Questions

I have a polytunnell 25' x 14' approx with one entrance door. Plants tend to wilt from the heat on warm days even though the door is left open. Do I need a second opening at the opposite end of the polytunnell for air to circulate or can I do anything else to remedy this problem. Plants are watered every evening after sun down.

I have planted laurel hedging on the boundaries of my site ranging in height at present from 3 ft to 5 ft. I now wish to prune this hedging and wonder when is the best time to prune and what is the best way to prune the hedging.