Section 1
Three weights, three uses
Light (0.5 oz/sq yd) is purely insect exclusion — flea beetles on eggplant, cabbage moth on brassicas. Medium (0.9 oz) gets you 4°F of frost protection. Heavy (1.5 oz) gets 6–8°F but blocks ~30% of light, so use only during cold snaps.
Section 2
How to deploy
Drape directly on the crop or hold up with low hoops. Edges need to seal — bury with soil, weight with sand bags, or pin with landscape staples. A loose edge negates the benefit.
Section 3
When to pull it
For frost protection: pull at sunrise so plants don't cook. For insect exclusion on flowering crops (squash, cucumbers, eggplant): pull at first flower so pollinators can get in.
Section 4
Reusability
Quality row cover lasts 3–4 seasons if rolled and stored dry. Buy by the 250-foot roll for the best price; 7 feet wide covers a single 4-foot bed with edge to bury.
