Before planting it is a good idea to find your USDA Zone info to determine 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 Palos Hills you can figure out when it's a good idea to plant bittercress by referring to the USDA zone info.

Planting Calendar for Bittercress

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

You can plant bittercress a bit earlier in the year because they are one of those plants that can tolerate a tiny bit of cold weather.

The earliest that you can plant bittercress in Palos Hills 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 bittercress and expect a good harvest is probably August. Any later than that and your bittercress may not have a chance to grow to maturity. If you are starting your bittercress indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Palos Hills. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Palos Hills may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Palos Hills there is a last frost after April 15 so make sure that you are ready to protect your bittercress if you have a late frost.

USDA Zone Info for Palos Hills

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 Palos Hills

You may be interested in your other planting guides for Palos Hills.