Windmill Grass is most likely to infest lawns started with what?

Windmill Grass is most likely to infest lawns started with what?

• A. Pasture sod or topsoil
• B. Newly laid sod on pure sand
• C. Irrigated lawn mix
• D. Seeding with fescue only

Answer: (A)

Windmill grass is most commonly carried into new lawns through the soil or sod that already contains the weed. The material you start a lawn with is a major source of weed seeds and propagules, and windmill grass is a weed that tends to come along with pastures and the topsoil used from those areas. So starting a lawn with pasture sod or topsoil means you’re bringing in the weed along with the material, making infestation far more likely. Starting with pure sand doesn’t bring in weed seeds, and although it isn’t ideal for establishing a good lawn, it reduces the chance of windmill grass taking hold. An irrigated lawn mix or seed with fescue can still be contaminated if the seed or mix isn’t clean, but the primary risk factor is contaminated soil or sod, which is why pasture sod or topsoil is the best answer.

Windmill grass is most commonly carried into new lawns through the soil or sod that already contains the weed. The material you start a lawn with is a major source of weed seeds and propagules, and windmill grass is a weed that tends to come along with pastures and the topsoil used from those areas. So starting a lawn with pasture sod or topsoil means you’re bringing in the weed along with the material, making infestation far more likely.

Starting with pure sand doesn’t bring in weed seeds, and although it isn’t ideal for establishing a good lawn, it reduces the chance of windmill grass taking hold. An irrigated lawn mix or seed with fescue can still be contaminated if the seed or mix isn’t clean, but the primary risk factor is contaminated soil or sod, which is why pasture sod or topsoil is the best answer.