One of the best tools that you have as gardeners to help us estimate 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.

A common way of figuring out when it's possible to plant amaranthus is to refer to the USDA zone info for Mount Washington.

Planting Calendar for Amaranthus

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

Amaranthus do not do well in cold weather which tells us that it is important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant amaranthus in Mount Washington 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. If you wait any later than that and your amaranthus may not have a chance to grow to maturity. You can get started a little bit earlier by starting your amaranthus indoors.

Last Frost Date

On average the last frost is on April 15 in Mount Washington. It might get as low as -5°F during the coldest months of winter.

Keep in mind that USDA zone info for Mount Washington is not always accurate and the actual date of last frost changes from year to year. Half of the time in Mount Washington you get a frost after April 15 so make sure that you are prepared to cover your amaranthus if you have one of those late frosts.

USDA Zone Info for Mount Washington

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Mount Washington

You may be interested in your other planting guides for Mount Washington.