One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to determine when to plant heliotrope by looking at the USDA zone info for Wapakoneta.

Planting Calendar for Heliotrope

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

Since heliotrope do not do well in cold weather you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant heliotrope in Wapakoneta 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. If you wait any later than that and your heliotrope may not have a chance to really do well. You can get started a few weeks earlier by starting your heliotrope indoors.

Last Frost Date

In Wapakoneta the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -10°F.

It's important to remember that USDA zone info for Wapakoneta may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Wapakoneta you get surprised by a frost after April 15 so be sure to be ready to cover your heliotrope if you have a surprise late frost.

USDA Zone Info for Wapakoneta

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 Wapakoneta

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