🏠 Greenhouse — Questions & Answers
3 answered questions in this section, written and reviewed by the PlantSavvyWorld editorial team. Last reviewed 2026-09-06.
What is the most cost-effective way to heat a small greenhouse in winter?
The cheapest heating is the heat you do not lose, so insulation comes before any heater. Bubble polythene lining the inside of the frame typically cuts heat loss by around forty per cen…
Read the full answer →How do I keep humidity down enough to avoid botrytis in a closed winter greenhouse?
Botrytis needs three things: high humidity, still air and dead or damaged tissue to colonise. Removing any one of them substantially reduces the problem, and in winter the practical lev…
Read the full answer →Do water barrels for passive solar heat storage actually work in a greenhouse?
They do, within limits worth being clear about. Water has an unusually high specific heat capacity — around 4.2 kilojoules per kilogram per degree — so a given volume stores far more he…
Read the full answer →Other sections
30 answered questions across the library. Suggest a question you would like covered.