One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when you can plant yarrow is to refer to the USDA zone info for Los Angeles.

Planting Calendar for Yarrow

Frost tolerance for yarrow:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since yarrow are very cold tolerant you can plant them earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant yarrow in Los Angeles is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant yarrow and expect a good harvest is probably October. Any later than that and your yarrow may not have a chance to fully mature. You can get started a little bit earlier by starting your yarrow indoors.

Last Frost Date

On average the last frost has passed is on January 31 in Los Angeles. It might get as low as 35°F during the coldest months of winter.

Keep in mind that USDA zone info for Los Angeles may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Los Angeles there is a last frost after January 31 so just be sure to be ready to protect your yarrow if you have a late frost.

USDA Zone Info for Los Angeles

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Los Angeles

You may be interested in your other planting guides for Los Angeles.