Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to estimate when it's possible to plant echinacea by looking at the USDA zone info for Windsor Heights.

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 start planting them slightly earlier than other frost tender plants.

The earliest that you can plant echinacea in Windsor Heights 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 fully mature. Starting your echinacea indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Windsor Heights. It might get as low as 5°F during the coldest months of winter.

Since the USDA zone info for Windsor Heights is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Windsor Heights it frosts late in the year after April 15 so make sure that you are prepared to cover your echinacea if you have a late frost.

USDA Zone Info for Windsor Heights

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Windsor Heights

You may be interested in your other planting guides for Windsor Heights.