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 figure out when to plant hollyhocks by using the USDA zone info for Kill Devil Hills.

Planting Calendar for Hollyhocks

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

Hollyhocks do well in moderate cold which tells us that you can plant them earlier than other frost tender plants.

The earliest that you can plant hollyhocks in Kill Devil Hills 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. You can get started a few weeks earlier by starting your hollyhocks indoors.

Last Frost Date

The average date of last frost is March 15 in Kill Devil Hills. It might get as low as 15°F during the coldest months of winter.

Keep in mind that USDA zone info for Kill Devil Hills is an average and the actual date of last frost will vary from year to year. Half of the time in Kill Devil Hills there is a last frost after March 15 so be sure to be ready to cover your hollyhocks if you have a late frost.

USDA Zone Info for Kill Devil Hills

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Kill Devil Hills

You may be interested in your other planting guides for Kill Devil Hills.