The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to determine when to plant heliotrope by checking out the USDA zone info for Oakmont.

Planting Calendar for Heliotrope

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

It's a bad idea to plant heliotrope until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant heliotrope in Oakmont 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. Starting your heliotrope indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Oakmont. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Oakmont 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 Oakmont it frosts late in the year after April 15 so make sure that you are prepared to cover your heliotrope if you have a surprise late frost.

USDA Zone Info for Oakmont

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Oakmont

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