Before planting it is a good idea to find your USDA Zone info to figure out 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.

By using the USDA zone info for Auburn it's possible to determine when it's the best time to plant anchusa.

Planting Calendar for Anchusa

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

Since anchusa do well in cold you can plant them quite a bit earlier in the year than more sensitive plants.

The earliest that you can plant anchusa in Auburn 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 grow to maturity. You can get started a few weeks earlier by starting your anchusa indoors.

Last Frost Date

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

Since the USDA zone info for Auburn may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Auburn you get surprised by a frost after April 15 so always be ready to cover your anchusa if you have one of those late frosts.

USDA Zone Info for Auburn

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Auburn

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