The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to determine when it's possible to plant evolvulus by looking at the USDA zone info for Rockford.

Planting Calendar for Evolvulus

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

Since evolvulus are not cold tolerant it is important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant evolvulus in Rockford 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 grow to maturity. You can get started a little bit earlier by starting your evolvulus indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Rockford is just an average and the actual date of last frost changes from year to year. Half of the time in Rockford it frosts late in the year after April 15 so make sure that you are prepared to cover your evolvulus in the event of a late frost.

USDA Zone Info for Rockford

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Rockford

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