Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Jerseyville can be reffered to in order to estimate when it's a good idea to plant heliotrope.

Planting Calendar for Heliotrope

Frost tolerance for heliotrope:	Not tolerant of frost.
When to plant:	After the last frost.

Heliotrope require warm weather which tells us that it is important to wait until it warms up after the last frost has passed before you can plant them.

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

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Jerseyville. In the coldest months of winter you should expect an average low temperature of -10°F.

Just be sure to remember that USDA zone info for Jerseyville is just an average and the actual date of last frost will vary from year to year. Half of the time in Jerseyville last frost occurs after April 15 so be sure to be ready to protect your heliotrope if you have a late frost.

USDA Zone Info for Jerseyville

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 Jerseyville

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