One of the first steps you take when you are determining 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.

The USDA zone info for Burnsville should be read to determine when to plant heliotrope.

Planting Calendar for Heliotrope

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

Since heliotrope are not cold tolerant it's important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant heliotrope in Burnsville is May. However, you really should wait until June 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 fully mature. You can get started a couple of weeks earlier by starting your heliotrope indoors.

Last Frost Date

The average date of last frost is May 15 in Burnsville. In the coldest months of winter you should expect an average low temperature of -25°F.

Always keep in mind that USDA zone info for Burnsville is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Burnsville you get surprised by a frost after May 15 so always be ready to cover your heliotrope if you have a late frost.

USDA Zone Info for Burnsville

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Burnsville

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