Onion 'Walla Walla Sweet'

Allium cepa var. cepa

How to grow Onion '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. 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

Footnotes

1 http://en.wikipedia.org/wiki/Sweet_onion