Artificial Lighting Of Plants

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Artificial Lighting Of Plants
Artificial Lighting Of Plants
Video: Artificial Lighting Of Plants
Video: Can You Grow Plants In Artificial Light? 2023, February
Anonim
lamp for flowers
lamp for flowers

The difference in illumination in summer and winter is so great that there is not enough natural light for plants, unless the temperature drops and transitions to the resting phase. If in the summer the plants had to be shaded from the hot midday sun with a tulle curtain, then with the onset of autumn it is necessary to rearrange the plants as close as possible to the light, move those plants that stood near the window to the windowsill, those that stood in the center of the room, place them closer to the window. Moreover, if in the summer only plants that carry the sun could be on the sill of the southern window, then in winter almost all plants can be placed on the windowsill of the same southern window, since the autumn and winter sun does not often indulge in its appearance. Shading will only be needed on especially sunny days.

How do you know if your plants don't have enough light?

Some people confuse the signs of a lack of light and take them for those when the plant suffers from overdrying of an earthen coma or excessive watering, but if you look closely, you can figure it out. First of all, with a lack of light, shoots begin to stretch out, new leaves are smaller than old ones and their color is not so bright and saturated. In variegated forms of plants, the color of the leaves from a lack of light becomes more monotonous or completely green. The lower leaves begin to dry out and fall off, the apical buds do not develop. If this is a flowering plant, then the flowers gradually fall off, flowering stops or small, not beautiful flowers are formed. The most common pattern is when the plant stops growing altogether, new shoots are not formed, and the old leaves begin to dry out and die off a little. Of course there are plantswhich are in a dormant state in winter, while they also do not form new shoots, but old leaves in large quantities should not die off. Rearranging plants closer to the light is not always possible, and not all plants will fit on the windowsill.

Fluorescent lights for plants

Most people get by with artificial lighting, i.e. lighting of chandeliers, lamps, sconces, etc. But not all plants receive such light, in addition, incandescent lamps emit heat, which harms plants if they are close. Therefore, if your plants do not have enough light, use, for example, fluorescent lamps. The lighting from them is as close as possible to natural light and they almost do not emit heat. In addition, fluorescent lamps consume 4 times less energy than incandescent lamps.

There are a wide variety of fluorescent lamps on sale now, so all you have to do is buy and hang. The distance indicated for the placement of plants - 30-60 cm for decorative deciduous and 15-30 for decorative blooming - is very conditional. This means that if there are many lamps and the whole room is very light from this - just like on a clear day in summer, then the plants do not need to be placed so close to the lamps. But if you have one or two lamps, they are clearly not enough for the whole room, and the plants are placed as close as possible to the lamps, at the distance indicated above. If the plant turns out to be located on one side of the lamp, then periodically it must be turned so that the crown remains uniform. If there is not enough lighting even for those plants that stand on the windowsill,Then you can hang fluorescent lamps from both sides in the window niche.

The use of one 20 W fluorescent lamp, at a distance of 30 cm from a decorative leafy plant, for example, a medium-sized cissus or ficus benjamin, is quite enough to make up for the lack of natural light in autumn and winter.

backlight for flowers
backlight for flowers

The duration of artificial lighting directly depends on the natural one. This is usually a few hours in the morning or a few hours in the evening. Those. your fluorescent lights will be on in the morning before you have to leave for work, and in the evening until you go to bed. But in total, this time should be about 6-8 hours. On especially cloudy days until 12 noon. If the day is especially sunny, 3-4 hours of artificial light is enough. In order for plants to bloom in autumn and winter, for example, Saintpaulias, they need about 12-14 hours of good continuous lighting.

The quality of flowering and the number of flowers will depend on the length of daylight hours. It should only be borne in mind that most plants need a dormant period and prolonged forced flowering in winter depletes plants (with the exception of winter flowering plants). There is such a concept - photoculture - these are plants grown partially or completely under artificial lighting.

If a large plant, such as a monstera, is standing on the floor in the corner of the room, the lighting on one side will not be enough or it will not be uniform, but if the lamp is suspended from the ceiling, it may be far from the plant. In this case, you can place one lamp on each of the walls, and put the plant at a distance of 40-60 cm from them, then the lighting will be more uniform and sufficient.

Growing plants under artificial lighting

What to do if there are no windows in the room at all. Many plants can be grown under artificial lighting, but at the same time it is necessary, firstly, to use only fluorescent lamps and, secondly, to correctly observe other modes of care - temperature and water. In addition, such areas should be regularly ventilated. The difference between such plant breeding is that artificial lighting should be as close to natural as possible - continuously for about 12-14 hours in spring-summer, 7-9 hours in winter. It is desirable that not only the plant (s) be illuminated, but the entire room. These conditions most often occur in offices and workspaces, where many fluorescent lamps are suspended from the ceiling and the room is well lit.

Basically, plants that do not require direct sunlight are suitable for growing under artificial lighting conditions only. Those. these are plants suitable for growing on east, west and north windows. For placement in a room where there is no natural light, you can use the nephrolepis fern, tradescantia, dracaena bordered, elastica ficus (rubbery), Sprengeri asparagus, scindapsus, philodendron, pandanus, peperomia, monstera, etc. From flowering plants, Chinese rose, gloxinia, pelargonium, uzambara violet. These are mostly hardy and not whimsical plants.

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