A commercial greenhouse is a large facility covered in glass or plastic where the environment is controlled to grow high-quality vegetables all year. In British Columbia (Canada) the main crops are cucumbers, peppers and tomatoes.
The climate is controlled
Computers regulate temperature, humidity, ventilation, light and CO₂. That's why it's important to close doors, not move equipment without permission, and report anything unusual (a broken window, a leak, a fan that stopped).
Plants don't grow in soil
Plants usually grow in blocks or slabs of growing media (such as rockwool or coco coir) and receive water and nutrients through drip lines. Every plant has a dripper: if you see one disconnected or leaking, tell your supervisor.
Tall plants and pipe-rail carts
Plants are trained upwards on strings and can reach several metres. To work at the top, carts or platforms run on the heating pipes along the floor (pipe rail). They are only used after you've been trained.
Pest control with insects
Many greenhouses use biological control: they release beneficial insects that eat the pests. Don't kill insects or remove the small bags or sachets hanging on the plants; report any pests you see.
Hygiene protects the plants
- Some plant viruses spread through hands, clothing and tools.
- Use the disinfecting mats or foot baths and wash your hands when you enter.
- Disinfect your tools as instructed (for example, when changing rows).
- Don't move between areas without following the hygiene rules.