Mandevilla - Knowledgebase Question

Pismo Beach, Ca
Avatar for maipepper
Question by maipepper
November 3, 2005
I have 2 Mandevilla vines along a fence line. One is growing beautifully and the other is starting to lose leaves and the leaves are turning yellow, not producing any more new growth. I was wondering if the vine needed nitrogen fertilizer or some other additive to the soil.
Thank you, Maile Doolittle

Answer from NGA
November 3, 2005
Mandevilla likes heat and sun, it needs full direct sun all day and an evenly moist soil, meaning damp but not sopping wet or saturated. It needs a spot with good air circulation. It also needs regular fertilization during the summer with a water soluble fertilizer such as 10-10-10 and/or a slow release fertilizer. Read and follow the label instructions.

Based on your description, I am not sure if your plant might have a fungal or bacterial infection, or if it is just in need of fertilizer. It may also have been exposed to too much cold during some of the recent cold nights. If you can adjust the growing conditions a bit, perhaps it will improve. If it continues to lose leaves, you might want to consult with your retailer or with your county extension. Good luck with your plant!

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