One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Sierra Vista should be used to figure out when you can plant hypericum.

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.

Hypericum can survive in some cold which means that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant hypericum in Sierra Vista 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. If you wait any later than that and your hypericum may not have a chance to really do well. 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 March 15 in Sierra Vista. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Sierra Vista may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Sierra Vista last frost occurs after March 15 so be sure to be ready to protect your hypericum in the event of a surprise late frost.

USDA Zone Info for Sierra Vista

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Sierra Vista

You may be interested in your other planting guides for Sierra Vista.