The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Loudon you can figure out when it's possible to plant lettuce by using the USDA zone info.

Planting Calendar for Lettuce

Frost tolerance for lettuce:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant lettuce a little earlier in the year because they are moderately cold tolerant.

The earliest that you can plant lettuce in Loudon is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant lettuce and expect a good harvest is probably September. If you wait any later than that and your lettuce may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your lettuce indoors.

Last Frost Date

On average the last frost is on April 15 in Loudon. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Loudon is just an average the actual date of last frost will vary from year to year. Since half of the time in Loudon you get a frost after April 15 be ready to protect your lettuce if you have a late frost.

USDA Zone Info for Loudon

Here is the info for USDA Zone 7a.

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

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

Plants to Grow in Loudon

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