One of the best tools that you have as gardeners to help us estimate 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.

A way of estimating when it's a good idea to plant pansies is to consult the USDA zone info for Stillwater.

Planting Calendar for Pansies

Frost tolerance for pansies:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Pansies tend to make it in pretty solid cold which means that you can plant them earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant pansies in Stillwater 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 pansies and expect a good harvest is probably August. You probably don't want to wait any later than that or else your pansies may not have a chance to really do well. Starting your pansies indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Stillwater. You should expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Stillwater is not always accurate the actual date of last frost will vary from year to year. Half of the time in Stillwater you get surprised by a frost after May 15 so always be ready to protect your pansies if you have one of those late frosts.

USDA Zone Info for Stillwater

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 Stillwater

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