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

You should be able to estimate when you can plant purple coneflower by using the USDA zone info for Oakdale.

Planting Calendar for Purple Coneflower

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

Since purple coneflower are one of those plants that can tolerate a tiny bit of cold weather you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant purple coneflower in Oakdale 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 purple coneflower and expect a good harvest is probably September. If you wait any later than that and your purple coneflower may not have a chance to fully mature. You can get started a little bit earlier by starting your purple coneflower indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Oakdale. You can expect an average low temperature of 25°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Oakdale is an average and the actual date of last frost changes from year to year. Half of the time in Oakdale there is a last frost after February 15 so always be ready to cover your purple coneflower in the event of one of those late frosts.

USDA Zone Info for Oakdale

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 Oakdale

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