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.

In Hartwell you can determine when it's a good idea to plant armeria by looking at the USDA zone info.

Planting Calendar for Armeria

Frost tolerance for armeria:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since armeria are very cold tolerant you can plant them a lot earlier in the year than other frost tender plants.

The earliest that you can plant armeria in Hartwell 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 armeria and expect a good harvest is probably September. Any later than that and your armeria may not have a chance to grow to maturity. You can get started a little bit earlier by starting your armeria indoors.

Last Frost Date

The average date of last frost is March 15 in Hartwell. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Hartwell is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Hartwell you get a frost after March 15 so make sure that you are prepared to cover your armeria in the event of a late frost.

USDA Zone Info for Hartwell

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Hartwell

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