One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Cheney you can estimate when you can plant catharanthus by using the USDA zone info.

Planting Calendar for Catharanthus

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

You should not plant catharanthus until after the last frost because they require warm weather.

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

Last Frost Date

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

It's important to remember that USDA zone info for Cheney is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Cheney it frosts late in the year after April 15 be ready to protect your catharanthus in the event of one of those late frosts.

USDA Zone Info for Cheney

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 Cheney

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