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.

The best time to plant bishop's weed in Amherst should be determined by checking out the USDA zone info.

Planting Calendar for Bishop's Weed

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

Since bishop's weed are very cold tolerant you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant bishop's weed in Amherst 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 bishop's weed and expect a good harvest is probably September. You probably don't want to wait any later than that or else your bishop's weed may not have a chance to fully mature. You can get started a little bit earlier by starting your bishop's weed indoors.

Last Frost Date

In Amherst the average date of last frost happens on April 15. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Amherst is just an average the actual date of last frost changes from year to year. Half of the time in Amherst there is a last frost after April 15 so always be ready to protect your bishop's weed if you have a surprise late frost.

USDA Zone Info for Amherst

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Amherst

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