Companion planting
Friendly neighbors and a few combinations to give extra space. Pairs with What can I grow? when you are sketching beds. For fallow gaps and soil recovery, see cover crops.
Type
Crop focus
Benefit
- Carrot & onion familyPair
Carrots · Onions or leeks
Onion scent can help mask carrot rows from carrot rust fly in backyard scales; different root depths reduce direct competition.
- Avoid: fresh allium row next to beans/peasAvoid
Onions / garlic (active row) · Beans or peas
Folk guidance plus some field experience: very close alliums can slow legumes for unclear reasons—separate rows or time succession so peaks do not overlap.