A greenhouse is beneficial for the avid gardener, especially if you live in a location where the climate or seasonal conditions prevent you from doing what you love. Greenhouse plants are seasonal as well as year-round, depending on your region and the types of plants you choose. Since the primary purpose of a greenhouse is to protect plants from freezing temperatures, most of them tend to be tropical varieties.
Ferns are a tropical plant that thrives in humidity and low-light since they are from the jungle (where they grow under thick trees). In a greenhouse, they are best grown on humidity trays and should be misted regularly. They add a sense of texture, bright color and larger plant variety to a greenhouse. Common fern varieties in greenhouses include Maidenhair, Staghorn and Boston.
Orchids are so temperamental that a greenhouse is almost the only surefire way to make the plant thrive. Ideally they should be planted in humidity trays. As the largest family of flowering plants, the largest and most colorful flourish in tropical humid regions. This variety grows all over the world in several sub varieties. One of the most popular varieties for a greenhouse includes the Cattleya orchid.
Begonias add a splash of color and texture to a greenhouse, ranging from large to small waxy or hairy leaves. They thrive in humidity and are native to Central and South America, southern Asia and Africa. Begonias thrive in shady areas, where they can be grown year-round (except for the tuberous variety).