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When to Plant Hemerocallis in Park Forest, IL

One of the first steps you take when you are figuring out your gardening schedule is find your 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 Park Forest can be reviewed to estimate when it's a good idea to plant hemerocallis.


Planting Calendar for Hemerocallis

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

Hemerocallis are moderately cold tolerant which means that you can plant them earlier than plants that are more sensitive to the cold.

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

The earliest that you can plant hemerocallis in Park Forest 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 hemerocallis and expect a good harvest is probably September. You probably don't want to wait any later than that or else your hemerocallis may not have a chance to really do well. If you are starting your hemerocallis 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 when the weather gets warmer is on April 15 in Park Forest. It might get as low as -15°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Park Forest and it is different every year. Since half of the time in Park Forest you get a frost after April 15 be ready to protect your hemerocallis in the event of a surprise late frost.

USDA Zone Info for Park Forest

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 Park Forest

You may be interested in your other planting guides for Park Forest.