One of the first steps you take when you are getting a good idea 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.

In Hales Corners you can figure out when it's the best time to plant platycodon by looking at the USDA zone info.

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 can survive in very little cold which tells us that you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant platycodon in Hales Corners 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. You probably don't want to wait any later than that or else your platycodon may not have a chance to really do well. Starting your platycodon indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Hales Corners the average date of last frost happens on April 15. It might get as low as -15°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Hales Corners may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Hales Corners there is a last frost after April 15 be ready to protect your platycodon in the event of a surprise late frost.

USDA Zone Info for Hales Corners

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 Hales Corners

You may be interested in your other planting guides for Hales Corners.