The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant welsh onion in Zone 13a can be determined by reviewing the USDA zone info.

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.

Since welsh onion do ok in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant welsh onion in Zone 13a is January. However, you really should wait until February 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 November. If you wait any later than that and your welsh onion may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your welsh onion indoors.

Last Frost Date

In Zone 13a it never frosts. It might get as low as 60°F during the coldest months of winter.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Zone 13a and it will vary from year to year. Since it never frosts in Zone 13a you do not have to be ready to protect your welsh onion if you have a surprise late frost.

USDA Zone Info for Zone 13a

Here is the info for USDA Zone 13a.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	60°F
Highest Expected Low	65°F

This means that on a really cold year, the coldest it will get is 60°F. On most years you should be prepared to experience lows near 65°F.

Plants to Grow in Zone 13a

You may be interested in your other planting guides for Zone 13a.