|Unlike other Mandevilla plants purchased in the past, I have some red Mandevilla SP potted plants that are blooming beautifully but are not growing and with the exception of two plants, ten others have no|
I am sorry for this delayed reply to your gardening question. The spring rush has brought a deluge of questions and we are working hard to catch up!
I can't think of a deficiency that would cause that. I suspect with more warm days, adequate soil moisture and a little feeding with Miracle Gro they'll take off in time. Those plants like warm weather and plenty of sunlight.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!