Plastic greenhouses: High quality plastic polycarbonate glass greenhouses available to buy online with Free UK Delivery, perfect for beginners or for safety around children - grow your fruit and vegetables at home! Lower cost than a glass greenhouse. Large doorways for easy access to the plastic greenhouse. Plastic greenhouses with high tech equipment, built with precision and care, with wide options with generous dimensions, and smaller mini greenhouses to take up less space. A huge advantage of our plastic greenhouses is that they are from leading manufacturers who will be around for years, and you can customise many options, including base, glazing, and assembly. There's lots of plants you can grow in a plastic greenhouse, including fruits like Strawberries, and vegetables or herbs like basil and mint. Choose from many different sized plastic greenhouses below.