The USDA Zone info is a great tool for gardeners to help us determine 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 USDA zone info for Suffern should be read to figure out when it's possible to plant trifolium.

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.

You can plant trifolium just a tiny 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 trifolium in Suffern 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 few weeks earlier by starting your trifolium indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Suffern. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Suffern is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Suffern it frosts late in the year after April 15 so always be ready to cover your trifolium if you have a surprise late frost.

USDA Zone Info for Suffern

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Suffern

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