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.

The best time to plant strawflowers in Riverbank can be figured out by reviewing the USDA zone info.

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.

Strawflowers do ok in moderate cold which tells us that you can start planting them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant strawflowers in Riverbank 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. If you wait any later than that and your strawflowers may not have a chance to fully mature. You can get started a little bit earlier by starting your strawflowers indoors.

Last Frost Date

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

Since the USDA zone info for Riverbank may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Riverbank last frost occurs after February 15 be ready to cover your strawflowers if you have one of those late frosts.

USDA Zone Info for Riverbank

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 Riverbank

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