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Black Knight Butterfly Bush

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About Black Knight Butterfly Bush

Black Knight Butterfly Bushes, also known as Buddleia davidii ‘Black Knight’, are popular choices for landscapes due to their striking deep purple flowers and their ability to attract butterflies and other pollinators.

Here are some reasons why you might want to consider adding Black Knight Butterfly Bushes to your landscape:

  1. Attracts pollinators: Butterfly bushes are known for their ability to attract butterflies, bees, and other pollinators to your garden. This can help improve the health and biodiversity of your landscape.
  2. Easy to care for: Butterfly bushes are generally low maintenance and easy to care for. They don’t require much water or fertilization, and they can tolerate a wide range of soil conditions.
  3. Long blooming season: The Black Knight variety produces long-lasting blooms from mid-summer to fall, adding a pop of color to your landscape for months.

To grow Black Knight Butterfly Bushes, here are some steps you can follow:

  1. Choose the right location: Butterfly bushes prefer full sun and well-draining soil. Choose a location in your landscape that receives at least 6 hours of direct sunlight per day.
  2. Plant in the spring: Plant your Black Knight Butterfly Bush in the spring, after the threat of frost has passed. Dig a hole twice as wide as the root ball and slightly deeper than the root ball.
  3. Water and fertilize: Water your butterfly bush regularly, especially during hot, dry weather. Fertilize once in the spring with a slow-release fertilizer.
  4. Prune in the spring: Prune your butterfly bush in the spring before new growth begins. This will encourage healthy growth and help maintain its shape.
  5. Watch for pests and diseases: Watch for common pests and diseases such as spider mites and powdery mildew. If necessary, treat with an appropriate pesticide or fungicide.

Overall, Black Knight Butterfly Bushes are a beautiful and low-maintenance addition to any landscape, and their ability to attract pollinators makes them even more valuable.

Spacing Your Black Knight Butterfly Bush

For a seamless planting, plant your Black Knight Butterfly Bush 4 feet apart. For space between plantings, plant them 5-6+ feet apart.

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Scientific Name
Buddleja davidii 'Black Knight'
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Average Size
6-8' H x 4-6' W
Sun Exposure
Bloom Season
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