One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. 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 making a decision about when to plant schizanthus is to look at the USDA zone info for Mount Washington.

Planting Calendar for Schizanthus

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

You really shouldn't plant schizanthus until after the last frost because they require warm weather.

The earliest that you can plant schizanthus 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 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 fully mature. You can get started a couple of weeks earlier by starting your schizanthus indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Mount Washington. In the coldest months of winter you can expect an average low temperature of -5°F.

Remember that USDA zone info for Mount Washington is just an average and the actual date of last frost is different every year. Half of the time in Mount Washington it frosts late in the year after April 15 so just be sure to be ready to protect your schizanthus in the event of 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.