MOW LOW - The ryegrass will sprout more readily if it is in close contact with the soil. Before you spread seed, mow the bermudagrass lawn low (one to one and one half inches high) or run a motorized aerator over the lawn.
SEED & FEED - Use 5 to 10 pounds of annual ryegrass seed per 1000 square feet of lawn. Using more seed will give you a green color sooner – but you’ll have a hard time getting rid of all that rye next summer when you want the bermudagrass to take over. At seeding, spread starter fertilizer on the lawn. Early next February, spread lawn fertilizer on the grass. This will feed the rye without unduly stimulating the bermudagrass while it is trying to remain dormant in the winter.
LOWER IN THE SPRING - Ryegrass is kept mowed two to three inches tall during the winter. A few weeks before the last frost of the spring, mow the rye/bermuda down to one inch. This will shock the ryegrass while allowing the bermudagrass to begin greening up. Wait until the bermudagrass has become at least 50 percent green (usually in early May) before you begin fertilizing it with lawn food.