One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Owasso can be used to figure out when to plant monarda.

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.

Since monarda do ok in moderate cold you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant monarda in Owasso 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 fully mature. Starting your monarda indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Owasso the average date of last frost happens on April 15. You should expect an average low temperature of 0°F in the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Owasso and it can change quite a bit from year to year. Half of the time in Owasso there is a last frost after April 15 so make sure that you are prepared to cover your monarda if you have a late frost.

USDA Zone Info for Owasso

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Owasso

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