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

In Richmond Hill you can figure out when you can plant evolvulus by referring to 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.

It's not a good idea to plant evolvulus until after the last frost because they require warm weather.

The earliest that you can plant evolvulus in Richmond Hill 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. Any later than that and your evolvulus may not have a chance to fully mature. Starting your evolvulus indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Richmond Hill. You can expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Richmond Hill may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Richmond Hill there is a last frost after March 15 be ready to cover your evolvulus if you have one of those late frosts.

USDA Zone Info for Richmond Hill

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 Richmond Hill

You may be interested in your other planting guides for Richmond Hill.