The USDA Zone info is a great tool for gardeners to help us figure out your gardening 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 platycodon in Barrington can be figured out by referring to 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 do well in some cold which tells us that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant platycodon in Barrington 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 grow to maturity. If you are starting your platycodon indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

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

Since the USDA zone info for Barrington may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Barrington you get a frost after April 15 so just be sure to be ready to cover your platycodon if you have one of those late frosts.

USDA Zone Info for Barrington

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 Barrington

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