Bluegrass, annual can produce seed heads when mowed at which height?

Bluegrass, annual can produce seed heads when mowed at which height?

• A. 1 inch
• B. 3/16 inch
• C. 1/4 inch
• D. 1/2 inch

Answer: (B)

Annual bluegrass tends to bolt and form seed heads when it is kept at an ultra-low mowing height. Mowing at 3/16 inch is extremely short, which signals the plant to switch into reproductive growth to ensure its survival, so seed heads commonly appear. The other listed heights are not as extreme, so they’re less likely to trigger that seed-producing response. This is why very low cuts promote seed head formation in annual bluegrass; raising the mowing height helps suppress that tendency and keep the turf denser and more uniform.

Annual bluegrass tends to bolt and form seed heads when it is kept at an ultra-low mowing height. Mowing at 3/16 inch is extremely short, which signals the plant to switch into reproductive growth to ensure its survival, so seed heads commonly appear. The other listed heights are not as extreme, so they’re less likely to trigger that seed-producing response. This is why very low cuts promote seed head formation in annual bluegrass; raising the mowing height helps suppress that tendency and keep the turf denser and more uniform.