Before planting it is a good idea to find your USDA Zone info to figure out 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.

You will be able to estimate when to plant strawflowers by using the USDA zone info for Walnut Creek.

Planting Calendar for Strawflowers

Frost tolerance for strawflowers:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since strawflowers are barely cold tolerant you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant strawflowers in Walnut Creek is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant strawflowers and expect a good harvest is probably September. You probably don't want to wait any later than that or else your strawflowers may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your strawflowers indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Walnut Creek. In the coldest months of winter you can expect an average low temperature of 25°F.

Always keep in mind that USDA zone info for Walnut Creek is not always accurate and the actual date of last frost is different every year. Half of the time in Walnut Creek last frost occurs after February 15 so just be sure to be ready to protect your strawflowers if you have a 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.