One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to determine when it's the best time to plant hypericum by looking at the USDA zone info for Eureka.

Planting Calendar for Hypericum

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

You can plant hypericum a bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant hypericum in Eureka 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 hypericum and expect a good harvest is probably August. Any later than that and your hypericum may not have a chance to grow to maturity. Starting your hypericum indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Eureka. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Eureka is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Eureka there is a last frost after April 15 so make sure that you are prepared to protect your hypericum in the event of a late frost.

USDA Zone Info for Eureka

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Eureka

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