The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant schizanthus in Colville can be estimated by checking out the USDA zone info.

Planting Calendar for Schizanthus

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

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

The earliest that you can plant schizanthus in Colville 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 really do well. You can get started a little bit earlier by starting your schizanthus indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Colville. You should expect an average low temperature of -10°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Colville may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Colville you get a frost after April 15 be ready to cover your schizanthus if you have a late frost.

USDA Zone Info for Colville

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 Colville

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