Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Robinson it's possible to figure out when it's the best time to plant evolvulus.

Planting Calendar for Evolvulus

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

You can not plant evolvulus until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant evolvulus in Robinson 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 fully mature. You can get started a few weeks earlier by starting your evolvulus indoors.

Last Frost Date

The average date of last frost is April 15 in Robinson. It might get as low as -10°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Robinson is not always accurate and the actual date of last frost changes from year to year. Half of the time in Robinson you get surprised by a frost after April 15 so just be sure to be ready to protect your evolvulus in the event of one of those late frosts.

USDA Zone Info for Robinson

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 Robinson

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