One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. 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 it's the best time to plant scallions is to check out the USDA zone info for El Mirage.

Planting Calendar for Scallions

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

You can plant scallions a bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant scallions in El Mirage 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 scallions and expect a good harvest is probably September. Any later than that and your scallions may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your scallions indoors.

Last Frost Date

The average date of last frost is February 15 in El Mirage. You should expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that USDA zone info for El Mirage is not always accurate and the actual date of last frost is different every year. Half of the time in El Mirage you get a frost after February 15 so make sure that you are prepared to cover your scallions if you have a late frost.

USDA Zone Info for El Mirage

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

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

Plants to Grow in El Mirage

You may be interested in your other planting guides for El Mirage.