One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Lexington should be looked at to figure out when you can plant welsh onion.

Planting Calendar for Welsh onion

Frost tolerance for welsh onion:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Welsh onion can survive in mild cold which means that you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant welsh onion in Lexington is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant welsh onion and expect a good harvest is probably August. You probably don't want to wait any later than that or else your welsh onion may not have a chance to really do well. You can get started a few weeks earlier by starting your welsh onion indoors.

Last Frost Date

The average date of last frost is April 15 in Lexington. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Lexington is just an average the actual date of last frost will vary from year to year. Since half of the time in Lexington you get a frost after April 15 be ready to cover your welsh onion in the event of one of those late frosts.

USDA Zone Info for Lexington

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Lexington

You may be interested in your other planting guides for Lexington.