My Lightning Bamboo Green (Pedilanthus tithymaloides, also called Euphorbia tithymaloides) feels well at my home; he already has a sprout.
So I can't explain what the white rash on the leaves are. It looks like white dots, but made of powder. I've already removed such leaves two days ago, but now other leaves have the same rash.
Do you know what could be causing the white rash on the leaves?