My butterfly Bush doesn’t look good. The shoots have clusters but the flower almost looks black not purple. Could it be the soi

Question

l. Very wet when I planted and almost clay like.

Answer 1

Well draining soil is key, so heavy clay soil is likely the issue.

You can either move the plant to a new location or you could work on amending the soil.
Here are some links with more information.

https://www.gardeningknowhow.com/ornamental/shrubs/butterfly-bush/butterfly-bush-care.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-improve-clay-soil.htm