There are a variety of fluorescent bulbs available that were developed specifically for lighting plants. Plant growth bulbs are ideal for plants. However, because they do not transmit green-yellow light, they jeopardize the appearance of home furnishings and human complexions. Cool white fluorescent bulbs are superior to plant growth bulbs in the amount of growth produced. This is attributed to the higher light intensity of cool white bulbs over plant growth bulbs.
Fluorescent bulbs are available in various wattages, sizes and shapes.
Although the long tubular bulb is most popular with interior gardeners, circular, U-shaped and panel bulbs are available. It is important to order fixtures for specific bulbs to be used in them. Standard industrial fixtures with white enamel or white porcelain reflectors are widely used by hobbyists. Fixtures that accommodate two 48 inch long fluorescent bulbs are the most commonly used and inexpensive to buy. Strip or channel fixtures may be used with reflectorized fluorescent bulbs.