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

By reviewing the USDA zone info for Richfield it's possible to figure out when it's the best time to plant aurinia.

Planting Calendar for Aurinia

Frost tolerance for aurinia:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant aurinia much earlier in the year because they are very cold tolerant.

The earliest that you can plant aurinia in Richfield is February. However, you really should wait until March if you don't want to take any chances.

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

Last Frost Date

On average all chance of frost has passed is on April 15 in Richfield. You can expect an average low temperature of -10°F in the coldest months of winter.

It's important to remember that USDA zone info for Richfield may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Richfield you get surprised by a frost after April 15 so make sure that you are prepared to cover your aurinia if you have one of those late frosts.

USDA Zone Info for Richfield

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 Richfield

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