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.

The USDA zone info for Yankton should be read to estimate when it's a good idea to plant monkey flower.

Planting Calendar for Monkey Flower

Frost tolerance for monkey flower:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Monkey Flower do not do well in cold weather which means that it's important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant monkey flower in Yankton 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 monkey flower and expect a good harvest is probably August. If you wait any later than that and your monkey flower may not have a chance to fully mature. If you are starting your monkey flower indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Yankton the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -20°F.

Remember that USDA zone info for Yankton may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Yankton you get surprised by a frost after April 15 so just be sure to be ready to protect your monkey flower in the event of a surprise late frost.

USDA Zone Info for Yankton

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Yankton

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