Rudbeckia hirta aka Blackeyed Susan
Taxonomy
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 SusanHow to care for Blackeyed Susan
Difficulty
Even if you don't have a green thumb, you can successfully care for Blackeyed Susan due to its easy-going nature.
Water
Blackeyed Susan should be watered regularly, allowing the soil to dry out between waterings.
Soil
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.
Lighting
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.
Toxicity
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.
Fertilizer
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.
Growth-pattern
Blackeyed Susan grows vertically and new growth emerges from the top of the plant.
Region of origin
Blackeyed Susan’s native range is N. America. An occasional garden escape in Britain[17].
More info:
Wikipedia
More Species in Rudbeckia Genus

Rudbeckia fulgida Black Eyed Susan

Rudbeckia laciniata Cutleaf Coneflower

Rudbeckia californica California Coneflower

Rudbeckia maxima Cabbage Coneflower

Rudbeckia subtomentosa Sweet Coneflower

Rudbeckia texana Texas Coneflower

Rudbeckia triloba Brown Eyed Susan

Rudbeckia hirta Blackeyed Susan
