The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Manchester you can determine when it's the best time to plant bishop's weed by reviewing 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 one of those plants that can tolerate quite a bit of cold weather you can plant them much earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant bishop's weed in Manchester 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. Any later than that and your bishop's weed may not have a chance to fully mature. You can get started a few weeks earlier by starting your bishop's weed indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Manchester. In the coldest months of winter you should expect an average low temperature of -15°F.

Keep in mind that USDA zone info for Manchester is just an average and the actual date of last frost will vary from year to year. Since half of the time in Manchester you get a frost after April 15 be ready to cover your bishop's weed in the event of one of those late frosts.

USDA Zone Info for Manchester

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Manchester

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