black-eyed susans

Black-Eyed Susans Growing & Care Guide

With their sunny disposition and striking appearance, Black-Eyed Susans (Rudbeckia hirta) have become cherished stars in gardens around the world. These resilient and captivating perennial flowers captivate our hearts with their vibrant colors and add a touch of wild, natural beauty to any landscape.

In this article, we embark on a journey to explore the enchanting world of Black-Eyed Susans. From their unique features and growth habits to their cultural significance and diverse varieties, we delve into the captivating allure that has made them a favorite among gardeners and nature enthusiasts.

What are Black-Eyed Susans?

Black-eyed Susan (Rudbeckia hirta) is a popular and well-loved perennial flower native to North America. It belongs to the daisy family (Asteraceae) and is known for its vibrant yellow or orange petals with a prominent dark brown or black central cone.

Black-eyed Susans are versatile and adaptable plants that thrive in a variety of growing conditions, making them a favorite choice for gardens, borders, and wildflower meadows. They are known for their ability to withstand heat, drought, and various soil types, making them a reliable and low-maintenance addition to any garden.

Black-eyed Susans are not only visually appealing but also serve ecological functions. They provide nectar and pollen for pollinators, support biodiversity, and can help control erosion in meadow landscapes. Additionally, they are deer-resistant, making them an attractive choice for areas with browsing wildlife.

Whether you’re seeking to enhance your garden’s aesthetic appeal, create a vibrant wildflower meadow, or attract pollinators, Black-eyed Susan is a versatile and reliable perennial flower that brings beauty and ecological benefits to any landscape.

What do Black-Eyed Susans look like?

black eyed susans

Black-eyed Susans (Rudbeckia hirta) are visually striking and easily recognizable perennial flowers. Here’s a description of their appearance:

  1. Petals: Black-eyed Susans have vibrant yellow or orange petals that surround a dark brown or black central cone. The petals are elongated, slender, and somewhat spoon-shaped. Some cultivars may exhibit variations in color, including shades of red or bi-colored petals.
  2. Central Cone: The central cone, also known as the “eye,” is the distinguishing feature of Black-eyed Susans. It is dark brown or black and raised, creating a prominent contrast against the bright petals. The cone is composed of numerous tiny individual flowers that eventually mature into seeds.
  3. Growth Habit: Black-eyed Susans typically grow in clumps with multiple stems arising from a basal rosette of leaves. The stems are sturdy and upright, reaching a height of about 2 to 3 feet (60 to 90 centimeters). They can be slightly hairy or rough to the touch.
  4. Foliage: The leaves of Black-eyed Susans are alternate and lance-shaped. They have a deep green color and a slightly coarse texture. The leaves grow along the stems and become progressively smaller as they ascend.
  5. Blooming Period: Black-eyed Susans typically bloom from mid-summer to early fall, providing a burst of color during this time. The flowers may continue to bloom for several weeks, attracting pollinators like bees and butterflies.
  6. Longevity: Black-eyed Susans are generally short-lived perennials, but they can reseed themselves and form new plants, allowing them to persist in the garden over time. They may also be propagated through division or by collecting and sowing their seeds.

Overall, the combination of the vibrant yellow or orange petals and the dark central cone gives Black-eyed Susans a distinctive and eye-catching appearance. These cheerful flowers bring a touch of brightness to gardens, borders, and wildflower meadows, while also attracting beneficial pollinators.

How to grow Black-Eyed Susans

Growing Black-eyed Susans (Rudbeckia hirta) is a rewarding and relatively straightforward process. Here are some key steps to successfully cultivate these vibrant perennial flowers:

  1. Select a Suitable Location: Choose a location that receives full sun to partial shade. Black-eyed Susans thrive in bright sunlight but can tolerate some shade. Ensure the soil has good drainage to prevent waterlogging.
  2. Prepare the Soil: Before planting, prepare the soil by removing weeds, rocks, and debris. Incorporate organic matter, such as compost, into the soil to improve its fertility, structure, and moisture retention.
  3. Planting: Black-eyed Susans can be grown from seeds or purchased as seedlings from a nursery. If starting from seeds, sow them directly in the garden in early spring after the last frost date or start them indoors 6-8 weeks before the last frost. When transplanting seedlings or setting out plants, space them about 12-18 inches (30-45 centimeters) apart to allow for proper growth.
  4. Watering: Water the newly planted seedlings thoroughly to help them establish their root systems. After that, Black-eyed Susans are relatively drought-tolerant and only require watering during prolonged dry periods. It’s important not to overwater, as they prefer well-drained soil.
  5. Mulching and Weed Control: Apply a layer of organic mulch, such as straw or wood chips, around the base of the plants to help retain soil moisture, suppress weed growth, and maintain a more consistent soil temperature. Keep the mulch a few inches away from the plant’s stems to prevent rot.
  6. Deadheading and Pruning: To promote continuous blooming and a neat appearance, remove faded flowers by deadheading. This encourages the growth of new blooms. Additionally, in late fall or early spring, cut back the plants to about 4-6 inches (10-15 centimeters) above the ground to rejuvenate them.
  7. Fertilization: Black-eyed Susans are generally not heavy feeders. However, you can apply a balanced, slow-release fertilizer in early spring if your soil is lacking in nutrients. Follow the instructions on the fertilizer packaging for the appropriate dosage.
  8. Support and Staking: While Black-eyed Susans have sturdy stems, taller varieties may benefit from staking to prevent them from bending or toppling over during heavy rain or strong winds.
  9. Pest and Disease Management: Black-eyed Susans are generally resistant to pests and diseases. However, occasional issues with aphids, slugs, or powdery mildew may arise. Monitor the plants regularly and take appropriate action if necessary, such as using organic pest control methods or providing adequate air circulation.
  10. Division and Propagation: Every few years, as the plants become crowded, consider dividing them in early spring or late summer. Dig up the clumps, separate them into smaller sections, and replant them to ensure vigorous growth and maintain plant health. Collecting and sowing the seeds is another method of propagation.

By following these guidelines, you can successfully grow and enjoy the vibrant beauty of Black-eyed Susans in your garden. These cheerful flowers will brighten up your landscape, attract pollinators, and provide long-lasting blooms throughout the summer and early fall.

Thomas Nelson
Gardening Expert
Hi! I'm Thomas, one of the founders of The Garden Magazine. I come from a long line of gardeners who used the art of gardening as a way to live long, healthy lives. I'm here to share my knowledge of gardening with the world!