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

You can figure out when you can plant schizanthus in Summit by looking at the USDA zone info.

Planting Calendar for Schizanthus

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

You really shouldn't plant schizanthus until after the last frost because they do not do well in cold weather.

The earliest that you can plant schizanthus in Summit 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. You probably don't want to wait any later than that or else your schizanthus may not have a chance to grow to maturity. If you are starting your schizanthus indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Since the USDA zone info for Summit is just an average the actual date of last frost changes from year to year. Half of the time in Summit last frost occurs after April 15 so always be ready to protect your schizanthus if you have one of those late frosts.

USDA Zone Info for Summit

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 Summit

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