How to choose a greenhouse?
A greenhouse is an asset to any garden and essential to many for the propagation of seeds and plants and for providing suitable growing conditions for a wide range of plants that would be unable to survive in the external environment.In order to obtain maximum benefit from a greenhouse it is necessary to understand certain factors when embarking on the construction, equipping of and working within a greenhouse.Position
It is important that as much light as possible enters the greenhouse, therefore consideration as to the position of the structure is required. Tall trees, boundary fences and walls can create shadows, obstructing light, so thought is required as to how much sunlight is available all year round, not just the summer months. A greenhouse facing south is ideal if it is a lean-to structure against a wall. However, free-standing, independent structures should be placed east – west in order to avoid the lattice blind effect on conventional apex structures and gain maximum sunlight during the winter and spring.
Choice of materials for the greenhouse structure
The choice of materials is normally limited to either wood or aluminium, although less expensive structures based on alloys and plastic are available for the amateur market. The advantages of wood are that they provide a greenhouse with less condensation and the appearance can be more appealing. The timber used for this type of construction is usually Western Red Cedar, but Redwood, Teak and Oak are occasionally used.
Aluminium, either bare or painted (usually powder coated) is a lighter material and is resistant to corrosion and is popular for both commercial and domestic greenhouses. Much development work has been undertaken of late and manufacturers are now able to offer an alternative ‘wood effect’ profile echoing those of the wooden greenhouse of yesteryear.
