Black Knight Butterfly Bush Shrubs

Buddleja davidii 'Black Knight'

Growzone: 5 - 9

As Low As $39.95
1. Choose Size & Quantity
Size Price Quantity
3 GAL $39.95
2. Choose Recommended Add-Ons
Product Price Quantity
Espoma Bio-Tone Plus Starter Plus $14.95
Espoma Flower-tone $15.99
Treegator Jr. Slow Release Watering Bag $25.95
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This Plants Growzone: 5 - 9
Growing Zone: 5 - 9
Mature Height: 6 to 8 feet
Mature width: 4 to 6 feet
Classification: Broad Leaved deciduous shrub, re-blooming
Sunlight: Full Sun
Habit: Mound shape, Bush like
Foliage: Silver Green Flower
Color: Violet Purple, Very floriferous
Pruning Season: No pruning needed
Soil Condition: Any well drained soil
Water Require: Water well until established

Black Knight Butterfly Bush Shrubs for Sale Online


Buddleia Black Knight is a deciduous shrub that is fragrant, fast-growing and easy to care for. Pollinators such as bees, butterflies, and birds swarm to their blooms all summer long. 


Planting Information

We suggest when planting your newly purchased Black Knight Buddleia plants that you dig a hole twice as wide as the root system but not deeper. Depending on the quality of your existing soil you may need to add a locally sourced compost or topsoil to the back-fill soil. We do not recommend using straight topsoil or compost as a back-fill soil because more times than not these products will retain entirely to much moisture and will cause the root system to rot. Adding compost or topsoil will help the young feeder roots of Black Knight Buddleia to spread through the loose, nutrient rich soil, much easier than if you used solely the existing soil which more times than not will be hard and compacted. The most common cause of plant death after transplanting is planting the new plant to deep. That is why we do not recommend planting in a hole any deeper than the soil line of the plant in the pot. A good rule is that you should still be able to see the soil the plant was grown in after back-filling the hole. Bio-tone fertilizer is recommended to be used at planting to provide the much needed mycorrhiza fungus that naturally protects plant roots from diseases and pathogens.


Frequently Asked questions

How should I water my Black Knight Butterfly Bush?

How should I mulch my Butterfly Bush?

When Should I fertilize my Butterfly Bush and What type of fertilizer should I use?

How should I prune my Butterfly Bush?


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