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

A way of determining when to plant achillea is to use the USDA zone info for Big Spring.

Planting Calendar for Achillea

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

Achillea do well in cold which means that you can get them planted much earlier than other frost tender plants.

The earliest that you can plant achillea in Big Spring 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. Any later than that and your achillea may not have a chance to really do well. You can get started a little bit earlier by starting your achillea indoors.

Last Frost Date

On average all chance of frost has passed is on March 15 in Big Spring. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Big Spring is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Big Spring you get surprised by a frost after March 15 so always be ready to protect your achillea in the event of a surprise late frost.

USDA Zone Info for Big Spring

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 Big Spring

You may be interested in your other planting guides for Big Spring.