Heating a Greenhouse in Cool Climate Australia: Options and Costs

Do You Need to Heat?Many Australian gardeners assume that heating a greenhouse is expensive and difficult — but the requirements for most productive purposes are modest. The goal for most cool-climate Australian greenhouses is not tropical conditions — it is simply frost protection (keeping minimum temperatures above 2°C) and enough warmth to germinate seeds and maintain minimal growth through winter. For this modest goal, very low heat inputs are required.Passive Solar HeatingA well-design…