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

A way of estimating when it's possible to plant monarda is to consult the USDA zone info for Vernal.

Planting Calendar for Monarda

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

Monarda are barely cold tolerant which means that you can get them planted just a bit earlier than plants that are more sensitive to the cold.

The earliest that you can plant monarda in Vernal 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 monarda and expect a good harvest is probably August. Any later than that and your monarda may not have a chance to really do well. You can get started a little bit earlier by starting your monarda indoors.

Last Frost Date

The average date of last frost is April 15 in Vernal. In the coldest months of winter you should expect an average low temperature of -15°F.

Always keep in mind that USDA zone info for Vernal may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Vernal you get a frost after April 15 so just be sure to be ready to protect your monarda in the event of a late frost.

USDA Zone Info for Vernal

Here is the info for USDA Zone 5b.

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

Plants to Grow in Vernal

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