frostdate name logo in white
frostdate name logo in white

When to Plant Veronica in Winthrop Harbor, IL

One of the first steps you take when you are determining your gardening schedule is find your 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 Winthrop Harbor should be reffered to in order to estimate when it's a good idea 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 are moderately cold tolerant which tells us that you can get them planted 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 Winthrop Harbor 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. If you wait any later than that and your veronica may not have a chance to grow to maturity. If you are starting your veronica indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Winthrop Harbor. You should expect an average low temperature of -15°F in the coldest months of winter.

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Winthrop Harbor and it can change quite a bit from year to year. Half of the time in Winthrop Harbor you get surprised by a frost after April 15 so make sure that you are ready to protect your veronica in the event of a surprise late frost.

USDA Zone Info for Winthrop Harbor

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 Winthrop Harbor

You may be interested in your other planting guides for Winthrop Harbor.