Rudbeckia hirta aka Blackeyed Susan

Taxonomy ID: 6368

Rudbeckia hirta, also known as black-eyed Susan, is a North American flowering plant in the aster family. It is native to Eastern and Central North America and has become naturalized in the Western part of the continent, as well as in China. This popular wildflower is the state flower of Maryland and can be found in all 10 Canadian Provinces and all 48 contiguous states in the US. The plant can grow over 3 feet tall, with leaves of 6 inches, stalks over 8 inches long, and flowers with a diameter of 2 to 3 inches. The "black eye" refers to the dark, brown-purple centers of its daisy-like flower heads. Butterflies, bees, and other insects are attracted to the flowers for the nectar, aiding in pollination. These plants bloom from June to October and tend to be territorial, squeezing out other flowers growing near them. While they are invasive in many tropical areas, including Hawaii and Mexico, black-eyed Susans are relatively rare as houseplants. They are easy to grow and require regular watering, thriving best in long-lasting direct light and being within 1 foot of a window.

Common names

Blackeyed Susan, Hairy Coneflower, Black Eyed Susan

More information about Blackeyed Susan

How difficult is it to take care of Blackeyed Susan

Even if you don't have a green thumb, you can successfully care for Blackeyed Susan due to its easy-going nature.

What is the growth pattern and size of Blackeyed Susan?

Blackeyed Susan grows vertically and new growth emerges from the top of the plant.

What is the region of origin of Blackeyed Susan

Blackeyed Susan’s native range is N. America. An occasional garden escape in Britain[17].

What are the water needs for Blackeyed Susan

Blackeyed Susan should be watered regularly, allowing the soil to dry out between waterings.

What is the right soil for Blackeyed Susan

Blackeyed Susan loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.

What is the sunlight requirement for Blackeyed Susan

To ensure optimal growth, the Blackeyed Susan prefers bright diffused light for 6-8 hours each day. Insufficient light can result in slow growth and leaf drop, so it's important to find a well-lit location for this plant. Place it near a window, within a distance of 1 meter (3 feet), to enhance its potential for thriving.

How to fertilize Blackeyed Susan

Repotting the Blackeyed Susan is necessary either when it has doubled in size or once every year, whichever happens first. With fresh potting soil replenished annually, the plant will receive all the necessary nutrients, rendering the use of fertilizer unnecessary. Keep in mind that the source of a plant's energy is the sun, not fertilizer.

Is Blackeyed Susan toxic to humans/pets?

The toxicity level of this plant has not been officially confirmed by Ploi. If there is a possibility of ingestion of plant material with an uncertain toxicity by you, a family member, or a pet, it is advisable to seek the assistance of a medical professional.

More info:
Wikipedia