![]() This can be facilitated by various materials, but they must be non-corrosive and strong enough to support the necessary weight without bowing or sagging. Generally, it is best for the tops of benches where plants are placed to be as open as possible to allow for air and excess water to pass freely through the bench top. Another option is to place underground areas in walkways if covers are made strong enough to support walking on them. If these areas are to be covered with growing benches, the benches should include wheels so that they can easily be moved for access to underground areas. Underground spaces can be lined with bricks and covered with strong plywood. Some growers also like to use some underground space for producing compost, supply storage, or in the case of hydroponics, underground reservoir placement. For many greenhouse plants, growing on benches may be best to use vertical space efficiently and reduce the problems of growing on the ground which include disease, insects and rot. An indoor tree can add to the aesthetics of a multipurpose greenhouse, and it may be best to leave ground space open so that the tree can have adequate root space. Growing plants on the ground does not require benches and may be appropriate for some greenhouse plants. Regardless of the materials chosen for bench construction, a good rule of thumb is to allow support for at least 25 pounds per square foot area. It is best to start with strong benches, so they are suitable for most applications. Flats are light, but large five-gallon containers can be quite heavy and hydroponics systems may be even heavier. Is the greenhouse primarily used for sowing seeds in large flats and starting plants to be transplanted to outside gardens, or will it be used for production of food crops for the family or selling? Will the floor be left open for some direct ground growing or will all plants be grown in containers? Are hydroponics systems to be used and if so, what type of space is required for growing containers/beds and nutrient reservoirs? Remember to consider the weight that benches will be required to support. Once space is allocated for seating, the remaining space can be planed for growing.Ĭonsider the type of plants that will be grown. If some areas of the greenhouse have less optimal light, they may be good areas to use for seating. ![]() Will the greenhouse be used exclusively for intensive plant growing or will sitting areas be included for relaxing, eating etc.? If it is to be used as a multipurpose room, consider the seating areas first. Type of Plant Material and Uses for the Greenhouse
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