If you have an electricity supply installed in your greenhouse, then you can easily add a lighting system to extend the hours you can work and provide a little extra heat for your plants. Whilst standard bulbs may offer enough light to work by comfortably, the addition of special growing lamps will enable you to lengthen daylight hours for the plants. This is useful during the winter and spring when natural light levels are low as it will help to improve the plant's growth.
The light from each portion of the colour spectrum affects plant growth and responses in different ways:
- Red light: required for flower production, although too much will cause spindly growth.
- Yellow light: required for chlorophyll production.
- Blue light: required for photosynthesis; high levels will produce dark green compact growth.
Plants should receive a wide spectrum of light for healthy growth.
