When to Plant Platycodon in Vandalia, 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.

In Vandalia you can figure out when it's a good idea to plant platycodon by looking at the USDA zone info.

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Planting Calendar for Platycodon

Frost tolerance for platycodon: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

Platycodon do well in mild cold which means that you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

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

The earliest that you can plant platycodon in Vandalia 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 platycodon and expect a good harvest is probably August. Any later than that and your platycodon may not have a chance to fully mature. Starting your platycodon indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Vandalia. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Vandalia is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Vandalia you get a frost after April 15 be ready to protect your platycodon in the event of a late frost.

USDA Zone Info for Vandalia

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-10°F
Highest Expected Low-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Vandalia

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