Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to estimate when you can plant heliotrope by referring to the USDA zone info for North Tonawanda.

Planting Calendar for Heliotrope

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

Since heliotrope are not cold tolerant it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant heliotrope in North Tonawanda 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. You probably don't want to wait any later than that or else your heliotrope may not have a chance to fully mature. Starting your heliotrope indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in North Tonawanda. You can expect an average low temperature of -10°F in the coldest months of winter.

Just be sure to remember that USDA zone info for North Tonawanda is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in North Tonawanda there is a last frost after April 15 be ready to protect your heliotrope in the event of a surprise late frost.

USDA Zone Info for North Tonawanda

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 North Tonawanda

You may be interested in your other planting guides for North Tonawanda.