Your Weekly Electronic Gardening Guide
Practical Horticulture for Busy People.
Onions
About This Plant...
Family:
Liliaceae
Genus and species:
Allium cepa
Growing Season:
spring and fall
Indoor Sowing...
Time needed to reach transplant size:
4-6 weeks
When to transplant to garden:
6 weeks before to 2 weeks after last spring frost
Outdoor Sowing...
When to sow outdoors:
6 weeks before to 2 weeks after last spring frost
Other Sowing Guidelines...
Approx. germination time:
4-14 days
Germination temp.:
50-95 degrees F.
Sowing depth:
1/4 inch
Days to maturity:
75-150 days
Transplanting Guidelines...
Spacing between plants:
2-4 inches
Spacing between rows:
16-24 inches
Growing On...
Pests:
onion maggot
Diseases:
downy mildew
Harvest:
pick scallions when they are 6-8 inches tall; pick bulb onions after the tops have fallen over and the bulbs develop a papery skin
Growing tips:
plant sets or seedlings for a faster start
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