Before planting it is a good idea to find your USDA Zone info to estimate 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.

A way of making a decision about when to plant endive is to refer to the USDA zone info for Cambridge.

Planting Calendar for Endive

Frost tolerance for endive:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since endive are moderately cold tolerant you can plant them just a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant endive in Cambridge 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 endive and expect a good harvest is probably August. You probably don't want to wait any later than that or else your endive may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your endive indoors.

Last Frost Date

The average date of last frost is May 15 in Cambridge. In the coldest months of winter you should expect an average low temperature of -30°F.

Since the USDA zone info for Cambridge is not always accurate the actual date of last frost is different every year. Since half of the time in Cambridge there is a last frost after May 15 be ready to cover your endive if you have one of those late frosts.

USDA Zone Info for Cambridge

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Cambridge

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