One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant potatos in Manteca should be determined by checking out the USDA zone info.

Planting Calendar for Potatos

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

Since potatos do well in cold you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant potatos in Manteca 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. If you wait 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 Manteca. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Manteca is an average the actual date of last frost is different every year. Half of the time in Manteca you get a frost after February 15 so just be sure to be ready to protect your potatos if you have one of those late frosts.

USDA Zone Info for Manteca

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 Manteca

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