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 Quincy you can figure out when it's the best time to plant catharanthus by checking out 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 can not plant catharanthus until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant catharanthus in Quincy 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. Starting your catharanthus indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Quincy. In the coldest months of winter you should expect an average low temperature of 15°F.

Remember that USDA zone info for Quincy is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Quincy there is a last frost after March 15 be ready to protect your catharanthus if you have a late frost.

USDA Zone Info for Quincy

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Quincy

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