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Lawn Seeding Temperature

Planting the wrong seed variety of grass in the wrong temperature can result in a short-lived lawn. With all of the work and expense that goes into seeding a lawn, matching the seed to climate is the first critical element to having a properly seeded lawn. Temperature also plays a part in when to plant. Germination will not occur if the seed variety is not matched to the proper temperature during planting.
  1. Cool Season Grasses

    • As the name indicates, cool season grasses thrive in cooler temperatures where the days are shorter. Kentucky bluegrass is a popular variety gown in much of the U.S. It prefers full sun, but is susceptible to lack of water and poor soil. Hard fescue thrives in shade and poor soil. It is not tolerant to high summer temperatures.

    Warm Season Grasses

    • Warm season grasses are adapted to full sun and high temperatures. Bermudagrass is a turf grass that prefers warm temperatures. It will turn brown during extended periods of low temperatures. Zoysiagrass is perfect for full sun. It is very drought tolerant and has few pest problems. As its name indicates, seashore paspalum grows well near the ocean and has desirable turf characteristics.

    Proper Planting Temperature

    • To prevent death of seedlings and to enhance germination, seed a lawn at the recommended temperature. For cool season grasses, plant when temperatures reach 60 to 75 degrees during the day. For warm season grasses, plant when temperatures reach a minimum of 80 degrees during the day. Avoid planting in the fall if there is less than 60 days before the first freeze. Planting late will result in freezing seedlings.

    Tips for Seeding a Lawn

    • Properly prepare the area by removing weeds, rocks and remnants of an old lawn. Using a starter fertilizer helps to stimulate germination and growth. Use a rotary spreader to apply seed to ensure an even application. Rake in seed and apply a very thin layer of weedless hay to help retain moisture. Water three times a day for short intervals until seed sprouts. Avoid runoff to prevent redistributing seeds and creating patches of no growth.