Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Caldwell can be used to estimate when you can plant gayfeather.

Planting Calendar for Gayfeather

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

Gayfeather do well in cold which tells us that you can get them planted much earlier than other frost tender plants.

The earliest that you can plant gayfeather in Caldwell 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 gayfeather and expect a good harvest is probably September. Any later than that and your gayfeather may not have a chance to grow to maturity. If you are starting your gayfeather indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Caldwell the average date of last frost happens on April 15. It might get as low as -5°F during the coldest months of winter.

It's important to remember that USDA zone info for Caldwell 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 Caldwell you get surprised by a frost after April 15 so be sure to be ready to protect your gayfeather if you have a late frost.

USDA Zone Info for Caldwell

Here is the info for USDA Zone 6b.

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

Plants to Grow in Caldwell

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