Blackout Poly Film White/Black, 40'x100' Homesteading The frequency of replacement depends

The frequency of replacement depends on the level of exposure and the specific chemicals used

when plants have shed their leaves

this repellent eliminates the need for batteries or external power

For best results

Blackout Poly Film White/Black, 40'x100' Homesteading The frequency of replacement dependsSpecially formulated to block UV rays with special Agri Poly resin blend. The film provides maximum light blockage to control photo period of special plants such as orchids, tropical plants and flowers. Create the perfect growing conditions for flower bud production. Can also use the product as a reflective ground cover to increase light transmittance to greenhouse grown plants and weed suppression. Multi layers resist tears as well as pinholes White