One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Stillwater can be used to figure out when it's the best time to plant veronica.

Planting Calendar for Veronica

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

Veronica do well in some cold which tells us that you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant veronica 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 veronica and expect a good harvest is probably August. If you wait any later than that and your veronica may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your veronica indoors.

Last Frost Date

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

Remember that USDA zone info for Stillwater is just an average and the actual date of last frost changes from year to year. Half of the time in Stillwater you get surprised by a frost after May 15 so make sure that you are ready to protect your veronica in the event of a late frost.

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.