The USDA Zone info is a great tool for gardeners to help us figure out 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 making a decision about when to plant pearl onions is to consult the USDA zone info for Fairfield.

Planting Calendar for Pearl onions

Frost tolerance for pearl onions:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since pearl onions do ok in moderate cold you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant pearl onions in Fairfield 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 pearl onions and expect a good harvest is probably August. If you wait any later than that and your pearl onions may not have a chance to really do well. Starting your pearl onions indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Fairfield. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Fairfield may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Fairfield you get surprised by a frost after April 15 so make sure that you are ready to cover your pearl onions if you have one of those late frosts.

USDA Zone Info for Fairfield

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Fairfield

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