Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Coldwater you can estimate when it's possible to plant anchusa by looking at 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 do well in a bit of cold which means that you can plant them earlier in the year than other plants that might not handle the cold.

The earliest that you can plant anchusa in Coldwater 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. If you wait any later than that and your anchusa may not have a chance to grow to maturity. If you are starting your anchusa indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Coldwater. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Coldwater is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Coldwater you get surprised by a frost after April 15 so be sure to be ready to protect your anchusa in the event of a surprise late frost.

USDA Zone Info for Coldwater

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in Coldwater

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