Answer: I think once you start greenhouse growing, you'll never want to stop! I started with a small greenhouse (8-10') and graduated up every few years. I now manage a commercial greenhouse! Greenhouse growing is contagious! Just to get you started, here are some of the plants produced for sale during the calendar year:
January - spring bulbs, azalea, primula, cineraria, calceolaria, cyclamen
February - roses, spring bulbs, oxalis, cineraria, calceolaria, primula, cyclamen, azalea, lilies
March - hydrangea, kalanchoe, cineraria, calceolaria, primula, cyclamen, azalea, lilies, bedding plants
April - spring bulbs, azalea, lilies, gloxinia, heimalis begonia, bedding plants, flowering baskets
May - hydrangea, azalea, kalanchoe, lilies, gloxinia, potted roses, late flowering bulbs, geranium, new guinea impatiens, bedding plants, flowering baskets
June - gloxinia, heimalis, begonia, foliage, hibiscus, gerbera, potted bedding plants
July - gerbera, gloxinia, streptocarpus, heimalis begonia
August - hibiscus, azalea, heimalis begonia, foliage plants, field chrysanthemum
September - foliage plants, gloxinia, azalea, hibiscus, ornamental pepper, field chrysanthemum
October - hibiscus, foliage, flowering cabbage, flowering kale, cyclamen
November - poinsettia, cyclamen, Christmas cactus
December - poinsettia, Christmas cactus, cyclamen, heimalis begonia
Obviously, if they're in bloom, they'll sell very well. You'll need to start your plants this summer for sale in the fall and winter.
Once you've decided on a crop for your greenhouse, do a websearch and I'll bet you'll find growing information tailor-made for growing in a greenhouse.
Best wishes with your new hobby!
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