The purpose of a greenhouse is to have a place where plants can be started and kept in a warmer climate than nature provides. To accomplish this, some type of heating unit may be needed, especially in areas that experience a prolonged winter.
Operable windows may provide enough ventilation for some backyard greenhouses, but larger-scale greenhouses may need vents and fans to keep the air quality and plants healthy.
Plants in your greenhouse will need to be watered regularly. An article published by greenhousecatalog.com recommends using an adjustable telescopic watering wand to reach plants in high places. The article also recommends attaching the wand to a 30-foot coiled hose for easy use.
Depending on the hours of daily light nature provides in your area and the needs of the plants you are cultivating, one or more grow lights might be needed in your greenhouse.
Specialized cleaning supplies that will keep mold and other contaminants off of the surfaces of your greenhouse without harming plants will be needed. Basic cleaning supplies such as brooms, rags and brushes are also necessary.
Some greenhouses are designed to plant seedling directly in the ground, some are strictly for container gardening and some are a combination of both. If your greenhouse is designed for using containers, you will need a supply of plastic nursery-style pots, clay pots or plantable pots made from peat.
For greenhouses that utilize container gardening, lightweight, washable tables will provide more space and eliminate the need to bend over to tend your plants.