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.

It's possible to estimate when to plant rudbeckia by looking at the USDA zone info for El Reno.

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 one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant rudbeckia in El Reno 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 rudbeckia and expect a good harvest is probably September. 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 little bit earlier.

Last Frost Date

In El Reno the average date of last frost happens on April 15. It might get as low as 0°F during the coldest months of winter.

It's important to remember that USDA zone info for El Reno is not always accurate and the actual date of last frost will vary from year to year. Half of the time in El Reno you get surprised by a frost after April 15 so make sure that you are prepared to protect your rudbeckia if you have one of those late frosts.

USDA Zone Info for El Reno

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in El Reno

You may be interested in your other planting guides for El Reno.