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

In Chisholm you can determine when it's a good idea to plant oregano by looking at the USDA zone info.

Planting Calendar for Oregano

Frost tolerance for oregano:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant oregano just a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant oregano in Chisholm 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 oregano and expect a good harvest is probably August. You probably don't want to wait any later than that or else your oregano may not have a chance to fully mature. You can get started a little bit earlier by starting your oregano indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Chisholm. It might get as low as -35°F during the coldest months of winter.

Since the USDA zone info for Chisholm is an average the actual date of last frost changes from year to year. Half of the time in Chisholm it frosts late in the year after May 15 so always be ready to protect your oregano in the event of a late frost.

USDA Zone Info for Chisholm

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Chisholm

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