The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to estimate when you can plant rudbeckia by referring to the USDA zone info for Ukiah.

Planting Calendar for Rudbeckia

Frost tolerance for rudbeckia:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant rudbeckia a little bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant rudbeckia in Ukiah 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 rudbeckia and expect a good harvest is probably October. You probably don't want to wait any later than that or else your rudbeckia may not have a chance to really do well. Starting your rudbeckia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Ukiah. It might get as low as 20°F during the coldest months of winter.

Remember that USDA zone info for Ukiah may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Ukiah last frost occurs after February 15 so always be ready to cover your rudbeckia if you have a surprise late frost.

USDA Zone Info for Ukiah

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Ukiah

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