How to Grow Yellow Granex Onion
Allium cepa 'Yellow Granex'
Your complete guide to growing Yellow Granex Onion.
📷 Wikipedia: OnionWhen to Plant Yellow Granex Onion
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | — | June – July | September |
| Zone 2 | — | May – July | September |
| Zone 3 | — | May – June | August – October |
| Zone 4 | — | April – June | August – October |
| Zone 5 | — | April – May | August – November |
| Zone 6 | — | April – May | July – November |
| Zone 7 | — | March – May | July – November |
| Zone 8 | — | March – April | June – December |
| Zone 9 | — | February – March | May – December |
| Zone 10 | — | January – March | May – December |
| Zone 11 | — | January – February | April – December |
| Zone 12 | — | January – February | April – December |
| Zone 13 | — | January – February | April – December |
Companion Plants for Yellow Granex Onion
✓ Good companions
Onions deter cabbage loopers and aphids that commonly attack brassicas
Onions repel cabbage worms, flea beetles, and other brassica pests
Onions repel carrot flies while carrots help break up soil for onion bulb development
Onions provide natural pest protection while lettuce acts as living mulch
Both repel nematodes and various garden pests through natural compounds
Onions repel aphids and spider mites while peppers don't compete for nutrients
Onions deter slugs, aphids, and other soft-bodied pests that damage strawberry plants
Onions deter aphids, hornworms, and other tomato pests while improving tomato flavor
✗ Keep away from
Onions can inhibit asparagus growth and both compete for similar soil nutrients
Beans and other legumes can inhibit onion growth and bulb development
Legumes can stunt onion growth through root competition and nitrogen interference
Nutrition Facts
Per 100g serving (USDA FoodData Central)
