About Plumbagos?

Question

I live in FL, zone 9. Why do my plumbagos have dark brown leaves in the joints of the branches? How often should I fertilize? I have very sandy soil but put rocks in the bottom of the hole before I planted and use black cow fertilizer on the surface and every 30 days or so use Miracle Gro. Is that right?

Answer 1

The dark leaves could be natural coloration, if the leaves are supple and healthy otherwise. If they are dried out, then it might be a fungus. A standard fungicide will treat that.

As far as the fertilizer, the Black Kow is fine every month. If you are using Miracle Gro, I would do it once every 2-3 months as it is a bit more potent.