Greenhouses - How to Build a Greenhouse Base

A great floor can be made from 2x4's and 2x6's, stepping stones, black plastic and pea gravel. The wood frame will make it easer to erect your greenhouse and the plastic will trap water spilled when watering the plants, which will then evaporate when the sun heats up the house. The gravel will give you a place to nestle the potted plants so that they do not fall over and will keep the mosquitoes from breeding in the spilt water. The plastic will seal the base from out side wind and stop the grass from growing inside your new greenhouse. The stepping stones will give you a better walking surface. And the wood base will make it easy to level up your greenhouse by shimming up between the frame and the ground. If you plan to grow plants in the ground use the plastic floor and some coffee cans with the bottoms and cut out, plant the cans half way in the ground through the plastic, plant the plants in the can, it works great and the coffee can gives you a convenient way to water the individual plants.

You will need four 2x6's and four 2x4's. Cut the 2x6's to size and lay them flat on level ground to form the shape of your greenhouse. Cut the 2x4's to size and lay them so that they overlap the but joints of the 2x6's, screw them all together, four screws at each corner and every 24" down the length of the 2x4's. this will create a lip on the inside of the greenhouse for you to staple the plastic floor to. The green house is installed on top of the frame at the outer edges. Install the floor as shown in the drawings. To anchor the house see drawings below.