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 figuring out when you can plant angelonia is to look at the USDA zone info for Collinsville.

Planting Calendar for Angelonia

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

Since angelonia are barely cold tolerant you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant angelonia in Collinsville 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 angelonia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your angelonia may not have a chance to really do well. You can get started a little bit earlier by starting your angelonia indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Collinsville. In the coldest months of winter you should expect an average low temperature of 0°F.

It's important to remember that USDA zone info for Collinsville is just an average and the actual date of last frost is different every year. Since half of the time in Collinsville there is a last frost after April 15 be ready to cover your angelonia if you have a late frost.

USDA Zone Info for Collinsville

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 Collinsville

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