One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to figure out when it's the best time to plant potatos by reviewing the USDA zone info for Presidio.

Planting Calendar for Potatos

Frost tolerance for potatos:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Potatos do well in a bit of cold which means that you can plant them earlier in the year than more sensitive plants.

The earliest that you can plant potatos in Presidio is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant potatos and expect a good harvest is probably October. Any later than that and your potatos may not have a chance to fully mature. You can get started a little bit earlier by starting your potatos indoors.

Last Frost Date

The average date of last frost is February 15 in Presidio. You can expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Presidio is an average 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 be sure to be ready to cover your potatos if you have one of those late frosts.

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.