Buds and flowers are always brown

I have a white mandevilla plant and was wondering why the buds and flowers are turning brown. Have always had mandevillas on my deck and have never had this problem before.

Thanks

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1 Comment To "Buds and flowers are always brown"

#1 Comment By GKH_Susan On 08/06/2019 @ 2:30 am

This is a common issue with potassium and phosphorus deficiencies. Are there any other symptoms, or just this? If there are other symptoms, then it may be a fungal/bacterial issue in the soil. If the leaves appear healthy, then a dose of fertilizer made for mandevillas will correct this.

This article will help to learn when and how to feed these: https://www.gardeningknowhow.com/ornamental/vines/mandevilla/fertilizing-mandevilla-plants.htm ^[1]

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