One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Larkspur you can estimate when it's the best time to plant stoneseed by checking out the USDA zone info.

Planting Calendar for Stoneseed

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

Since stoneseed do not do well in cold weather you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant stoneseed in Larkspur 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 stoneseed and expect a good harvest is probably September. Any later than that and your stoneseed may not have a chance to really do well. You can get started a couple of weeks earlier by starting your stoneseed indoors.

Last Frost Date

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

Since the USDA zone info for Larkspur is not always accurate the actual date of last frost will vary from year to year. Half of the time in Larkspur you get a frost after February 15 so be sure to be ready to cover your stoneseed in the event of one of those late frosts.

USDA Zone Info for Larkspur

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 Larkspur

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