I still didn't feel I was making enough to expand the greenhouse. So, what I did instead was double the growing space by switching to a double deck bench system inside the greenhouse. This actually was beneficial to me twofold. Not only did it provide me with a larger growing area, it also solved a shading problem I was having.

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What I did was put a full length bench, which measured about 2 feet wide, as opposed to the two 3 foot wide benches I already had. These benches also had legs which made them stand about 2 feet high. I put one 2 foot wide bench on top of each of the original 3 foot wide benches I had in the greenhouse.

I also customized the top benches by inlaying 3 inch deep steel trays. These steel trays are made out of galvanized steel, for better durability. The purpose of these galvanized metal trays was to prevent dripping of water from the upper benches to the lower benches.

As mentioned above, these additional benches maximized my growing space; they also gave me some much needed shade for some of my plants. These upper level benches cut off some of the light to the lower level benches. The partial shade created, made an excellent place to grow African violets in.

I could use any space closest to the glass on the south side as well as all the space on the upper level benches to put sun loving plants. These areas were still getting full sunshine. By using the double deck bench system, I was able to give the plants more room.

One sure killer of plants is overcrowding. If a plant is too overcrowded it will not be able to grow symmetrically or worse yet, die. It also allowed for better air flow around each plant. Good air circulation is a must, to help combat fungus and plant diseases.

In your greenhouse, you may work out the use of space a little or a lot differently. It always depends on what you want to grow and also on the limitations your particular site may have as to light. It's usually a good idea to solve some of the space problems gradually as experience indicates.

On the south-side, top-deck bench, I place potted seedlings of gloxinias (hybrids from crosses involving gloxinias and rechsteinerias). Here, too, I place starting tubers as well as plants which have finished flowering and are ripening seeds. On the north-side top deck, I set flats of episcias and rooted glox-inera cuttings. Trailers such as aeschynanthus, columnea, cissus, ceropegia (rosary vine), and plectranthus take up little space and do a good job of covering the sides of the galvanized tray.

On the lowest bench, close to the windows on the south side, I have slipper gloxinias and their South American relatives, the red- and orange-flowered rechsteinerias, as well as more gloxinias, a few species amaryllis and pink polka-dot plants. The rest of the first-level bench area, shaded by the top deck, is devoted to African violets. Additional space is gained by hanging baskets from the ceiling. I plant kohleria, columnea, and some orchids in these. I think hanging baskets always make a greenhouse more attractive.