short-day

In the South, where onions are typically sown in the fall and transplanted to harvest in late spring, short-day varieties are the choice; in the Northeast, where bulb formation happens in the summer from spring transplants, long-day varieties are indicated.

Short-day onions start forming a bulb when day length reaches 12 to 13 hours.

Gardeners south of 36 degrees North latitude should be growing short-day onions, and those in between should grow intermediate-day types.

The strawberries he selected for the company’s first vertical farms in New Jersey are known as “short-day cultivars.”

Most growers plant June-bearing strawberries, which are strongly affected by day-length and only initiate flower buds under short-day conditions, resulting in a brief period of fruit production.