Black Knight Butterfly Bush

Attracts Butterflies and Hummingbirds!

  • Dark purple to black blooms 
  • Blooms from June to the first frost!!
  • Great when used as a specimen or planted in masses
  • Fast growing
  • Low maintenance
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Most orders ship the next day!

Product Details

The Black Knight Butterfly Bush might be exactly what your looking for! This butterfly bush features unique dark purple to black blooms attracting butterflies all summer long.

This butterfly bush can grow up 8 feet tall and is great when planted in masses.  Each dark purple to black bloom gets about 4-10 inches long.  This fast grower needs regular watering and grows extremely fast in the spring.  Partial to full sun is recommended for best results.

Expect an extended bloom season from June all the way to the first frost.  Don't forget to trim some cuttings and bring them inside.  These blooms look divine indoors on your kitchen table.

Incorporate in natural areas and include some roses to complement color.  The black knight butterfly bush does great as a accent plant or background variety.  

Additional Information

Shipping Restriction AZ
Grows in Zones 5, 6, 7, 8, 9
Sunlight Full Sun, Part Sun
Soil Type Adaptable
Mature Height 6-8 Feet
Mature Width 5-6 Feet
Drought Tolerance Good
Fall Color Green
Bloom Color Purple
Botanical Name Buddleja davidii 'Black Knight'

How To Care for your new Black Knight Butterfly Bush

When planting your Butterfly Bush be sure you have the right location and conditions for your new shrub to thrive.  Spring and Fall are ideal times to plant.  However, if you avoid freezing and hot temperatures you can plant almost any time of the year.  

Butterfly bushes tolerate full sun and part shade and are adaptable to a variety of soils as long as your soil is well drained.  If your soil is nutrient rich your Butterfly bush will not require fertilizer.  Fertilize in early spring and when planting if your soil is lacking.  Choose a basic slow release fertilizer for flowering plants.  When planting take care not to burn the roots by mixing the fertilizer into the soil before placing your bush in the hole. Water well when your plant is newly planted, but otherwise Butterfly bushes are drought tolerant and only require watering during dry, hot periods. Butterfly bushes don't require pruning, but if you would like to maintain size, these shrubs tolerate heavy pruning.  In cooler climates where this shrub acts more like a perennial, trim within a couple inches of the ground in late winter or early spring. Mulching is a good choice especially in colder regions to protect the roots from freezing temperatures.

The best way to prevent disease and pests is by providing the appropriate care for your plants.  Proper location choice, watering, and fertilization are the keys to your success.  Butterfly bushes are quite resilient and only rarely have issues.  The most common pests affecting this shrub are Japanese beetles and caterpillars.  Japanese beetles can be controlled naturally or by applying bacillus thuringiensis or nematodes as well as hand picking.  There are chemical methods as well, but these tend not to work well this Insect.  Caterpillars should be hand picked.  There are pesticides to treat caterpillars, but these will kill the good caterpillars as well as the bad.


Planting Directions

Step 1:

Unpack all of your plants right away! Look for the perfect location. Make sure you are planting in the correct light conditions.

Step 2:

Dig a hole twice the width of the root ball. Position your plant in the hole. Make sure the top of the root ball is slightly higher than the original grade of the bed. Also check to make sure it is straight from all sides.

Step 3:

Fill up hole with water before placing new plant in hole in order to saturate the surrounding soil.  Once the water is absorbed place your plant in the hole and water thoroughly.  


Planting a shrub digging the hole

Step 4:

Mix the potting soil and the soil removed from the hole. Start by backfilling soil around the root ball. Carefully pack in the soil to remove any air pockets. Water plant thoroughly again until the soil will not hold any more water. This will ensure that your new plant will be a success.

Step 5:

Fertilize around your plant with the amount recommended on the package. Our special Fertilizer contains all of the nutrients to keep your plants growing and healthy. Repeat every 3 months.

Step 6:

Finish up by mulching around your new plant.  Apply 1-2 inches of mulch around the plant and plant bed. Mulch will help keep the soil moist and keep weeds out.

Step 7:

Keep watered with a hose every 2-3 days for 2 weeks. This is critical for plant survival. In the third week, begin to water as needed depending on the weather. Always check by placing your finger under the mulch to see if the soil is moist.


Shipping and Delivery

Most orders ship next business day.  Please allow 1-3 business day to process and pack your order for shipping.  View the shipping map below.  Please note that shipping times on the map below are not guaranteed.  

West coast orders on plants will be held until the following Monday to prevent additional transit time on sensitive plants.  Your plants will be carefully packaged and shipped using Fedex, UPS, or USPS.   

You will receive a confirmation via email when the carrier picks up your shipment.  Delivery emails are also sent when your package arrives.  As soon as your package arrives, It is important to open your boxes and water your new plants thoroughly.

FREE SHIPPING on orders $99
Shipping charges on orders under $99 are calculated at checkout based on your location.

Each plant is carefully hand selected and packaged making sure that they will arrive ready to plant! 

4.7 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
A lovely plant, well delivered...
A big plant and in excellent shape upon arrival...Well worth the money!
June 26, 2017
3 months ago
I've tried this same plant before from another online company and honestly it looked like crap and was way more expensive! The Planting Tree's bush looked beautiful upon delivery and it continues to thrive in our landscape! I'm sticking with for future purchases!
November 4, 2015
Black Knight Butterfly Bush
THe quality of the product was fantastic but I received it 1-19-17 in Southwestern Pennsylvania. I ordered it 1-16-17 and expected to receive the butterfly bush in the spring. Fortunately the temperature was around 60F. and I was able to plant it. See how it does this spring and summer. Received in 3 gallon container, Bush was 15 X 15 green and growing very well packaged.
January 23, 2017
8 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 3 questions Browse 3 questions and 13 answers
Why did you choose this? Store
Because it is beautiful, hardy, perennial, and butterflies like them :)
Doris D on Jul 12, 2017
For the color & height
Kate K on May 26, 2017
Because it is beautiful, hardy, perennial, and butterflies like them :)
Doris D on Jul 12, 2017
To attract butterflies
Richard R on Jun 28, 2017
For the color & height
Kate K on May 26, 2017
Like the color and have never seen anything like this
Lisa A on May 24, 2017
Liked the color
Barbara B on May 21, 2017
I had a purple butterfly bush for years that I adored. It was always full of the most beautiful butterflies. This plant is extremely hardy and very low maintenance. I want one of every color!
KAREN H on Apr 8, 2017
Hardy, gorgeous long-lasting blooms, and I love these bushes!
winnie c on Sep 24, 2016
Purple is a great contrast to the White Gardenias
Joseph K on Sep 16, 2016
To attract butterflies
Richard R on Jun 28, 2017
Like the color and have never seen anything like this
Lisa A on May 24, 2017
Do you ship to WA state?
winnie c on Aug 31, 2016
BEST ANSWER: This plant can ship to WA.
Is Black Night a fragrant Buddleia?
Phoenix H on Dec 26, 2016
BEST ANSWER: Actually the flowers are slightly fragrant.
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