One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of determining when to plant rudbeckia is to refer to the USDA zone info for Lake Havasu City.

Planting Calendar for Rudbeckia

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

Since rudbeckia are one of those plants that can tolerate a little bit of cold weather you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant rudbeckia in Lake Havasu City 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. If you wait any later than that and your rudbeckia may not have a chance to fully mature. If you are starting your rudbeckia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on January 31 in Lake Havasu City. It might get as low as 30°F during the coldest months of winter.

It's important to remember that USDA zone info for Lake Havasu City is just an average and the actual date of last frost changes from year to year. Half of the time in Lake Havasu City you get a frost after January 31 so just be sure to be ready to protect your rudbeckia if you have one of those late frosts.

USDA Zone Info for Lake Havasu City

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Lake Havasu City

You may be interested in your other planting guides for Lake Havasu City.