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The best time to plant grass seed depends on your local climate and whether you have cool-season or warm-season grass.

For cool-season grasses (like tall fescue), the ideal time to seed is late summer or early fall (typically August and September). During this period, the soil is still warm from the summer, but the air is cooler, creating optimal conditions for germination and root establishment before winter. There is also less competition from weeds. Spring is a secondary option, but cooler soil temperatures, the risk of a late frost, and less time for the grass to mature before summer heat can make it less successful.

For warm-season grasses (like St. Augustine), the best time to plant is from late spring through mid-summer (typically May and June), when temperatures are consistently between 75 and 90 degrees Fahrenheit.

In general, it is best to avoid seeding during winter or early spring, as cold soil and air can prevent seeds from germinating. For recommendations tailored to your specific grass type and climate, consider consulting a local lawn care professional.

Yes, Bahia grass spreads on its own thanks to its short stolon system. However, it might not seem like your Bahia grass spreads well due to its slow growth. Bahia grass takes around 3 to 4 weeks to germinate and an additional two weeks to grow thicker. 

During this time, fast-growing, competitive weeds may pop up, so weed your lawn to give your Bahia grass a chance to grow. This grass can take up to two years to become established. Once established, Bahia grass typically does well in suitable climates.

Due to its slow growth, Bahia grass does not generally take over weeds. In fact, the opposite can be true. Young Bahia grass is susceptible to being taken over by weeds. 

Likewise, in the cool season, Bahia grass goes into a dormant state that can allow weeds that thrive in early spring to get the upper hand. If you want to prevent weeds from taking over your yard, remove them by hand or apply a Bahia grass-friendly pre-emergent herbicide to your lawn before weeds have a chance to appear.

Soaking grass seeds in water before seeding is called pre-germinating. It’s not necessary but can be very helpful in some cases. Some grasses like are very slow to germinate, and basic seeding on the ground is unlikely to be effective—that’s especially true of cool season grasses like Kentucky bluegrass, rye grasses, and Bermuda grass. Soaking these seeds in a bag or bin of water for one to four days beforehand can give the grass the start it needs to survive.