Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Los Altos you will be able to determine when you can plant zucchini.

Planting Calendar for Zucchini

Frost tolerance for zucchini:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since zucchini do not do well in cold weather it is important to wait until after the last frost before you can plant them.

The earliest that you can plant zucchini in Los Altos 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 zucchini and expect a good harvest is probably September. If you wait any later than that and your zucchini may not have a chance to fully mature. If you are starting your zucchini indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Los Altos the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Los Altos and it changes from year to year. Since half of the time in Los Altos you get surprised by a frost after February 15 be ready to protect your zucchini in the event of one of those late frosts.

USDA Zone Info for Los Altos

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 Los Altos

You may be interested in your other planting guides for Los Altos.