For the greenhouse growers, a good fertilization program is needed to bring the tuberous roots along to full flower.

Commercial greenhouse growers have found these types of fertilizer a tremendous help knowing they can be applied to pots of plants and know that the plant will have good nutrition after they are sold.

Although the Mikkelsen greenhouses are stricly wholesale, their hybrid lines are distributed widely and should be available through greenhouse growers.

From then on, greenhouse growers and hybridists had a hay day with the plant.

And local greenhouse growers will be selling their products, the familiar and the strange.

Fortunately, greenhouse growers have done much of the needed research and have been able to provide some excellent foliage plants that can do quite well when confined to pot culture.

In a recent survey of more than 300 greenhouse growers conducted by the Bedding Plant Institute, a growers' organization, impatiens was found to be the best-selling bedding plant nationwide.

Greenhouse Canada is the only national business magazine published exclusively for the commercial greenhouse grower in Canada.

As plants acquire nearly all their carbon from the atmosphere, greenhouse growers commonly supplement CO levels to 3-4 times the rate normally found in the atmosphere.

The insects are especially troublesome to home gardeners in the spring when greenhouse growers are raising crops for the summer six-pack sales.