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

You can determine when it's possible to plant chrysocephalum in Hayden by using the USDA zone info.

Planting Calendar for Chrysocephalum

Frost tolerance for chrysocephalum:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's not a good idea to plant chrysocephalum until after the last frost because they are not cold tolerant.

The earliest that you can plant chrysocephalum in Hayden is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant chrysocephalum and expect a good harvest is probably August. If you wait any later than that and your chrysocephalum may not have a chance to really do well. You can get started a couple of weeks earlier by starting your chrysocephalum indoors.

Last Frost Date

On average the last frost is on April 15 in Hayden. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Hayden is just an average the actual date of last frost changes from year to year. Since half of the time in Hayden there is a last frost after April 15 be ready to protect your chrysocephalum in the event of a surprise late frost.

USDA Zone Info for Hayden

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 Hayden

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