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You are here: Home / Flowers & Plants / My Favorite Plant-It-And-Forget-It Flower: Black-eyed Susan

Updated on May 21, 2019

My Favorite Plant-It-And-Forget-It Flower: Black-eyed Susan

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Black-eyed Susan flowers with a butterfly feeding on one flower

If you’re looking for a plant-it-and-forget-it type of plant that still produces lots of flowers AND attracts pollinators, then look no further than the black-eyed Susan (Rudbeckia hirta).

This easy-to-grow wildflower is found throughout North America where you can find it alongside roads, in grassy openings and prairies, and even along the edge of forests. They bloom in mid to late summer through fall and vary in height from one foot to several feet tall.

Single black-eyed Susan flower against a dark background
Black-eyed Susan (Rudbeckia hirta)

With the dark brown center and bright orange-yellow petals, it resembles a tiny sunflower, which makes sense, as it is in the sunflower family – Asteraceae.

Their leaves are mostly basal and are rather hairy and rough. The hairy, rough leaves and stems can irritate your skin, so wear long sleeves and gloves when working with this plant. I’ve failed to do so on occasion and ended up with a bit of a rash from the irritation.

Wildlife Uses for Black-eyed Susan

It is deer resistant, drought tolerant, and attracts butterflies and bees and birds eat the seeds. In a cluster, this plant provides a great splash of color in your garden.

Did I mention they are super easy to grow and very low maintenance? It’s like a win-win.

Where to Plant It & How to Grow It

Pearl Crescent butterfly on Black-eyed Susan
Black-eyed Susan

For best flowering, plant in full sun. However, they can tolerate a little shade.

If you want to ensure longer bloom time, dead head the plants. But for low maintenance (that’s the way I do it!), just leave them for the birds.

I have noticed that in really humid, wet summers, my black-eyed Susans will get powdery mildew in some places. Thinning out really thick clumps may help this.

Did I mention this plant spreads, I mean really spreads? So be sure that you plant it where you don’t mind it filling in empty areas. You will need to get in there and thin it out if you want to keep it from taking over. However, most of the time, I do nothing to these plants and they do well. They appear to be very tolerant and forgiving.

Rudbeckia varieties can be perennial, annual, or biennial – so check it out before you make your choice on the type of black-eyed Susan to plant in your garden.

You can propagate these plants be dividing the roots and replanting. Keep the new plants well-watered until they are established. I have been known to literally tear up a piece of this plant and stick it in the ground and water it and it has survived. Talk about hardy!

You can also grow many of the varieties from seed, but getting a clump from a fellow gardener is definitely the easier route.

Characteristics of Black-eyed Susans

Honeybee on a black-eyed Susan flower
Honeybee on a black-eyed Susan flower
  • Easy to grow
  • Drought tolerant
  • Deer resistant
  • Plant in full sun for best results
  • Low maintenance
  • Spread well
  • Attract butterflies, bees, and birds
  • Make good long-lasting cut flowers

Companion Plants for Black-Eyed Susan

In large clumps, black-eyed Susans provide a strong pop of color in any garden, especially in spots where it may be tougher to grow less hardy plants. For a nice contrast of colors and textures, try mixing them with purple, silver, or blue flowering plants or tall grasses.

Black-eyed Susans in abundance

Additional Resources

View photos of Rudbeckia hirta: http://plants.usda.gov/java/imageGallery?category=symbol&imagetype=all&txtparm=RUHI2&viewsort=25&sort=sciname

Read the USDA plant fact sheet: http://plants.usda.gov/factsheet/pdf/fs_ruhi2.pdf

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Article by Garden Experiments / Flowers & Plants / backyard habitat, butterflies, flowers, native plants, plant identification, wildflowers

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Welcome! My name is Kathy and I live in Mississippi Zone 7B. Gardening has always relaxed and rooted me (literally!). It's my happy place. With over 25 years of gardening, I am far from an expert, but I learn from all my experiments. This blog talks about the plants, backyard critters, and more that have made my garden special. Read More

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