One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of getting a good idea when to plant endive is to refer to the USDA zone info for Gypsum.

Planting Calendar for Endive

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

You can plant endive a bit earlier in the year because they do well in moderate cold.

The earliest that you can plant endive in Gypsum is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant endive and expect a good harvest is probably September. You probably don't want to wait any later than that or else your endive may not have a chance to grow to maturity. If you are starting your endive indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Gypsum. It might get as low as -20°F during the coldest months of winter.

Since the USDA zone info for Gypsum is just an average the actual date of last frost is different every year. Since half of the time in Gypsum you get surprised by a frost after April 15 be ready to protect your endive in the event of one of those late frosts.

USDA Zone Info for Gypsum

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Gypsum

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