Years ago I discovered first hand that onions transplants — small onion seedlings grown from seed — give you a better overall crop of onions than growing from sets. (Sets are small onions grown one year, cured, and then planted the next year.)
As you may remember from previous posts I’ve been buying onion transplants from Dixondale Farms for many years. They’re not organic farmers — although Bruce Frasier (the family member now in charge of the 100 year old family business in Texas) has written about the farm’s attempts to grow at least some onions organically.
I plant at least 1500 onions a year and being able to order transplants is very convenient. I never worried about them not being organic to start out — because by the time the tiny transplants get established and grow to maturity in my wonderful soil — I feel they’re just fine and free of any chemical fertilizer by harvest.
Growing onions from Seed
Last year I started experimenting with onion seed — the only veggie I didn’t already start from seed. I’m too dependent on Dixondale and need to become more self-sustaining. Starting everything from seed is a significant step in that direction.
Onions are easy to grow, BUT it’s a question of how much time you have to get them up and growing in the garden in time to develop strong roots and a lot of “leaves” before daylight hours trigger bulbing. Without ample time to grow you get pearl-onion sized onions.
Thus far, my transplants that I’ve grown from seed have not been big enough to produce the size onion I want when transplanted to the garden. The ones I get from Dixondale are various sizes — but most are big enough to grow to maturity in my garden.
If you have enough light and you can grow indoors — you shouldn’t have any trouble at all growing onions from seed if you start early enough. In my area that would be towards the end of January.
I’m not set up to grow indoors. I grow everything in jugs (outside) which act as mini-green houses. Everything does well with this wintersown method. But the onions don’t do as well as I want them to do.
Worse Case Scenario is not too Bad
The good news is — about the worse that can happen if your onions don’t have enough time before bulbing —
- You’ll have very late spring onions in the fall and through the winter — at a time when you’ve used most of the other mature onions or
- you’ll have small onions that you can cure and plant as onion sets either in the fall or coming spring.
Dixondale’s Chart for Ship/Plant Dates
Dixondale has a chart on their site that determines what they feel is the proper time to plant transplants in your area. I NEVER go by this chart. If I did — my onions would not have enough time to grow big before daylight triggered bulbing. According to their chart I’d be planting about the 11th or 12th April which I’ve found to be way too late.
When you Plant Too Late
A couple of year ago I helped a lady in North Carolina determine what she had to do to get a good crop of onions. She had never been able to grow onions any bigger than pearl onions.
After I had all the details of what she was doing — it was an easy solution. She was planting too late (first week in April) and was planting two inches deep rather than the one inch depth that onions love.
She now plants the middle of February. She uses transplants and only plants an inch deep. She gets wonderful onions.
When to Plant Your Transplants
Contradicting their chart on planting dates — at least in my area — a Dixondale newsletter advised gardeners to begin planting transplants 4 to 6 weeks before the last frost date in their area.
If I use the frost-date chart that Dixondale provided (different charts will show different dates) my last frost date would be about April 6. Planting 6 weeks before that would be just about right.
I usually start staggered plantings of onions the 2nd or 3rd week of February through the first week of March. This way the plants have plenty of time to grow bigger before daylight hours trigger bulbing.
The longer you garden and pay attention to what your onions do each year — you can fine tune the perfect planting date for onion transplants in your garden. Until then – generally speaking, 6 weeks before your last frost date is not a bad rule of thumb to follow.
Other Posts on Onions:
Organic gardening is easy, effective, efficient —- and it’s a lot healthier.
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