Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Gunnison you can determine when you can 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.

You can plant anchusa much earlier in the year because they are very cold tolerant.

The earliest that you can plant anchusa in Gunnison is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant anchusa and expect a good harvest is probably August. If you wait any later than that and your anchusa may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your anchusa indoors.

Last Frost Date

The average date of last frost is May 15 in Gunnison. It might get as low as -30°F during the coldest months of winter.

Remember that USDA zone info for Gunnison is an average and the actual date of last frost will vary from year to year. Since half of the time in Gunnison last frost occurs after May 15 be ready to cover your anchusa in the event of one of those late frosts.

USDA Zone Info for Gunnison

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Gunnison

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