For foundation plantings and turf, what is the recommended spray pressure range?

For foundation plantings and turf, what is the recommended spray pressure range?

• A. 400-500 psi at 6-10 gpm.
• B. 100-200 psi at 2-4 gpm.
• C. 600-700 psi at 12-15 gpm.
• D. 50-100 psi at 1-2 gpm.

Answer: (A)

Spray pressure and flow determine how well the spray covers foliage and penetrates dense turf. For foundation plantings and turf, using a boom sprayer with enough pressure to produce proper droplet size and a reasonable flow rate is key to getting uniform coverage without wasting product or causing drift. The 400-500 psi range with 6-10 gpm hits that balance: it provides the velocity and droplet size needed to reach leaves and stems across a landscape bed and through turf, while still allowing efficient coverage on typical landscapes. Options that are too low in pressure or flow won’t give even coverage and can leave areas under-treated, while those that are too high in pressure and flow increase the risk of very fine droplets that drift away and wear out equipment. A range like 600-700 psi at 12-15 gpm would create excessive drift and equipment wear, and 50-100 psi at 1-2 gpm is often insufficient for practical, uniform coverage on these areas.

Spray pressure and flow determine how well the spray covers foliage and penetrates dense turf. For foundation plantings and turf, using a boom sprayer with enough pressure to produce proper droplet size and a reasonable flow rate is key to getting uniform coverage without wasting product or causing drift. The 400-500 psi range with 6-10 gpm hits that balance: it provides the velocity and droplet size needed to reach leaves and stems across a landscape bed and through turf, while still allowing efficient coverage on typical landscapes.

Options that are too low in pressure or flow won’t give even coverage and can leave areas under-treated, while those that are too high in pressure and flow increase the risk of very fine droplets that drift away and wear out equipment. A range like 600-700 psi at 12-15 gpm would create excessive drift and equipment wear, and 50-100 psi at 1-2 gpm is often insufficient for practical, uniform coverage on these areas.