One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first chance to plant achimenes in Woburn can be figured out by looking at the USDA zone info.

Planting Calendar for Achimenes

Frost tolerance for achimenes:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since achimenes are not cold tolerant you have to wait until after the last frost has passed before you can plant them.

The earliest that you can plant achimenes in Woburn is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant achimenes and expect a good harvest is probably August. Any later than that and your achimenes may not have a chance to really do well. You can get started a little bit earlier by starting your achimenes indoors.

Last Frost Date

The average date of last frost is April 15 in Woburn. It might get as low as -10°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Woburn is an average and the actual date of last frost is different every year. Since half of the time in Woburn you get a frost after April 15 be ready to protect your achimenes if you have one of those late frosts.

USDA Zone Info for Woburn

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 Woburn

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