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

In Hazleton you can estimate when it's a good idea to plant catharanthus by looking at 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.

Since catharanthus are not cold tolerant it's important to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant catharanthus in Hazleton 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. You can get started a couple of weeks earlier by starting your catharanthus indoors.

Last Frost Date

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

Since the USDA zone info for Hazleton is an average the actual date of last frost changes from year to year. Half of the time in Hazleton it frosts late in the year after April 15 so make sure that you are ready to protect your catharanthus in the event of a late frost.

USDA Zone Info for Hazleton

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 Hazleton

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