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  • Black Knight Butterfly Bush for Sale

    Black Knight Butterfly Bush for Sale

*images shown are of mature plants

Black Knight Butterfly Bush

Buddleia 'Black Knight'


1. Size

  • Ships week of Mar 26

2. Quantity

3. Extras

-t- Planting Mix
Black Knight Butterfly Bush Planting Mix

Helps your Black Knight Butterfly Bush get established in a fraction of the time, become more drought tolerant, and grow faster. Here's how:

Beneficial Bacteria... It's like a Probiotic for your tree... creating an explosion of fine hair roots that vastly improves nutrient and water uptake.

Course Organic Compost... loosens and improves all types of soils while promoting proper pH levels. You get better drainage and moisture retention.

Microbial Fertilizers... including Sea Kelp, Yucca, and 100 other elements proven to gently feed your tree without burning the roots.

Use 1 bag of Planting Mix for each plant ordered.

Soil Contents
-t- Root Rocket™ Fertilizer
Root Rocket™ Transplant Fertilizer

2oz. Packet

Get your new plants off to the right start by using Root Rocket™ Transplant.

This soil amendment contains 16 strains of mycorrhizal fungi, biostimulants, beneficial bacteria and Horta-Sorb® water management gel.

Simply sprinkle the product into the planting hole adjacent to the root ball when planting.

The organisms will start to work right away supplying the roots with much needed nutrition.

The specially formulated Horta-Sorb® will reduce transplant stress and aid in water retention.

1 packet per plant

Root Rocket Fertilizer
Add A Decorative Pot

Growing Zones: 5-9
(hardy down to -10℉)

Growing Zones 5-9
You are in Growing Zone: 6

Mature Height:

4-6 ft.

Mature Width:

4-6 ft.


Full Sun


5-10 ft.

Growth Rate:


Drought Tolerance:


Botanical Name:

Buddleia 'Black Knight'

Does Not Ship To:


The Butterfly and Hummingbird Feeder You'll Never Have to Refill

- Attracts butterflies like no other plant
- Drought tolerant
- Long blooming period

Your morning coffee time will never be the same!

Bright, fragrant blooms draw in hoards of butterflies and hummingbirds.

Plant the butterfly bush in groupings or in rows for a summer long spectacular show.

Butterfly Bush works in the perennial garden and as an accent plant.

This deciduous shrub highlights any garden. The large, elongated clusters of blooms provide ample nectar for all varieties of butterflies and hummingbirds.

In the heat of the summer, this star shines. A profusion of flowers from mid-July until the first frost reward you month after month with uninterrupted blooming.

Your well developed 3 gallon container plant will reach its mature height of 4-6 ft. the first year.

This Butterfly Bush is highly adaptable and will tolerate most growing conditions, including clay and sandy soils. It's a drought tolerant plant that requires little water once established.

Your Butterfly Bush will give you year after year of enjoyment.

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Customer Reviews

4.4 / 5.0
34 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Black Knight Butterfly Bush
this product came exactly as described. It grew fantastically. It is beautiful. I get so many wonderful comments about it. Also lots of butterflies and hummingbirds. I highly recommend this for anyone. Hey remember God loves us everyday
September 19, 2014
over 3 years ago
Our Butterfly Bush was packaged well and arrived safely. There were actually three bushes in that pot and I planted one in my 'secret garden,' one in the front yard and gave one to my neighbor. All three have responded well to their new environment and produced beautiful deep purple blooms within a very short time which I enjoyed tremendously. It seems every time I sat down and enjoyed the blooms, I saw at least one butterfly. You weren't kidding! Thank you so much for the wonderful addition to our home
January 1, 2013
over 5 years ago
Black Knight Butterfly Bush
My butterfly bush came to me packed very good. The plant was trimmed back fore shipping and I did not plant in the ground I planted it in a bigger pot .it has grown so much I might have to transplant it in the ground very soon. I wanted to wait till it got more strong before planting. It is doing very well.
January 13, 2015
over 3 years ago
Growing Zone:
Lovely bushes, came quick, healthy, planted 2 weeks ago, they have beautiful purple blooms already. We want 3 more... Thanks
January 1, 2013
I ordered two of these, one died and the other grew at a fantastic rate. Planted it in late April and it was about 3 ft high in some places by mid-July. Really beautiful and the butterflies practically swarmed it
January 1, 2013
sun sensitive
made the mistake of putting it where it gets partial sunshine(due to seasonal movement of sun), now growing only one direction to reach the sunlight, but not really the plants' fault! Still attracting butterflies though!!
December 6, 2014
over 3 years ago
Growing Zone:
Beautiful Addition to My Driveway
Ordered three Butterfly bushes early this year and for a while, I was concerned about the health of the plants. I contacted Customer Service who told me to let Nature take its' course and lo' and behold, the bushes are beautiful. It is now July and the flowers on them are just like the magazine shows. The bushes proved to be quite hardy and easy to maintain. I absolutely love them.
July 26, 2015
over 2 years ago
Growing Zone:
My plant arrived totally dried out no one drop of water . I plant as per instructions but so far plant does not look so good ,leaves drying out and curling up . I watch and see what happens
January 1, 2013
I bought one of these last spring and planted it in early June. It grew and had beautiful, beautiful flowers on it! I was looking forward to it blooming again this year, but unfortunately my new lawn service guy cut the bush right to the ground today! I will have to buy another one ASAP to get it in the ground for this season
January 1, 2013
over 4 years ago
Black Knight Butterfly bush
Planted less than a week ago and already sprouting new growth!
July 29, 2015
over 2 years ago

Planting & Care

It's Easy to Plant & Care for Your Black Knight Butterfly Bush

Black Knight Butterfly Bush Planting Diretions

The Black Knight Butterfly Bush (Buddleia 'Black Knight’) is a gorgeous deep purple shrub that blooms from early summer until autumn. These amazing plants are adored by hummingbirds and butterflies and make wonderful additions to your landscape. They reach a height/width of 4-6 feet and are recommended for USDA growing zones 5-9. Butterfly bushes will thrive to the best of their potential in a full sunlight area.

Choosing a location: Select a location that receives ample sunlight, full sun will be best. These plants prefer 6+ hours of direct sunlight daily. Although preferring full sunlight, they can still do well in a partially shaded spot. This still means they would still need at least 2-4 hours of direct morning sunlight and they can tolerate afternoon shade.

Planting directions:
1) After choosing your area, dig a hole that is twice as wide and just as deep as the container that the plant arrives in.
2) Carefully remove the plant from the container. Lightly tapping around the base will help to loosen the root ball if it is difficult to remove.
3) Lightly comb the ball with your fingers to loosen the roots so that they spread out more quickly.
4) Place your plant in the hole so that the top of the soil is even with the surrounding soil level.
5) Backfill with a mixture of native soil and compost. These plants like rich soil so you can use a 50/50 mixture of compost and native soil to add additional nutrients.
6) Water after every few inches to settle the soil and remove any air pockets that may have formed. Tamp the soil well when done.
7) Water well when done and cover the area with mulch to protect the roots and help them conserve moisture. Be sure the mulch is not touching the tree or rot and fungus may set in.

Watering: Ensure the area has well draining soil, drainage is essential. Once planted, to help the soil stay moist around these plants, you will need to water your Butterfly Bush deeply and mulch to conserve soil moisture. The soil must be moist at least 6-8 inches deep. Once watered, allow the soil to dry out before watering again.

Pruning: These plants can be pruned annually. You can remove spent blooms on the plant to encourage more blooms to come out on the bush. Butterfly Bushes can also be pruned to not only shape them, but to encourage more aggressive new growth. You can prune them towards the ground to accomplish this. It can be done during the plant's dormancy period either in late fall to early winter or during the spring.

Fertilization: Butterfly Bushes rarely need fertilizer unless you are dealing with poor soil conditions. If that is the case, you can uses a slow release fertilizer for your plants. Follow the instructions on the package of your fertilizer and be certain to water deeply afterwards. Be cautious of high nitrogen fertilizers that will encourage more foliage but less blooms.

Pests: Butterfly Bushes for the most part are not bothered by pests. However, they can have issues with Spider Mites and caterpillars from time to time. Both insects are easily treatable with insecticidal soap. If they remain on the plant you can use something stronger like Neem Oil or Bacillus thuringiensis.

Planting & Care

Questions & Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 21 questions Browse 21 questions and 87 answers
Why did you choose this? Store
Color and aroma and attraction of butterflies
Joey O on Jan 2, 2018
I love butterflies and wanted a purple color in my back yard
Kimberly L on Sep 25, 2017
Color and aroma and attraction of butterflies
Joey O on Jan 2, 2018
LOVE butterflies
tommie d on Oct 26, 2017
I love butterflies and wanted a purple color in my back yard
Kimberly L on Sep 25, 2017
Love to help the butterflies, and I've always had good luck with them.
Gale H on Sep 11, 2017
This one is in memory of my sister. She had one and loved the fact that it draws so many butterflies..
John J on Aug 10, 2017
These plants bring butterflies around all the time
Amy M on Jul 7, 2017
Beautiful on the edge of the flower beds
James H on Jul 5, 2017
Divine Inspiration
Takysha M on Jun 20, 2017
pretty accent central piece in the front garden
AMY H on Jun 12, 2017
Love all of the beautiful and the variety of the butterflies!!!
James E. M on Jun 5, 2017
I'm hoping to attract more butterflies and hummingbirds. A friend of mine has a tri colored bush.
susan r on Jun 5, 2017
to see if it actually attracts butterflies and humming birds, and it looks beautiful
Nathan B on May 18, 2017
love the way the butterflies flock to these bushes and the long flowering period through summer.
Deborah S on May 15, 2017
Planting a butterfly garden
Kassandra S on May 5, 2017
We have one in our yard and just love it. It constantly has butterflies on it when it's blooming. So pretty. Would highly recommend.
Linsay S on May 3, 2017
We would like to see butterflies here.
Tammy B on May 2, 2017
Sympathy gift.
Meridith H on May 2, 2017
I love the colorful blooms and would love to see some butterflies..
Paula M on Apr 30, 2017
Very hardy and a wonderful compliment to the garden. It attract butterflies, bees and hummingbirds.
Charlee C on Apr 30, 2017
Love butterflies in a garden.
Peter F on Apr 28, 2017
I chose this butterfly bush to go in the center of a hummingbird garden between arches of climbing Jasmin and honeysuckle.
Stacey J on Apr 22, 2017
Like the color and how fast it grows and that it attracts butterflies.
Colleen F on Apr 21, 2017
We love butterflies in our yard and anything that helps attract them is good for us
Joan O on Apr 13, 2017
I love my butterfly plant, I. bought the bush last yr. plant doing very well with lots od butterflys hanging around.
Mary Gene M on Apr 1, 2017
Beautiful and gorgeous
BRYAN L B on Mar 30, 2017
Looking to attract more butterflies and hummingbirds to the yard. Thought we'd give this a shot and see.
Jason H on Feb 24, 2017
The coloring looks so beautiful. Plus I would love to attract butterflies to my yard.
Alesia D on Feb 23, 2017
butterfly bush
Steve J on Feb 22, 2017
cause its pretty
cindy f on Feb 5, 2017
Love these and received a plant as a gift yesterday and was so impressed with your quality I had to order!
Angie P on Oct 26, 2016
Sandra H on Aug 31, 2016
Had butterfly bushes before but they all died. I hope this one will thrive. Love to help the wildlife and love the butterflies..
Susan K on Aug 19, 2016
To attract birds & butterflies
Francis C on Aug 18, 2016
Mainly because it is drought tolerant and attracts bees and butterfly.
Adrian M on Jul 23, 2016
something pretty to attract the butterflies
JUDITH K on Jul 14, 2016
Attract butterflies and hummingbirds. I also like the purple color.
Jayda W on Jun 23, 2016
This is to James and wife Danielle from Mary and Jeff Cotter. They just moved into a house about a year ago and have only been married 2 years. Danielle's grandmother passed away and I thought this would be something she can keep for years to come and enjoy in her yard in memory of her grandmother. James and Danielle live in TN and Jeff and I live in NC. Thank you for your help.
James C on Jun 20, 2016
Chose this bush to attract more butterflies to our yard.
Ruth E on Jun 15, 2016
I wanted butterfly bushes for a while now. I wanted something different then what most people have like the white and pinks. Thats why I choose the Black Knight! They came last week and they were beautifully package and they look like bushes and not a stick with a couple leaves of them! I was very impressed!!! Thankyou for wonderful and beautiful plants, trees, and bushes!!!! I will be ordering from you again!!!!!
Dee A on Jun 15, 2016
Grows crazy
Elaine W on Jun 11, 2016
To attract colorful butterflies and hummingbirds throughout the growing season.
Charles R on Jun 9, 2016
I enjoy the Butterflies
Clovelle M on Apr 16, 2016
Julie R on Apr 13, 2016
color in the front of my home
jack batista j on Apr 13, 2016
I have a number of butterfly bushes but not this color
ROSEMARY S on Apr 10, 2016
Color and ease of care
Jane H on Apr 9, 2016
We want bees and butterflies to help our vegetable garden.
Rachael R on Apr 9, 2016
Love butterflies!
Linda K on Apr 7, 2016
I have an area that is faced with the Texas afternoon sun that has taken its
toll on my Knockout roses. I needed something colorful next to my Olive Trees
to complement my other plants. Plus I love plants that attract butterflies!!
Saundra Lee K on Apr 7, 2016
We have children and they love to see the butterflies as they migrate south. So w thought it would be nice to have these in front of our picture window.
Santiago m on Mar 19, 2016
LOVE butterflies
tommie d on Oct 26, 2017
Love to help the butterflies, and I've always had good luck with them.
Gale H on Sep 11, 2017
I need to know if you trim the Bush at some point & when & how fare down the stem do I go? Also will it come back next year?
Sheila on Aug 27, 2014
BEST ANSWER: You don't have to trim Butterfly Bushes, but since they bloom on new growth, many gardeners prune theirs back every year to encourage more bloom and a smaller bush. In fact, in the northern portion of its range, Buddleia dies back to the ground every winter, achieving the same effect as a heavy pruning. You can cut the stems all the way back to 12 to 24 inches, depending on your personal taste; this should be done in late winter to early spring, but not in fall, for the hollow branches will hold water and split when it freezes.
fertilizer for butterfly bush?
A shopper on Jun 6, 2014
BEST ANSWER: The Black Knight Butterfly Bush generally doesn't need any fertilizer, If your lawn is missing some nutrients or you would like to give your bush a bush use 10-10-10.
how often to water? can it be overwatered?
A shopper on Aug 6, 2014
BEST ANSWER: The Black Knight Butterfly Bush is drought tolerant. It likes dry feet. Only water it during dry spells or extreme heat. Give it a slow deep watering.
Do deer bother this bush?
A shopper on Sep 8, 2014
BEST ANSWER: One of the reasons I chose the Butterfly Bush is because it is not a favorite of the deer. Not that they won't ever eat it.....but it is less likely to be a target. So far, they have left mine alone and they are beautiful.
Will it attract Bees?
Paula J on Sep 10, 2015
BEST ANSWER: I haven't seen any bees at that bush but the bees sure like our lavender bush which is close to it. Our buttlerly population has been in decline for the last few years and so has the bee population and that may be why I haven't seen the bees at the bush. Hope this helps you.
Can I grow my butterfly bush in a pot for a while?
Jeff B on Feb 6, 2017
BEST ANSWER: Yes, shouldn't be a problem. Just be shure to climatize bush gradually prior to planting so you don't shock it to bad if you have it indoors.
How deep and widespread is the root system? Can this be planted next to a home's foundation?
Michelle J on Aug 9, 2015
Our butterfly bush is 2 years old and is quite large. We planted it in a border around our patio in full sun and it us very happy. I cannot image this bushlanted cole to a foundation because the canopy is so wide. Better to plant further away from the house so you can see it blooming. The bush arrived in a box and was planted in the fall. Grew well and bloomed first year but really took took off this year. I hope these comments are helpful to your planning.
Does this take full sun?
A shopper on Jun 7, 2014
BEST ANSWER: Takes full sun and blooms beautifully.
Will it grow in zone 10?
Channah01 on Apr 30, 2017
BEST ANSWER: product info states good for zones 5-9
Do I remove the dead stems after the growing season or leave them to shelter new growth ?
Bette B on May 22, 2015
BEST ANSWER: Yes, cut the whole plant down to about 10" after the winter is over. The entire plant grows back up from the ground. It will be twice as big this year. I love it! Also, if you want more blooms, dead head the died off blooms and new ones will keep forming.
Is it drought tolerant?
Channah01 on Apr 30, 2017
BEST ANSWER: I live in northern NJ and last summer/ fall we had water restrictions., not a true drought but low water tables. This spring the butterfly bush is growing just fine for a second year.
Is this deer resistant ?
Anne C on Mar 17, 2016
BEST ANSWER: This does appear to be resistant to deer. We have many deer by us, so I think it would be noticed . We love this bush!
Do I need to prune or cut back butterfly bush in the fall? I live in IL.
Barry B on Nov 3, 2015
BEST ANSWER: I trim mine back in the Fall so it gets bushier. If you don't will grow tall and stringy.
Im thinking of purchases 2 of these bushes. Will they eventually act as a privacy fence?
Jo P on Dec 10, 2017
BEST ANSWER: Oh my gosh yes! They get HUGE!
I live in zone 9. Best time to prune /cut the Bush ?
Vaiju M on Nov 16, 2017
BEST ANSWER: These plants can be pruned annually. You can remove spent blooms on the plant to encourage more blooms to come out on the bush. Butterfly Bushes can also be pruned to not only shape them, but to encourage more aggressive new growth. You can prune them towards the ground to accomplish this. It can be done during the plant's dormancy period either in late fall to early winter or during the spring.
Are these bushes good near a pool?
L H on Oct 23, 2017
BEST ANSWER: Our black knight butterfly is against the fence but it is also close to our pool. We love our bush. It has tripled in size since planting and is planted in direct sunlight.
I live in Florida. We do get a lot of rain. I'm trying to encourage the butterflies in the backyard and would like to get some hummingbirds. Is it too moist in this environment for that plant?
Shannon C on Nov 1, 2016
BEST ANSWER: They do like moist soil, but not saturated.
Is this plant harmful to animals?
Kimberly W on Aug 29, 2015
BEST ANSWER: In no way. It attracts butterflies, moths and bees and is very showy
Mike M
can you plant a butterfly bush in a large pot?
Denise S on Jun 13, 2015
BEST ANSWER: They do prefer to be planted in the ground, but if you wish to plant it in a container I would say it should be at least 15 gallons.
How long does this bush bloom?
A shopper on Oct 6, 2014
BEST ANSWER: In north Texas this bloomed almost the whole summer, around 4 months if not longer

Shipping Details

Most items ship the next business day unless otherwise noted

Estimated Shipping Time: Most orders ship immediately, however some orders may ship in 1-2 business days (we do not ship on the weekends) from date of purchase. As noted on the website, some items are seasonal, and may only ship in spring or fall. Once your order is shipped, you'll receive an email from with a tracking number.

Shipping Alert:

Due to cold weather, we have suspended shipping to the areas that are shaded on the map below. Please view the diagram to determine if your area has been affected. This includes anyone in Growing Zones 3, 4, 5 or 6. If you are unsure of your growing zone, visit our Growing Zone Finder.

We will resume normal shipping in the Spring. Please see the table below for your approximate ship date.

Zone Map


Shipping Resumes

Zones 3 & 4

Week of Apr 30th

Zones 5

Week of Apr 16th

Zones 6

Week of Mar 26th

Zones 7-11

Ships Now!

Shipping Cost

Amount of Order


Less than $15











32% of order