The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of determining when to plant hypericum is to look at the USDA zone info for Monticello.

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 do well in very little cold which means that you can plant them slightly earlier in the year than other plants that might not handle the cold.

The earliest that you can plant hypericum in Monticello 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 hypericum and expect a good harvest is probably August. Any later than that and your hypericum may not have a chance to fully mature. You can get started a little bit earlier by starting your hypericum indoors.

Last Frost Date

The average date of last frost is May 15 in Monticello. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Monticello may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Monticello last frost occurs after May 15 be ready to protect your hypericum if you have a surprise late frost.

USDA Zone Info for Monticello

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Monticello

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