Table of Contents
What is a long day onion?
Long-day onions need about 14 to 15 hours of daylight to bulb. Short-day onions need 10 hours of daylight. Day-neutral onions form bulbs regardless of daylight hours and produce well in almost any region.
How long does it take to Grow onions from Seed?
Onions are cool-season crops that require 90 days or more to reach maturity. Because of this long growing season requirement and their preference for cooler weather, planting onion seeds directly into the garden in the spring makes it difficult for the bulbs to reach a good size before warm temperatures arrive.
When to plant onions?
Plant onions in early spring once the ground is workable. In-ground gardens and raised beds are both excellent options for growing onions. Space onion plants 6 inches apart in rows that are 12 inches apart. Grow them in a sunny spot that has fertile, well-drained soil with a pH of 6.0 to 6.8.

What is a Red Baron onion?
A mid-late maturing variety, Onion ‘Red Baron’ produces firm, flattish-round bulbs of a beautiful dark red colour. With eye-catching red rimmed flesh and a stronger flavour than most varieties, this RHS AGM variety makes an attractive addition to salads. An excellent cropping red onion with good storage potential.
Should I plant short or long day onions?
Planting onion seed directly in the garden works best in places with a longer growing season. This usually means planting short-day onions, those that don’t require as many hours of daylight.

What happens if you plant short day onions in the North?
For northern growers: Note: planting short day onions in the north is likely to result in early bulb development before the top growth is developed enough to sustain the bulb, resulting in smaller bulbs.
How many onions will one onion grow?
How Many Onions Grow From One Bulb? One onion bulb will grow one onion. When onion bulbs are planted, they are a small version of a larger onion that has been grown the previous season. The small planted onion bulb swells and develops into one mature onion.
How many onions do you get from one seed?
Only one onion grows from one onion seed. Under normal conditions, an onion seed produces only one onion.
How late can you plant onions?
As far as temperatures go, onions (Allium cepa) are a hardy plant that can grow almost any time of year.
What are companion plants for onions?
11 Companion Plants to Grow With Onions
- Cabbage. Onions will generally work best with Brassicas, members of the cabbage family.
- Chamomile.
- Summer savory.
- Carrots.
- Leeks.
- Beets.
- Lettuce.
- Strawberries.
How big do Red Baron onions grow?
A mature Red Baron onion plant is 6 inches wide and 18 inches tall, so leave at least 4 inches of space between larger sets to provide room to grow.
When should I plant Red Baron onion sets?
Garden care: Plant this onion from February to April, 3cm deep and 12cm apart. Lift the onions when they are mature (normally in August) and allow them to dry before using.
What is the easiest onion to grow?
Green Onions, Bunching Onions or Scallions They are usually the first onion to harvest and are non-bulbing. While mild, they are also flavorful and often chopped and served as a garnish for salads and soups. Varieties we grow: Evergreen.
Should I grow long or short day onions?
But it’s important to know the long-day, short-day difference when you’re starting your own onions from seed. Planting onion seed directly in the garden works best in places with a longer growing season. This usually means planting short-day onions, those that don’t require as many hours of daylight.
Do onions need water everyday?
Onions need a lot of water, but the soil should never get soggy. Ideal onion water needs are to irrigate to a depth of an inch (2.5 cm.) once a week rather than a light sprinkling each day.
How many onions should I plant for a family of 4?
Planting a vegetable garden for a family
Crop (number of plants per ft. of row) | Number of plants per person |
---|---|
Leaf lettuce (Thin to 3 plants/ft. of row) | 24 plants |
Melon (1 plant/6 ft. of row) | 1-2 plants |
Onion (4 sets/ft. of row) | 12-20 sets |
Peas (6 plants/ft. of row) | 15-20 plants |
Can you leave onions in ground over winter?
It’s a little-known fact that many seasoned gardeners aren’t aware of: you can grow onions (and shallots) in the winter. These super-hardy plants can survive incredibly cold temperatures with a little protection, and provide quality bulbs even after they bolt in the spring.