Tenax Wall Thermometer

Wall Hanging Type Polytunnel & Greenhouse Thermometer

A wall thermometer is an invaluable tool for the greenhouse or polytunnel. 

Most greenhouse plants like a temperature of about 28º, anything over 30º can slow down growth cause damage to many plants. When the your greenhouse or polytunnel gets too hot make sure you have adequate ventilation.

Too hot or too cold? How do you know without a good polytunnel or greenhouse thermometer? That is why it is a cheap, simple but essential bit of kit that all gardeners big or small should have.