Onion 'Alpha'

Allium cepa var. cepa

How to grow Onion 'Alpha'

  • Full Sun

  • Medium

Plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Alpha is thought of as very hardy, so this plant will tend to survive through freezing conditions. Alpha needs a loamy, clay and sandy soil with a ph of 6.0 to 7.0 (weakly acidic soil to neutral soil).

Growing Alpha 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 Alpha about 28 days before your last frost date.

Transplanting Alpha

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

Harvesting Alpha