The USDA Zone info is a great tool for gardeners to help us estimate 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.

In Palos Heights you can determine when it's the best time to plant trifolium by checking out the USDA zone info.

Planting Calendar for Trifolium

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

Trifolium are barely cold tolerant which means that you can get them planted just a bit earlier than other plants that might not handle the cold.

The earliest that you can plant trifolium in Palos Heights 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 trifolium and expect a good harvest is probably August. If you wait any later than that and your trifolium may not have a chance to grow to maturity. You can get started a little bit earlier by starting your trifolium indoors.

Last Frost Date

The average date of last frost is April 15 in Palos Heights. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Palos Heights may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Palos Heights there is a last frost after April 15 so make sure that you are prepared to cover your trifolium in the event of one of those late frosts.

USDA Zone Info for Palos Heights

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 Heights

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