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.

By using the USDA zone info for Woburn you should be able to figure out when it's the best time to plant amaranthus.

Planting Calendar for Amaranthus

Frost tolerance for amaranthus:	Not tolerant of frost.
When to plant:	After the last frost.

Since amaranthus do not do well in cold weather you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant amaranthus 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 amaranthus and expect a good harvest is probably August. Any later than that and your amaranthus may not have a chance to grow to maturity. Starting your amaranthus indoors is a great way to get them started a little bit earlier.

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 just an average and the actual date of last frost changes from year to year. Half of the time in Woburn it frosts late in the year after April 15 so just be sure to be ready to protect your amaranthus in the event of a surprise late frost.

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.