One of the first steps you take when you are estimating 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.

In Warsaw you can determine when it's the best time to plant platycodon by reviewing 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 are barely cold tolerant which means that you can get them planted just a bit earlier than other frost tender plants.

The earliest that you can plant platycodon in Warsaw 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. If you wait any later than that and your platycodon may not have a chance to really do well. You can get started a little bit earlier by starting your platycodon indoors.

Last Frost Date

In Warsaw the average date of last frost happens on April 15. You should expect an average low temperature of -15°F in the coldest months of winter.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Warsaw and it will vary from year to year. Half of the time in Warsaw you get a frost after April 15 so make sure that you are ready to protect your platycodon if you have a surprise late frost.

USDA Zone Info for Warsaw

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 Warsaw

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