Unsure which plants to get for your yard?

See our curated plant bundles

Click here

Unsure what plants to get for your yard?

Click here

to see our curated plant bundles

30% Off Your Order Today
Map Pin Find your growing zone
Growing Zone: 6
Ship to: 43215 Update
heat map

What is your Shipping Zip Code?

Please ensure we have your correct shipping ZIP code so we can recommend plants suited to your area.

Growing Zone: 6

Map Pin Find your growing zone
Growing Zone: 6
Ship to: 43215 Update
heat map

What is your Shipping Zip Code?

Please ensure we have your correct shipping ZIP code so we can recommend plants suited to your area.

Growing Zone: 6

Shop Here

Arborvitae Trees Plant Consultation

Buddleia 'Black Knight'

Buddleia davidii Black Knight

17 reviews

Shrubs & Hedges
Arborvitae Trees Plant Consultation
product
product
product
product
product
product

Buddleia 'Black Knight'

Buddleia davidii Black Knight

17 reviews

Shrubs & Hedges
  • Attracts butterflies and other pollinators
  • Deep purple flowers add a dramatic touch to the garden
  • Tolerant of various soil types and drought conditions
  • Ships to 43215 in 3 to 7 days
  • Free Shipping Over $150
  • Plant Arrival Guarantee
  • In Stock
  • Free Plant Consult $200

$63.00

$90.00

30% Off

  • 2.5 Qt.
  • 1 Gallon
  • 2.5 Gallon
  • Quart Container
  • Trade 3 Gallon
Quantity:
Additional Discounts for large orders
Order Over $850 and get an additional automatic 10% OFF your order today!
Questions? Call our plant experts: 844-710-0329

Why Buddleia 'Black Knight'?

Buddleia 'Black Knight' is a popular cultivar of the butterfly bush known for its striking deep purple flowers. This fast-growing deciduous shrub can reach heights of 6-10 feet and attracts various pollinators, especially butterflies. 'Black Knight' is low maintenance and thrives in full sun and well-drained soil. It blooms from summer to fall, creating a vibrant focal point in any garden.

People who loved this plant also bought

sun icon

Sunlight

Buddleia 'Black Knight' requires full sun to thrive. It is a sun-loving plant that performs best when it receives at least 6-8 hours of sunlight per day. Without adequate sunlight, the plant may not bloom as profusely or grow as vigorously.

water icon

Watering

Buddleia 'Black Knight' prefers well-drained soil and regular watering, especially during hot and dry conditions. Water deeply once or twice a week, allowing the soil to dry out slightly between waterings. Mulching around the base of the plant can help ret

fertilizer icon

Fertilizing

Buddleia 'Black Knight' thrives in well-draining soil with high organic content. It benefits from a balanced fertilizer application in the spring to promote healthy growth and vibrant blooms. Use a slow-release fertilizer with a higher phosphorus content t

Buddleia 'Black Knight' (Buddleia davidii Black Knight)

The Buddleia 'Black Knight', also known as Buddleia davidii Black Knight, is a stunning deciduous shrub that produces an abundance of fragrant, deep purple flowers. This fast-growing shrub is a favorite among gardeners for its long blooming period, attracting butterflies and other pollinators to the garden.

Its dark green foliage provides a beautiful contrast to the vibrant purple flowers, creating a striking visual display in any garden or landscape. The Buddleia 'Black Knight' grows to a height of 6-8 feet, making it an excellent choice for a focal point or as a backdrop in a mixed border.

This hardy shrub thrives in full sun and well-drained soil, requiring minimal maintenance once established. Pruning in late winter or early spring helps to promote new growth and maintain a compact shape. The Buddleia 'Black Knight' is also deer resistant, making it a great choice for gardens in deer-prone areas.

Add a touch of elegance and color to your garden with the Buddleia 'Black Knight'. Plant it in a sunny location and enjoy the beautiful blooms and the visiting wildlife it attracts.

Plant Information:

Botanical Name: Buddleia davidii Black Knight
USDA Zones: 5 - 10
Color/Foliage: dark purple
Mature Height: 6-8 FT
heat map heat mapheat mapheat mapheat mapheat mapheat map

Pollination Info

Pollination Info for Buddleia 'Black Knight' (Buddleia davidii Black Knight)

  • Pollinator Attraction: Buddleia 'Black Knight' is highly attractive to a variety of pollinators, including butterflies, bees, and hummingbirds. The abundant nectar-rich flowers are especially popular with butterflies.
  • Pollination Mechanism: The flowers of Buddleia 'Black Knight' are perfect flowers, meaning they have both male and female reproductive organs. The main pollinators of Buddleia 'Black Knight' are butterflies, which are attracted to the flowers' bright colors and sweet nectar. As the butterflies feed on the nectar, they inadvertently pick up pollen from the flower and transfer it to other flowers as they continue to feed.
  • Pollinizer Suggestions: While Buddleia 'Black Knight' does not require a specific pollinizer to produce fruit, planting multiple Buddleia plants of different varieties can increase the chances of successful pollination and fruit set. Other varieties of Buddleia davidii, such as 'Santana' or 'Royal Red', can serve as suitable pollinizers for 'Black Knight'.

FAQ

Frequently Asked Questions about Buddleia 'Black Knight' (Buddleia davidii Black Knight)

Q: What is Buddleia 'Black Knight'?

A: Buddleia 'Black Knight', also known as Buddleia davidii Black Knight, is a deciduous shrub with dark purple flowers that attract butterflies and other pollinators.

Q: How tall does Buddleia 'Black Knight' grow?

A: Buddleia 'Black Knight' can grow up to 6-8 feet tall and wide, making it a great option for landscaping and attracting wildlife to a garden.

Q: When does Buddleia 'Black Knight' bloom?

A: Buddleia 'Black Knight' typically blooms from mid-summer to early fall, producing clusters of fragrant dark purple flowers that butterflies love.

Q: How do I care for Buddleia 'Black Knight'?

A: Buddleia 'Black Knight' prefers well-drained soil and full sun. It is drought-tolerant once established and benefits from regular pruning to promote healthy growth and blooming.

Q: Can I grow Buddleia 'Black Knight' in a container?

A: Yes, Buddleia 'Black Knight' can be grown in a container as long as the container is large enough to accommodate its roots and it is placed in a sunny location.

Q: Does Buddleia 'Black Knight' attract butterflies and other pollinators?

A: Yes, Buddleia 'Black Knight' is known for attracting butterflies, bees, and other pollinators to the garden with its fragrant flowers.

Q: Is Buddleia 'Black Knight' deer-resistant?

A: While Buddleia 'Black Knight' is not completely deer-resistant, deer typically do not prefer to eat this plant.

Q: Can I plant Buddleia 'Black Knight' near a pond or water feature?

A: Buddleia 'Black Knight' can tolerate moist soil, so it can be planted near a pond or water feature as long as the soil drains well and the plant receives enough sunlight.

Planting & Care

Planting & Care for Buddleia 'Black Knight' (Buddleia davidii Black Knight)

Buddleia 'Black Knight', also known as Buddleia davidii Black Knight, is a popular shrub valued for its fragrant flowers and attractiveness to butterflies.

Planting:

  • Choose a location with full sun to partial shade.
  • Plant in well-draining soil with good air circulation.
  • Dig a hole twice as wide and deep as the root ball.
  • Place the plant in the hole and backfill with soil.
  • Water thoroughly after planting.

Care:

  • Water regularly, especially during hot and dry periods.
  • Prune in late winter or early spring to promote new growth and flowering.
  • Feed with a balanced fertilizer in spring and summer.
  • Remove faded flowers to encourage continuous blooming.
  • Monitor for pests and diseases, such as aphids or powdery mildew, and treat promptly if detected.

By following these planting and care tips, you can enjoy the beautiful flowers and butterfly-attracting qualities of Buddleia 'Black Knight' in your garden.

Check Out These Verified Customer Reviews:

Customer Reviews

4.7 out of 5 based on 17 reviews

76% (13)
18% (3)
6% (1)
0% (0)
0% (0)
Write a review Cancel review
Submit Review
Verified
Kumiko L.

Healthy plant upon delivery.

Verified
Gordon F.

Customer service was excellent! They were very responsive to my questions and provided helpful information.

Verified
Ivan F.

I highly recommend the Buddleia 'Black Knight' Butterfly Bush. It's a must-have for any butterfly garden.

1 2 3 4 5 6 >
Stay in the loop. Sign up for our mailing list for special offers, new products, expert advice and more.

Item has been added to your cart.