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 should be able to figure out when it's the best time to plant schizanthus by checking out the USDA zone info for Jefferson.

Planting Calendar for Schizanthus

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

It's a bad idea to plant schizanthus until after all chance of frost has passed because they are not cold tolerant.

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

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Jefferson. In the coldest months of winter you should expect an average low temperature of 10°F.

Since the USDA zone info for Jefferson is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Jefferson it frosts late in the year after March 15 be ready to cover your schizanthus if you have a late frost.

USDA Zone Info for Jefferson

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Jefferson

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