Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Humboldt you will be able to estimate when it's a good idea to plant endive.

Planting Calendar for Endive

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

Endive do well in mild cold which tells us that you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant endive in Humboldt 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. If you wait any later than that and your endive may not have a chance to fully mature. You can get started a few weeks earlier by starting your endive indoors.

Last Frost Date

The average date of last frost is April 15 in Humboldt. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Humboldt is just an average the actual date of last frost is different every year. Since half of the time in Humboldt you get a frost after April 15 be ready to protect your endive if you have a surprise late frost.

USDA Zone Info for Humboldt

Here is the info for USDA Zone 7a.

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

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

Plants to Grow in Humboldt

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