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.

A common way of estimating when it's possible to plant lysimachia is to examine the USDA zone info for Lawton.

Planting Calendar for Lysimachia

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

Lysimachia are moderately cold tolerant which tells us that you can start planting them earlier than plants that are more sensitive to the cold.

The earliest that you can plant lysimachia in Lawton 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 lysimachia and expect a good harvest is probably September. Any later than that and your lysimachia may not have a chance to fully mature. Starting your lysimachia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Lawton. You should expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Lawton is just an average the actual date of last frost will vary from year to year. Half of the time in Lawton last frost occurs after April 15 so make sure that you are ready to protect your lysimachia in the event of a surprise late frost.

USDA Zone Info for Lawton

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°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 10°F.

Plants to Grow in Lawton

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