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.

One way of making a decision about when it's possible to plant rudbeckia is to consult the USDA zone info for Shelbyville.

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 Shelbyville 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. Any later than that and your rudbeckia may not have a chance to fully mature. You can get started a little bit earlier by starting your rudbeckia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Shelbyville. It might get as low as -10°F during the coldest months of winter.

Always keep in mind that USDA zone info for Shelbyville may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Shelbyville you get surprised by a frost after April 15 be ready to protect your rudbeckia in the event of a late frost.

USDA Zone Info for Shelbyville

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Shelbyville

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