When to Plant Veronica in Willowbrook, IL

Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of getting a good idea when it's a good idea to plant veronica is to consult the USDA zone info for Willowbrook.


Planting Calendar for Veronica

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

Veronica are moderately cold tolerant which tells us that you can plant them a little bit earlier than other frost tender plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant veronica
Possibly ok, but a risky time to plant veronica
Probably not a good time to plant veronica

The earliest that you can plant veronica in Willowbrook is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant veronica and expect a good harvest is probably September. You probably don't want to wait any later than that or else your veronica may not have a chance to really do well. If you are starting your veronica indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Willowbrook and it can change quite a bit from year to year. Since half of the time in Willowbrook you get surprised by a frost after April 15 be ready to cover your veronica if you have a late frost.

USDA Zone Info for Willowbrook

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-15°F
Highest Expected Low-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Willowbrook

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