When can I plant Anchusa in Zone 1b

One of the first steps we take when we are getting a good idea our gardening schedule is find our USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

In Zone 1b you can estimate when it's the best time to plant anchusa by checking out the USDA zone info.


Planting Calendar for Anchusa

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

Anchusa are one of those plants that can tolerate quite a bit of cold weather which means that you can start planting them much earlier than plants that are more sensitive to the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant anchusa
Possibly ok, but a risky time to plant anchusa
Probably not a good time to plant anchusa

The earliest that you can plant anchusa in Zone 1b is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant anchusa and expect a good harvest is probably July. If you wait any later than that and your anchusa may not have a chance to really do well. If you are starting your anchusa indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Zone 1b the average date of last frost happens on June 15. In the coldest months of winter we should expect an average low temperature of -55°F.

Always keep in mind that our actual date of last frost is an average because it is based on the USDA zone info for Zone 1b and it can change quite a bit from year to year. Since half of the time in Zone 1b last frost occurs after June 15 be ready to protect your anchusa if we have a surprise late frost.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.