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.

One way of determining when it's a good idea to plant guara is to use the USDA zone info for Northfield.

Planting Calendar for Guara

Frost tolerance for guara:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since guara are not cold tolerant it is important to wait until after the last frost before you can plant them.

The earliest that you can plant guara in Northfield is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant guara and expect a good harvest is probably August. Any later than that and your guara may not have a chance to grow to maturity. If you are starting your guara indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Northfield. You should expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Northfield is not always accurate the actual date of last frost will vary from year to year. Half of the time in Northfield last frost occurs after May 15 so just be sure to be ready to cover your guara in the event of one of those late frosts.

USDA Zone Info for Northfield

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Northfield

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