Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of figuring out when it's possible to plant tagetes is to use the USDA zone info for Walnut Creek.

Planting Calendar for Tagetes

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

It's a bad idea to plant tagetes until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant tagetes in Walnut Creek 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 tagetes and expect a good harvest is probably September. If you wait any later than that and your tagetes may not have a chance to really do well. If you are starting your tagetes indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Walnut Creek. It might get as low as 25°F during the coldest months of winter.

It's important to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Walnut Creek and it changes from year to year. Since half of the time in Walnut Creek you get surprised by a frost after February 15 be ready to cover your tagetes in the event of a surprise late frost.

USDA Zone Info for Walnut Creek

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 Walnut Creek

You may be interested in your other planting guides for Walnut Creek.