Seed Swaps

Onion 'Walla Walla Sweet'   

Allium cepa var. cepa

  • 85 plantings
  • 8 available for swap
  • 7 wanted
  • 51 stashed

'Walla Walla Sweet' is a Onion variety in the Allium genus with a scientific name of Allium cepa var. cepa. Walla Walla Sweet is a heirloom variety. When ripe, fruit appear in these approximate colours:   Sandy brown and   Floral white.

Walla walla onions are a very sweet, large round golden-skinned variety. Great freshly sliced raw on pizzas and salads. Long day type, with a short shelf life. Firm texture. Very cold hardy with large yields. Has quite low disease resistance. Walla walla has yellow / light brown skin, with white flesh.

Walla Walla Sweet grows as a Perennial and is a Vegetable. Being a Perennial, it tends to grow best over several years (approx 3 years and greater). Walla Walla Sweet is known for growing to a height of approximately 45.0 cm (that's 1.46 feet in imperial).

France is believed to be where Walla Walla Sweet originates from.

Walla Walla Sweet Onion is normally quite a low maintenance plant and is normally very easy to grow - great for beginner gardeners!

This variety plant info is provided by the myfolia gardener's wiki. All details about Walla Walla Sweet have been kindly provided by our members.

How to grow Walla Walla Sweet

  • Full Sun

  • Medium

Plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Walla Walla Sweet is thought of as very hardy, so this plant will tend to survive through freezing conditions. USDA Hardiness Zone 3 to 10 are typically the USDA Hardiness Zones that are appropriate for this plant (although this can vary based on your microclimate). Ideally plant in loamy, clay and sandy soil and try to keep the ph of your soil between the range of 6.0 and 7.0 as Walla Walla Sweet likes to be in weakly acidic soil to neutral soil.

Growing Walla Walla Sweet from seed

Try to aim for a seed spacing of at least 1.95 inches (5.0 cm) and sow at a depth of around 0.98 inches (2.5 cm). Soil temperature should be kept higher than 13°C / 55°F to ensure good germination.

By our calculations, you should look at sowing Walla Walla Sweet about 28 days before your last frost date.

Transplanting Walla Walla Sweet

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Walla Walla Sweet is a very hardy plant.

Harvesting Walla Walla Sweet

This variety tends to be ready for harvesting by early autumn.

Onion Walla Walla Sweet Etymology

The Walla Walla sweet onion is named for Walla Walla county (Washington, USA) where the variety originated in the early 1900’s.1