Yellow onions are known as long day onions and are well suited for northern climates. They are a great storage onion that is versatile for cooking and an excellent variety for storage.
If it is not time to plant when you receive the bulbs, store in a cool, dry place with good air circulation. Avoid warm temperatures as the bulbs may start to sprout.
Plant in early spring as soon as the soil can be worked and temperatures do not go lower than -2°C (28°F).
Select and prepare the planting area. Onions prefer a location that is in full sun with loose, well-draining soil. Compacted soil will hinder bulb development.
Prior to planting, mix in well-rotted manure or compost into the soil to help aerate the soil.
Plant bulbs 2.5 cm (1”) deep and 8 cm (3”) apart, with the pointy end up. Avoid planting bulbs too close together as this will result in smaller bulbs.
Allow 30-45 cm (12-18”) between rows.
Water thoroughly after planting.
Sets can be planted weekly for a continuous supply.
Water needs: For most soil types, approximately 2.5 cm (1") of water is required per week. If soil is very dry or sandy, as much as 5 cm (2") of water is required weekly.