When can I plant Bishop's Weed in Zone 1a

One of the first steps we take when we are determining 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.

It's a good idea to estimate when to plant bishop's weed by using the USDA zone info for Zone 1a.


Planting Calendar for Bishop's Weed

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

You can plant bishop's weed a lot earlier in the year because they are one of those plants that can tolerate quite a bit of cold weather.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant bishop's weed
Possibly ok, but a risky time to plant bishop's weed
Probably not a good time to plant bishop's weed

The earliest that you can plant bishop's weed in Zone 1a 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 bishop's weed and expect a good harvest is probably July. Any later than that and your bishop's weed may not have a chance to really do well. If you are starting your bishop's weed 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 June 15 in Zone 1a. We should expect an average low temperature of -60°F in the coldest months of winter.

Just be sure to remember that our actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Zone 1a and it will vary from year to year. Half of the time in Zone 1a it frosts late in the year after June 15 so be sure to be ready to protect your bishop's weed if we have one of those late frosts.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

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