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This depends on the type of grass seed, as some types do better in different environmental conditions. Cool-season grasses go dormant during the summer months when the soil temperature exceeds 65 degrees Fahrenheit. Once exposed to regular doses of heat, the germination rates decline, with seedling death not far behind. 

As for warm-season seeds, they come from tropical parts of the world and thrive in heat. They actively grow in warm air temperatures between 70 and 90 degrees Fahrenheit, and they prefer soil temperatures between 65 and 70 degrees Fahrenheit. Once temperatures dip and frost rolls in, if you don’t store them properly, warm-season grass seeds will die quickly.

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.

It’s best to fix lawn depressions during late spring. You want to wait until after your last frost date and when the yard is not too wet. This also allows ample time for new grass growth once you reseed.

Choosing between sod and seed depends on your budget, timeline, and maintenance preferences.

Sod:

• Pros: Provides an instant, lush lawn and immediate curb appeal. It's more resistant to weeds and erosion, can be installed any time during the growing season, and offers a consistent appearance.

• Cons: Has a higher upfront cost, typically $0.90 to $1.80 more per square foot than seed. It offers fewer grass varieties and must be installed immediately upon delivery.

Seed:

• Pros: Less expensive upfront, making it a budget-friendly option. It offers a wider variety of grass types and is easier for a DIY installation.

• Cons: Takes much longer to establish, potentially up to two years for a full lawn. It requires more maintenance, including regular weed control, and is more difficult to cultivate.

Ultimately, if you want a beautiful lawn quickly and have a larger budget, sod is an excellent choice. If you are patient, want to save money, and prefer a wider selection of grass types, seeding may be the better option.