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 common way of estimating when to plant spinach is to check out the USDA zone info for Eldorado.

Planting Calendar for Spinach

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

Spinach are moderately cold tolerant which tells us that you can plant them earlier than other plants that might not handle the cold.

The earliest that you can plant spinach in Eldorado 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 spinach and expect a good harvest is probably September. If you wait any later than that and your spinach may not have a chance to really do well. You can get started a couple of weeks earlier by starting your spinach indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Eldorado. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Eldorado is not always accurate the actual date of last frost will vary from year to year. Half of the time in Eldorado you get surprised by a frost after April 15 so always be ready to cover your spinach if you have one of those late frosts.

USDA Zone Info for Eldorado

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 Eldorado

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