Picking fresh, organic fruits and vegetables or enjoying growing tropical plant varieties during the dead of winter gives gardeners a much needed reprieve from cold days. With the variety of greenhouse options available, in various sizes and price ranges, homeowners can easily add one to their landscape. You'll grow plants in a greenhouse much the same way as growing outdoors; your hardest decision may be choosing a greenhouse.
Fill the 5-gallon pots with potting soil, if using seeds. Fill the pot half full, when using transplants. If space allows, set up raised beds on the floor of the greenhouse to grow larger plants, such as melons. Fill the beds with one-third peat moss, one-third vermiculite and one-third compost. Mix thoroughly with a rake.
Plant one or two seeds one inch deep in the soil. Read seed packets for specific spacing requirements. Top the seeds with a thin layer of soil. If using transplants, plant in the beds by making a hole deep and wide enough to fit the roots and base of the transplant. When using pots, place the transplant on top of the soil in the half-filled pot. Pour more soil around the sides of the plant up to its base. Pack soil around the roots and base of transplants.
Stick cages into the soil around vegetables that require staking, such as tomatoes or peppers. Place trellises behind vining vegetables, such as pole beans and peas.
Water the plants daily at soil level, unless the soil is still moist. Prepare a fertilizer solution formulated for vegetables and store it in a watering can to use for daily water. Purchase the fertilizer from a garden center. Follow the directions provided with the fertilizer.
Turn the heat of the greenhouse to 70 degrees Fahrenheit during the day and down to 50 degrees Fahrenheit at night.