Which types of plants often need greenhouse conditions in temperate climates?

In temperate climates, plants that require greenhouse conditions are typically those that are frost-tender or native to tropical and subtropical regions, as they cannot survive the freezing temperatures of the local environment. Greenhouses provide a controlled environment where temperature, light, and humidity can be regulated to meet the specific needs of these plants.12

Plants often grown in greenhouses in temperate regions include:

• Tropical and Subtropical Plants: Many species native to warm, frost-free areas—such as orchids, ferns, palms, philodendrons, gardenias, and bougainvilleas—require the higher temperatures of a warm greenhouse or hothouse to thrive.21
• Succulents and Cacti: These plants are often suited to the intermediate temperatures provided by a warm greenhouse.2
• Flowering Ornamentals: Various plants, including azaleas, African violets, begonias, geraniums, and poinsettias, are frequently cultivated in greenhouses to ensure successful flowering.23
• Out-of-Season Crops: Commercial growers in temperate zones use greenhouses to produce warm-weather vegetables, such as tomatoes, that would otherwise not survive the local climate.2