When should I plant Walla Walla onions?

Asked by: Edwin Moya

Plant your Walla Walla onion starts in late April in full sun in well-drained and loose, sandy soil. Space plants 4 to 6 inches apart in rows that are 12 to 18 inches apart. According to the Illinois Extension Vegetable Garden Guide, you can harvest green onions four to six weeks after planting sets.

What is the best month to plant onions?

Onions are a cold-season crop, so the best time to plant them is in early spring. The cool weather will encourage them to grow tops. And as the weather warms up, that’s the time they form bulbs. If you live in mild-winter areas, plant onions in the fall instead.

How long does it take Walla Walla onions to grow?

150 days

Matures in 150 days, spring sown.

How do you plant Walla Walla onion starts?

Onion sets and Walla Walla starts should be planted an inch deep about four inches apart in rows 12 to 15 inches apart. Onions from seed started indoors in late February can be planted in April when they are about the size of a pencil lead. It will take about two weeks for the green shoots to appear and start growing.

Can you plant Walla Walla onions in the fall?

So a September planting is just right. Some varieties are better for overwintering than others. Walla Walla Sweet, available from High Mowing, Territorial Seed and other companies, has worked very well for us.

Is it too late to plant onions?

As far as temperatures go, onions (Allium cepa) are a hardy plant that can grow almost any time of year.

Can onions be planted in 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.

What should not be planted with onions?

What should not be planted next to onions? You should NOT plant beans, peas, sage or asparagus next to onions as they require different conditions and therefore in order for one to thrive, the other will not.

How do you fertilize Walla Walla onions?

Be sure to give your onions fertilizer during the summer and plenty of water until a few weeks before harvest. Then let the soil dry out for a couple of weeks. This will help them last longer. Walla Wallas are mild, sweet and do not keep very long.

How often do you water Walla Walla onions?

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. If you are watering onions with a hose or sprinkler, water in the morning rather than during the heat of the day, which will just end up being evaporated. Overhead watering can spell trouble.

Do onions come back every year?

Regular onions, also called common onions (Allium cepa), are biennial plants that produce leaves the first year followed by flowers and seeds the second year. Gardeners treat common onions as annual vegetables however, and pull the bulbs at the end of the first growing season.

Can I plant onion sets in September?

Buy the onion sets in September for planting in late September to late October. Seeds are available but the procedure if much more drawn out and sets definitely work best at this time of year. The onion crop will be ready for harvesting in June. Autumn planting onions are a low maintenance crop.

Are Walla Walla onions short or long day?

long day

The Walla Walla, as in Walla Walla, Washington, is long day variety, more appropriate to the north where somewhat cooler conditions prevail.

How tall do Walla Walla onions get?

How tall do Walla Walla onions grow? Walla Wallas grows approximately 1 foot tall. If you don’t have enough space in your garden, plant them around the perimeter of a raised bed or container.