Before planting it is a good idea to find your USDA Zone info to figure out 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.

In Windsor you can estimate when to plant echinacea by looking at the USDA zone info.

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 means that you can plant them slightly earlier than more sensitive plants.

The earliest that you can plant echinacea in Windsor 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 few weeks earlier by starting your echinacea indoors.

Last Frost Date

The average date of last frost is April 15 in Windsor. You should expect an average low temperature of -15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Windsor is just an average and the actual date of last frost changes from year to year. Half of the time in Windsor you get surprised by a frost after April 15 so be sure to be ready to protect your echinacea if you have a surprise late frost.

USDA Zone Info for Windsor

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 Windsor

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