Before planting it is a good idea to find your USDA Zone info to figure out your garden 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 figuring out when it's possible to plant impatiens is to look at the USDA zone info for Lawton.

Planting Calendar for Impatiens

Frost tolerance for impatiens:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since impatiens are not cold tolerant you have to wait until after the last frost before you can plant them.

The earliest that you can plant impatiens in Lawton is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant impatiens and expect a good harvest is probably August. If you wait any later than that and your impatiens may not have a chance to really do well. Starting your impatiens indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Lawton the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of 5°F.

Since the USDA zone info for Lawton is not always accurate the actual date of last frost will vary from year to year. Half of the time in Lawton you get surprised by a frost after April 15 so always be ready to cover your impatiens 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.