The USDA Zone info is a great tool for gardeners to help us estimate 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.

In Clarendon Hills you can figure out when it's possible to plant sanvitalia by referring to the USDA zone info.

Planting Calendar for Sanvitalia

Frost tolerance for sanvitalia:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since sanvitalia are barely cold tolerant you can plant them just a tiny bit earlier in the year than other frost tender plants.

The earliest that you can plant sanvitalia in Clarendon Hills is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant sanvitalia and expect a good harvest is probably August. If you wait any later than that and your sanvitalia may not have a chance to fully mature. You can get started a little bit earlier by starting your sanvitalia indoors.

Last Frost Date

The average date of last frost is April 15 in Clarendon Hills. 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 Clarendon Hills is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Clarendon Hills you get surprised by a frost after April 15 so make sure that you are prepared to cover your sanvitalia in the event of one of those late frosts.

USDA Zone Info for Clarendon Hills

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 Clarendon Hills

You may be interested in your other planting guides for Clarendon Hills.