The USDA Zone info is a great tool for gardeners to help us determine 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.

By using the USDA zone info for Sussex it's a good idea to estimate when to plant achillea.

Planting Calendar for Achillea

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

Achillea tend to make it in cold weather which means that you can plant them quite a bit earlier in the year than more sensitive plants.

The earliest that you can plant achillea in Sussex 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 achillea and expect a good harvest is probably September. If you wait any later than that and your achillea may not have a chance to really do well. Starting your achillea indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Sussex. You can expect an average low temperature of -20°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Sussex is just an average and the actual date of last frost is different every year. Since half of the time in Sussex you get a frost after April 15 be ready to cover your achillea if you have a surprise late frost.

USDA Zone Info for Sussex

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

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

Plants to Grow in Sussex

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