One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Glen Carbon you can determine when it's the best time to plant strawflowers by checking out the USDA zone info.

Planting Calendar for Strawflowers

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

Strawflowers do ok in very little cold which means that you can plant them just a tiny bit earlier in the year than more sensitive plants.

The earliest that you can plant strawflowers in Glen Carbon 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 strawflowers and expect a good harvest is probably August. If you wait any later than that and your strawflowers may not have a chance to really do well. You can get started a little bit earlier by starting your strawflowers indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Glen Carbon. It might get as low as -10°F during the coldest months of winter.

It's important to remember that USDA zone info for Glen Carbon is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Glen Carbon last frost occurs after April 15 be ready to cover your strawflowers if you have a surprise late frost.

USDA Zone Info for Glen Carbon

Here is the info for USDA Zone 6a.

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

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Glen Carbon

You may be interested in your other planting guides for Glen Carbon.