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.

In Presidio you can figure out when it's a good idea to plant shallots by using the USDA zone info.

Planting Calendar for Shallots

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

Shallots are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can start planting them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant shallots in Presidio 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 shallots and expect a good harvest is probably September. If you wait any later than that and your shallots may not have a chance to grow to maturity. Starting your shallots indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Presidio the average date of last frost happens on February 15. You should expect an average low temperature of 20°F in the coldest months of winter.

Always keep in mind that USDA zone info for Presidio is not always accurate and the actual date of last frost is different every year. Half of the time in Presidio it frosts late in the year after February 15 so make sure that you are prepared to cover your shallots in the event of a late frost.

USDA Zone Info for Presidio

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°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 25°F.

Plants to Grow in Presidio

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