QuestionHi Nick, I have lots of different colored pentas and all flourish except for the white ones. I care for them the same way - keep them watered regularly, snip off the dead buds and keep them trimmed - but they tend to die off. Are they just less hardy?
AnswerI too have had difficulty with the white varieties,,but can't seem to find out why, but unlike the more common ones , they seem to prefer afternoon shady conditions (which shouldn't be...); but they still seem much less vibrant and never achieve the robust growth of the others. Try growing them in containers, where you can move them about for a more controlled environment, while supplying them with a better growing medium also. Nick