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.

In Lathrop you can figure out when it's the best time to plant zucchini by referring to the USDA zone info.

Planting Calendar for Zucchini

Frost tolerance for zucchini:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You really shouldn't plant zucchini until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant zucchini in Lathrop 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. You probably don't want to wait any later than that or else your zucchini may not have a chance to really do well. If you are starting your zucchini indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Lathrop. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Lathrop is an average the actual date of last frost is different every year. Half of the time in Lathrop last frost occurs after February 15 so just be sure to be ready to cover your zucchini in the event of a surprise late frost.

USDA Zone Info for Lathrop

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 Lathrop

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