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 Chelsea you can determine when to plant anchusa by using the USDA zone info.

Planting Calendar for Anchusa

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

Anchusa can survive in cold weather which tells us that you can plant them a lot earlier in the year than more sensitive plants.

The earliest that you can plant anchusa in Chelsea 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 anchusa and expect a good harvest is probably September. You probably don't want to wait any later than that or else your anchusa may not have a chance to fully mature. Starting your anchusa indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Chelsea. You can expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Chelsea may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Chelsea it frosts late in the year after March 15 so make sure that you are ready to protect your anchusa if you have one of those late frosts.

USDA Zone Info for Chelsea

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 Chelsea

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