The USDA Zone info is a great tool for gardeners to help us determine 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.

A common way of getting a good idea when to plant schizanthus is to check out the USDA zone info for Northampton.

Planting Calendar for Schizanthus

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

It's probably not a good idea to plant schizanthus until after the last frost because they are not cold tolerant.

The earliest that you can plant schizanthus in Northampton 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 schizanthus and expect a good harvest is probably August. If you wait any later than that and your schizanthus may not have a chance to really do well. You can get started a few weeks earlier by starting your schizanthus indoors.

Last Frost Date

On average the last frost is on April 15 in Northampton. It might get as low as -10°F during the coldest months of winter.

Remember that USDA zone info for Northampton is an average and the actual date of last frost is different every year. Since half of the time in Northampton it frosts late in the year after April 15 be ready to cover your schizanthus in the event of a surprise late frost.

USDA Zone Info for Northampton

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 Northampton

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