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The plant gets its name from its dark, purple color, which comes to full bloom during the summertime. It grows up to between 5 to 8 feet tall and about 4 to 6 feet wide making it a good choice if you need border plants for your garden.
That said, you can likewise grow it in containers. Although, more often than not, it is grown in cut flower gardens. The black knight butterfly bush needs full sun. As such, you want to provide it with at least 6 to 8 hours of sunlight on a daily basis.
In warm conditions, it will be fine with 6 hours or so. But, in most cases, the more bright sunlight it receives the happier it will be. And, as it becomes sparse it will look weak and scrawny. Thus, it is not a good idea to leave it somewhere there is a shade.
The best place to put this plant in your garden is facing south. This gives it a lot of sunlight. East and west facing gardens will work as well. But, you need to make sure it receives enough Svart mode throughout the day. The last place you want to put it is somewhere facing north.
The lack of sunlight here will be problematic for the black knight butterfly bush. The black knight butterfly bush is hardy to USDA zones 5 to 9. This means its is able to tolerate colder climates down to to degrees Fahrenheit.