One of the best tools that you have as gardeners to help us estimate 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.

One way of figuring out when it's possible to plant hypericum is to consult the USDA zone info for Casselberry.

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 are barely cold tolerant which tells us that you can start planting them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant hypericum in Casselberry 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 hypericum and expect a good harvest is probably September. You probably don't want to wait any later than that or else your hypericum may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your hypericum indoors.

Last Frost Date

The average date of last frost is February 15 in Casselberry. You should expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that USDA zone info for Casselberry is an average and the actual date of last frost is different every year. Half of the time in Casselberry you get surprised by a frost after February 15 so make sure that you are prepared to protect your hypericum in the event of one of those late frosts.

USDA Zone Info for Casselberry

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Casselberry

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