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

One way of estimating when it's the best time to plant echinacea is to check out the USDA zone info for Richland.

Planting Calendar for Echinacea

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

Echinacea do ok in moderate cold which tells us that you can get them planted just a bit earlier than other plants that might not handle the cold.

The earliest that you can plant echinacea in Richland 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 echinacea and expect a good harvest is probably August. You probably don't want to wait any later than that or else your echinacea may not have a chance to really do well. You can get started a little bit earlier by starting your echinacea indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Richland. In the coldest months of winter you can expect an average low temperature of 0°F.

It's important to remember that USDA zone info for Richland may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Richland you get surprised by a frost after April 15 be ready to cover your echinacea in the event of one of those late frosts.

USDA Zone Info for Richland

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Richland

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