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How to Maintain a Greenhouse

By Samantha Hanly ; Updated September 21, 2017

Every fall, gardeners pull up their sleeves and perform maintenance on their greenhouses. This is the perfect time of year to check the condition of the structure, the insulation, and make any needed repairs. Disinfecting and debugging the greenhouse ensures a clean, healthy start in spring.

Choose a dry day in autumn and take everything out of the greenhouse. Wash the inside walls with a mild, biodegradable detergent and warm water. Remove any debris, such as dead leaves or plant markers. Check the floor of the greenhouse to see if you need to replenish pea stones or other ground coverings.

Insulate the greenhouse. Recaulk any areas on the frame where you can feel a draft. Check and replace the foam insulation around the doors and windows as needed.

Wash the benches and shelves with warm, soapy water. Wipe down the outside of plant pots. Before returning the plants to the greenhouse, prune all dead leaves. Water the plants and return them to the greenhouse shelves.

If you use a greenhouse heater, autumn is the time to make sure it is clean and in proper operating condition. If the heater is electric, check the cords and connections. Do not use a heater with a cracked cord or exposed wire. For kerosene heaters, make sure they are clean and running without smoke. Check your fuel supply so you don't run out unexpectedly during the winter.

Clean your tools. Store them in a box in a separate shed or garage.


About the Author


Samantha Hanly is an organic vegetable gardener, greenhouse gardener and home canner. She grows a substantial portion of her family's food every year. After receiving her bachelor's degree, Hanly embarked on a career teaching dramatic arts, arts and crafts, and languages. She became a professional writer in 2000, writing curricula for use in classrooms and libraries.