When can I plant Rock Cress in Zone 1b

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

It's a good idea to estimate when it's the best time to plant rock cress by looking at the USDA zone info for Zone 1b.


Planting Calendar for Rock Cress

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

Since rock cress are very cold tolerant you can plant them a lot earlier in the year than more sensitive plants.

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

The earliest that you can plant rock cress 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 rock cress and expect a good harvest is probably July. If you wait any later than that and your rock cress may not have a chance to grow to maturity. If you are starting your rock cress indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on June 15 in Zone 1b. In the coldest months of winter we can expect an average low temperature of -55°F.

Always keep in mind that USDA zone info for Zone 1b is an average and our actual date of last frost is different every year. Since half of the time in Zone 1b it frosts late in the year after June 15 be ready to cover your rock cress in the event of a 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.