I have several plumeria in pots and it seems that as soon as a new leaf forms and opens, a leaf at the bottom yellows and drops. Is this normal?
Certified GKH Gardening Expert
Plumeria do normally lose some leaves, and it sounds like your plant still has plenty of leaves so it is probably fine. Yellowing and loss of leaves can be caused by over- or under-watering or by insect infestations so do check whether either of these could be occurring.