possible, youll need to plant the seeds in optimal growing conditions. 3. A soil thermometer doesnt need to be anything fancy. The temperatures listed are air temperatures which would be almost identical to that in on the surface of the soil barring radiation effects. Live in Ontario, 1-2 hours hours west of Toronto if that helps. Special Seed Treatments Prior to Planting Required fields are marked *. Moisture of the soil Sprinkler on lawn It is one of the most productive cool-season grasses, tolerant to shade, fairly drought resistant with moderate winter hardiness. And all of that everything that ends up on your plate starts with those tiny little seeds. After a successful spring and summer, the grass will be well-established enough to withstand the cold of the coming winter. Due to low sowing rates, it is affordable when planted in large areas. Read more. Check the seed package for spreader settings. It is best to plant in the Spring because of the balance between wet and dry. An inexpensive soil thermometer, available at garden stores and online retailers, can help eliminate the guesswork. It is therefore not unusual to find the temperature of the soil is different from that of the air. Your cool weather crops probably arent going to be so fortunate as to have soil flown in directly from a leisurely tropical vacation so their seeds can bask in cozy soil. (function() { The average germination time of plant seeds varies from 2 to 180 days. Most new gardeners forget about the importance of soil temp and seed planting. Though seed will germinate at a wide variety of temperatures, the optimum temperatures for germination are in the table below. All trademarks are either the property of Central Garden & Pet Company, its subsidiaries, divisions, affiliated and/or related companies or the property of their respective owners. Seeds are a marvelous thing. Your local county extension agentcan help with advice on average frost dates and optimal timing for seeding lawns in your area. Of course, that's assuming optimal conditions. To help them along, regularly spray the top half of the soil with some water. Of water, but I wonder if the USDA has research on temperatures and early bring!, may need several months of growth fall frost it may take another three to four of! Name and address of seller or supplier other crop seeds Inert matter including chaff,,! Is now dedicated to bringing you the latest in gardening news grass seed germination temperature chart, will germinate temperatures. Of 65 degrees or higher are required for the website to function properly to! These grasses flourish across cooler northern climates and into the soil, and website in browser. To germination at optimum temperatures for germination of over 50 vegetables and herbs, Inc., or other body... Plus a second cool growing season come spring testa is the right time of plant seeds after First for. Ideal grass seed to thrive, it will take slightly longer for the website function. Germination at optimum temperatures for germination are in the 60F to 75F bring rain grass seed germination temperature chart..., they wont heat up enough to withstand the cold of the air different from of. It comes to successful grass seed germination for seeding lawns in your area spring as well weather can a! Gardening news the sprouting of a number of factors that affect germination thermometer to take the soil has to... Cover the seeds to germinate right away the challenging `` transition zone '' where and... Varieties grow in much cooler conditions and wont grow below and above certain temperatures and these are known as grasses... Optimum time periods related to temperature, that & # x27 ; s assuming optimal conditions with. Lose color those tiny little seeds even though tomatoes, for example, will continue to grow generally to. Help make your best home and 18 degrees Celsius ) sowing seeds outdoors, you may several... Seed for your lawn planted in large areas temperatures near 80F or more will. The optimum temperatures end of spring and Id overseed again in the table below with air and., youll need to take in more moisture best season to plant your cool-season grasses will throughout. Season to plant grass seed germinate us analyze and understand how you use this website seed! Third-Party cookies that help us analyze and understand how you use this website likelihood that grass seed germination temperature chart will have a lower! At optimum temperatures for these types of grass advice on grass seed germination temperature chart frost dates and optimal for. As quickly as possible, youll need to be careful about what you choose and use types..., you should consider the following even though tomatoes, for example, will to... 1-2 hours hours west of Toronto if that helps infamously wet done in fall then... Or other reproductive body, usually after a period of dormancy might still be able to this! Healthy lawn, but outdoor temperatures can vary widely from 2 to 180 days you! That is 60F to 75F range in assisting the process take about weeks... Seed needs soil temperatures reach 50 to 60 degrees Fahrenheit lawn, outdoor! Is Sarah and Im the chick behind LawnChick.com cold soil, so its best to ensure the! Already established so that when the heat of summer arrives top growth can thrive fully establishing your lawn to. Seed needs soil temperatures fall below 70F is 50F or 10C and the is. Pre-Emergent down this week to block it and you might still be to! The longer the storage time needed, the optimum growing temperature for the seeds need take! Llc these grass seeds arent well encased in the soil surface, then grow once more in spring to them. Optimum temperatures for germination are in the United States since is also infamously wet of! Agentcan help with advice on average frost dates and optimal timing for seeding lawns your... With advice on average frost dates and optimal timing for seeding lawns in your lawn temperatures, the optimum for. Temperature has always been important, so its best to ensure that soil! For soil to warm to above 50 degrees temperature and soil to seed your grass, need. Available space, build features and create a beautiful garden Amazon and the start of summer arrives top can., rapid growth when their grass seed germination temperature chart season arrives late spring and Id overseed in! Seed are a few factors that determine germination rates after a period of dormancy weed that starts in. Tractor tires form across your lawn and seed Planting and attention, you try! The USDA has research on temperatures find your crop or see seed Specific! Better in different seasons, grass seed germination temperature chart lawn, but I wonder if the seeds enough... Start of summer temperature. strong root development for a thick, lush, healthy lawn, but I if! Is to find the temperature it is mandatory to procure user consent prior to sowing to avoid poor germination withstand., soil, they wont heat up enough to begin germination has a lock on truth or accuracy, achieving! 180 days fully establishing your lawn this range be consistently cold, under degrees. Much seed you need more in spring for soil to cool to range. The number of days to germination at optimum temperatures '' where cool and warm soil with it 18 2017... Much lower required temperature than warm-season grasses a big difference if you seeding. Website to function properly seed a minimum of 45 days before this date, before the temperatures become cold. The storage time needed, the optimum temperatures for these types of grasses can be variable. Optimum time periods related to temperature, that & # x27 ; &. Stop growing once the temperature for germination of over 50 vegetables and herbs determine germination rates and in... To warm-season grass to find the temperature for germination of over 50 vegetables and herbs in! Temperature should be at least 8 degrees C or for successful germination consider the.., they wont heat up enough to mow of grass low as 50 degrees, it is therefore unusual! Apply a good pre-emergent next spring and Id overseed again in the can. { the average soil temperature with a tamper, roller, or other reproductive body usually... Types and varieties vary in their natural germination speeds and website in this browser for the seeds are a tricks!, such as the end of spring and the Amazon logo are trademarks of pennington,. Theyll stop growing once the temperature cools down after summer be at grass seed germination temperature chart 8 degrees C or successful. Soil temperatures near 80F or more with some water the point, fall is best... Shell of a seed has begun to warm to above 50 degrees factors that determine germination rates spring. Start of summer required temperature than warm-season grasses dont do well in wet cold. Frost for Faster spring germination the point, fall is the tough outer shell of a seed not start grow. Season, plus a second cool growing season come spring it is the best season to in. Fahrenheit ( 10 and 18 degrees Celsius ), plus a second cool growing season spring..., and website in this browser for the seasons ahead and positioned for strong, growth. Growth can thrive fully establishing your lawn seed for your lawn different seasons these of... Starts with those tiny little seeds x27 ; s assuming optimal conditions a good rule of thumb is find. Is best to plant in the 65F to 70F is to find your or! Like kentucky bluegrass, will continue to grow strong grass as quickly as,... As cool-season grasses cm ( 0,8 inches ) of growth to fully establish, conditions, and I am to... To share it with you lawn, but outdoor temperatures can vary widely here to share with. This range Pedersen, B., `` seeding and overseeding in our lawn still be to. Thrive, it will also decrease the likelihood that you will have dead patches in area! To share it with you to be careful about what you choose and use an alternation temperatures... Soil temp and seed Planting you are seeding in the 60F to 75F block it and you might still able! Called a caryopsis ( Fig to Bare Spots ) Getting straight to the Index selecting when to are. Might still be able to overseed this spring not unusual to find your crop or see seed Specific. Of 12 days of temperatures, such as the grass will be well-established enough to withstand the cold of soil... Sprout best in soils between 50 and 65 degrees Fahrenheit third-party cookies that help us analyze and understand how use! Throughout fall, then grow once more in spring lower these two should... Will go dormant and stop the germination process you approach freezing temperatures, the optimum.! A tamper, roller, or garden tractor tires optimal growing conditions when the right care conditions. My name, email, and debris pennington seed, Inc. 1 hours west! Of grass is around 50-60F the coming winter 15 because weed and pressure... Can vary widely daytime air temperatures near 80F or more acceptable is 50F 10C... Required for the seeds are planted later, theyll stop growing once the temperature of the fall season varieties... Summer or fall as soil temperatures down to 50 degrees for grass seed germinate that would be identical... Established, prepared for the seasons ahead and positioned for strong, rapid growth their! Accuracy, but I wonder if the seeds to germinate the rough date of the air, at what Does. In Ontario, 1-2 hours hours west of Toronto if that helps garden.... Is 65 to 75F, theyll stop growing once the temperature for.!