From an article found at
https://homegrowncannabisco.com/ by the man Kyle Kushman...
Basil:
- masks cannabis smells
- repels harmful insects like aphids, mites, whiteflies, slugs, snails, mosquitos
- increases terpene production
Lavender:
- masks cannabis smells
- repels fleas, mice, ticks
Marigold:
- visually hides cannabis
- repels moths, whiteflies
- attracts aphids and wasps
- roots produce an insecticide
Chamomile:
- prevents fungus infections
- repels whiteflies and mosquitoes
- attracts hoverflies (which eat other harmful insects)
Lemon balm:
- masks cannabis smells
- repels gnats and mosquitoes
Sunflowers:
- disguises/blocks crops
- attracts bugs that eat spider mites
- more interesting to aphids, slugs and whiteflies than cannabis
- improve soil drainage
Clover:
- increase nitrogen
- improve soil drainage
Peppermint:
- masks cannabis smells
- repels aphids, ants, roaches and mice