When should I plant grass seed in San Diego
William Harris
Updated on March 25, 2026
OVERSEED IF DESIRED Here in California it is common practice to overseed in the fall for winter-dormant grasses such as Bermuda and St. Augustine with ryegrass. It is always best to overseed when daytime highs range from 78° to 83° and nighttime lows are 55° or colder, typically between mid-October and mid-November.
When should I reseed my lawn in San Diego?
OVERSEED IF DESIRED Here in California it is common practice to overseed in the fall for winter-dormant grasses such as Bermuda and St. Augustine with ryegrass. It is always best to overseed when daytime highs range from 78° to 83° and nighttime lows are 55° or colder, typically between mid-October and mid-November.
Can I plant grass seed in early June?
Typical seasons to grow new grass are in the early fall and spring when temperatures remain mild, but it is possible to establish a lawn during the heat of summer. Planting grass by seed or sod in June or July requires some extra care to ensure that the seedlings have enough moisture for healthy growth.
What is the best time to plant grass seed in Southern California?
Cold-activated Fescue grass, a popular choice in Southern California, is well suited to the dry, temperate climate and stays green year round. The species spreads its roots rapidly in cooler weather, which makes early spring and late fall ideal for planting. In addition to cool weather, this grass needs quality soil.Is April a good month to plant grass seed?
If you have your heart set on planting grass in spring, early April is, in fact, the best time to do it. But, depending on where you live, spring seeding could come with complications.
When should I plant grass seed in California?
The best time to plant a new lawn from seed in our region of Northern California is late summer to early fall. At that The ground is still warm and makes a great incubator for quick germination. You’ll also be giving your new grass a long cool season to become established before the ground warms up again.
When can you overseed Bermuda in California?
Seeding and Overseeding Thin Lawns The best time to plant Bermudagrass is late spring and early summer, after soil warms and spring frost danger has passed. Bermudagrass germinates best at soil temperatures between 65°F and 70°F. Most garden retailers offer inexpensive soil thermometers to help you get timing right.
When should I plant grass seed in the spring?
Aim to seed early in the season, but wait until daytime temperatures are in the 60 to 75 degree Fahrenheit range. This roughly corresponds to the optimal soil temperatures for cool-season grass seed germination. Spring sunshine and rain both contribute to strong grass growth.What happens if I plant grass seed too early?
Grass seed needs the correct soil and air temperature, as well as moisture content, to sprout. Planting it too early in the spring can result in less-than-ideal germination, because the seeds can die off or become unproductive.
Is November a good time to plant grass seed?While planting grass seed in November is too late to make the fall growing season, there is a method called dormant seeding. Through dormant seeding, grass seed can be planted in November when the weather is cold enough to keep it dormant until the weather warms up in the spring.
Article first time published onCan you plant grass seed in May?
In many cases, planting grass seed in summer is not preferable, considering that many popular grasses are warm-season grasses. For these types, planting grass seed in May or around May is the last opportunity. However, there are many types of cool-season grasses that can be grown after the middle of May.
What temperature can I plant grass seed?
Grass seeds germinate based on the temperature of the soil surrounding them. Cool-season grass seed germinates when soil temperatures are in the range of 50–65℉ (10–18℃). Warm-season grass seed grows strongly in soil temperatures of 65–70℉ (18–21℃).
How do you plant grass seed in the spring?
- Put half the grass seeds in a drop or broadcast spreader. …
- Turn the rake so the tines are facing up. …
- Cover the ground with a thin layer of mulch made from wheat straw, if your lawn is uneven and prone to erosion. …
- Water the lawn lightly each day until the grass is 2 inches tall.
Can I plant grass seed in March?
Is March too early to plant grass seed? In nearly all regions, March is too early to plant grass seed. Temperature is a better barometer; wait until days average about 80 degrees before planting grass seed for summer. March is too late to sow cool-season grasses.
Should I soak grass seed before planting?
Place the grass seed in a porous material. … Soak the seed in water for 3 to 5 days. Bluegrass should be soaked for 5 days. Make sure all seed is wetted.
Why is Bermuda grass so expensive?
Grass seed is expensive because the cost of producing grass seed is high. Producing different types of grass seed requires varying amounts of labor, machinery and space. All of these factors cost money which brings up the cost of the seed.
Which grass is better Bermuda or St Augustine?
Bermuda grass does well in zones 7, 8, 9 and 10, while St. Augustine grass really only performs well in zones 8 through 10. So, if you live along the Gulf Coast or warm coastal areas of the country, St. Augustine grass is a better choice.
Which grass seed is best for Southern California?
- Buffalo Grass Seed. Buffalo grass is an excellent choice for Southern California’s climate. …
- Zoysia Grass Seed. Zoysia grass is another excellent choice for Southern California’s climate because it is very drought tolerant. …
- 3 . Bermuda Grass Seed. …
- 4 . St Augustine Grass Seed.
Is it too late to plant grass seed?
Although September is the best time, often we can still plant grass seed up to October 15 with good results. The problem with late season seeding is that Mother Nature is working against us. Shorter days and cooler temperatures prolong the germination of the seed and its establishment.
Should I put topsoil over grass seed?
You don’t need to turn the topsoil over. Just break it up so the new grass seeds’ roots can easily grow through. If you just have a small area to seed, a digging fork will do the trick. For larger areas, consider a core aerator.
Will frost stop grass seed from germinating?
The easy answer is that frost will not kill grass seed, but that does not mean that you should plant grass seeds when there is danger of frost. While the seeds will survive until the next growing season, any seeds that sprout into seedlings will not.
What temperature is too cold for grass seed?
If you’re wondering how cold is too cold for grass seed germination use our rule of thumb and check the weather reports. If the daytime temperature is below 60°F then soil temperature is below 50°F, making it too cold; if there is frost or still a danger of frost, then it’s too cold.
Can I seed my lawn in the spring?
Fall is the best time to introduce new seed into an existing lawn of cool-season grasses. But, depending on your grass type, overseeding in spring can yield good results, too, if it’s done early enough in the spring to give seedlings enough time to mature before the onset of the summer heat.
Can I plant grass seed in December?
Grass seed can survive the winter, and planting during the winter season is known as dormant seeding. If you put down grass seed in November or December, the seed will just lay dormant until the soil starts to warm in spring. While this comes with risks, it can also be beneficial and save you time on seeding in spring.
Can I just throw grass seed down on existing lawn?
Overseeding. Sowing new grass seed over your existing lawn is known as overseeding. … While it’s possible to simply sow the new grass seed over your existing lawn, taking the time to prepare your lawn beforehand will increase the likelihood of seed germination and improve your end result.
Can you plant grass seed in December in California?
WHEN TO PLANT Northern California’s low- to mid-elevation climates allow for seeding a lawn at any time of the year yet the best times are fall and spring. In winter, establishment takes longer because of the colder temperatures which can encourage the growth of cool-season weeds.
What's the earliest you can plant grass seed?
As a general rule, warm-season grasses planted at least 90 days before the first fall frost have time to establish well before winter. These summer-loving grasses go dormant once temperatures drop near 55°F, so late-planted seedlings can’t prepare for what’s ahead.
Is it OK to overseed in the spring?
There are two ideal times of the year to overseed your lawn – fall and spring. Fall is the best choice. … Also, weed growth tapers off after summer, so your new grass won’t have to compete for sunshine, water, and nutrients. Overseeding in spring is the next-best option.