The USDA Zone info is a great tool for gardeners to help us determine 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.

By reviewing the USDA zone info for Palo Alto it's a good idea to estimate when you can plant painted tongues.

Planting Calendar for Painted Tongues

Frost tolerance for painted tongues:	Not tolerant of frost.
When to plant:	After the last frost.

Since painted tongues do not do well in cold weather it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant painted tongues in Palo Alto 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 painted tongues and expect a good harvest is probably September. Any later than that and your painted tongues may not have a chance to grow to maturity. You can get started a little bit earlier by starting your painted tongues indoors.

Last Frost Date

The average date of last frost is February 15 in Palo Alto. In the coldest months of winter you can expect an average low temperature of 25°F.

It's important to remember that USDA zone info for Palo Alto is just an average and the actual date of last frost changes from year to year. Half of the time in Palo Alto there is a last frost after February 15 so always be ready to cover your painted tongues in the event of one of those late frosts.

USDA Zone Info for Palo Alto

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 Palo Alto

You may be interested in your other planting guides for Palo Alto.