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When to Plant Forget-Me-Not in Willowbrook, IL

Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant forget-me-not in Willowbrook can be figured out by using the USDA zone info.


Planting Calendar for Forget-Me-Not

Frost tolerance for forget-me-not: Tolerant of some frost.
When to plant: Up to 5 weeks before last frost.

Forget-Me-Not tend to make it in moderate cold which means that you can plant them a little bit earlier in the year than other frost tender plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant forget-me-not
Possibly ok, but a risky time to plant forget-me-not
Probably not a good time to plant forget-me-not

The earliest that you can plant forget-me-not 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 forget-me-not and expect a good harvest is probably September. If you wait any later than that and your forget-me-not may not have a chance to grow to maturity. If you are starting your forget-me-not indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Willowbrook. It might get as low as -15°F during the coldest months of winter.

It's important to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Willowbrook and it can change quite a bit from year to year. Half of the time in Willowbrook there is a last frost after April 15 so always be ready to protect your forget-me-not in the event of one of those late frosts.

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.