One of the best tools that you have as gardeners to help us figure out 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 Smithfield you can estimate when it's the best time to plant evolvulus by checking out the USDA zone info.

Planting Calendar for Evolvulus

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

You should not plant evolvulus until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant evolvulus in Smithfield 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 evolvulus and expect a good harvest is probably August. You probably don't want to wait any later than that or else your evolvulus may not have a chance to really do well. You can get started a couple of weeks earlier by starting your evolvulus indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Smithfield. In the coldest months of winter you should expect an average low temperature of 10°F.

Always keep in mind that USDA zone info for Smithfield is just an average and the actual date of last frost is different every year. Since half of the time in Smithfield you get surprised by a frost after March 15 be ready to cover your evolvulus in the event of a late frost.

USDA Zone Info for Smithfield

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Smithfield

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