Propagation Lights and Fluorescents

When plants are young, high pressure lighting can be too intense, causing them stress and negatively affecting growth. Instead, cuttings and seedlings can be placed under fluorescent lighting until they are ready to move on into the vegetative stage.

Fluorescent lights are available as single tube fittings or canopies that combine several tubes in a reflective hood.

Also available are compact fluorescent (CFL) lamps, which provide a more intense light for small spaces by effectively coiling several long tubes into a compact form. Lamps with a blue, white or purple colour can be used for propagation, though purple is favoured as it most effectively promotes root growth in the early stages.

Compact Fluorescents are now available as part of a variety of kits made up by Holland Hydroponics. Depending on your budget, they can be bought with either a simple lamp hanger or with a full CFL reflector, and each kit comes complete with a set of lamp hangers. Remember - these CFLS’s are self-ballasted, meaning no ballast is required

Lamps with a blue, white or purple colour can be used for propagation, though purple is favoured as it most effectively promotes root growth in the early stages. During propagation, lights should be kept on for 18 hours a day, although many growers find that quicker growth is achieved by keeping them on constantly, without a night period at all.

Because of their low running temperature they are ideal for growing in small spaces and their low power usage keeps costs low for the small scale grower. They are available in both blue/white for vegetative growth and red/orange for flowering. They are an excellent option during the vegetative stage because they can be placed much closer to the plant’s foliage, which tends to encourage the plant to remain short and bushy; favourable characteristics to look for when growing indoors.

Fluorescent systems can be used for flowering, but do not produce good results when compared to an HID system. Because the light they produce is low intensity they struggle to penetrate the foliage and reach lower branches, meaning that several fluorescent bulbs may be needed to fully cover your plants during flowering.

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