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 Wauseon you can determine when to plant catharanthus by referring to the USDA zone info.

Planting Calendar for Catharanthus

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

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

The earliest that you can plant catharanthus in Wauseon 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. Any later than that and your catharanthus may not have a chance to fully mature. If you are starting your catharanthus indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Wauseon. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Wauseon is not always accurate the actual date of last frost is different every year. Half of the time in Wauseon it frosts late in the year after April 15 so just be sure to be ready to cover your catharanthus if you have one of those late frosts.

USDA Zone Info for Wauseon

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 Wauseon

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