The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can figure out when it's the best time to plant hollyhocks in Vandergrift by reviewing the USDA zone info.

Planting Calendar for Hollyhocks

Frost tolerance for hollyhocks:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since hollyhocks do well in moderate cold you can plant them a little bit earlier in the year than other frost tender plants.

The earliest that you can plant hollyhocks in Vandergrift is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant hollyhocks and expect a good harvest is probably September. If you wait any later than that and your hollyhocks may not have a chance to fully mature. If you are starting your hollyhocks indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Vandergrift. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Vandergrift is an average the actual date of last frost will vary from year to year. Half of the time in Vandergrift there is a last frost after April 15 so be sure to be ready to cover your hollyhocks if you have one of those late frosts.

USDA Zone Info for Vandergrift

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 Vandergrift

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