One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

By referring to the USDA zone info for Middletown it's possible to figure out when you can plant heliotrope.

Planting Calendar for Heliotrope

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

Heliotrope are not cold tolerant which means that it is necessary 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 Middletown 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 fully mature. You can get started a couple of weeks earlier by starting your heliotrope indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Middletown may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Middletown there is a last frost after April 15 so be sure to be ready to protect your heliotrope if you have a late frost.

USDA Zone Info for Middletown

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 Middletown

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