Equipments needed for watering the greenhouse

Equipment

For greenhouse watering, I use an all-purpose nozzle with a trigger control and a reversible cap. This is screwed onto the end of the hose. The nozzle provides an adjustable strong water stream or a sprinkle. With cap reversed it sends out a spray (fine or strong as you regulate it) which is good for cleansing foliage or applying liquid foliage fertilizers. With the cap removed, you get a full but fairly gentle flow to fill large pots or pails or for mixing quantities of fertilizer.

You can have automatic watering-either a homemade or a purchased system-but a small greenhouse operation may not justify it. One fairly simple method, actually semi-automatic because the water flow is controlled by hand, is sub-irrigation. A waterproof bench, (such as one with a metal liner), is partly filled with sand or gravel. The pots are placed on top of this layer. When needed, water (or liquid fertilizer) is piped into the bench via a permanent pipe connection or the hose until it reaches the base of the pots. When the soil in the pots has drawn up enough moisture through the drainage hole, the water is drained out of the bench.

If only a few pots or flats are involved, Fiberglas wicking, in contact with the soil in the pot and pulled through the bottom and into a pan of water, provides easy automatic watering. The important thing about sub-irrigating methods is that they assure consistent, even moisture to all plants.

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