Yellow Leaves On Allamanda. Sometimes called golden trumpet vine common allamanda Allamanda cathartica is a perennial flowering vine noted for its leathery dark green foliage and yellow trumpet-shaped flowers. I have taken it outside for a few hours at a time but for the most part it stays inside since its pretty windy on our balcony.
13072020 Sometimes the reasons for yellow mandevilla leaves are from disease pathogens such as Ralstonia solancearum the bacterial pathogen that causes Southern wilt. The glossy lance-shaped leaves are mostly arranged in whorls of 4. I added a small amount of citrus fertilizer about 3 months ago.
A vigorous evergreen fast growing twiner.
Cathartica by the following differences. Cathartica has glabrous stems and leaves that contain milky latex. The leaves first take on yellowy hues. My 2 yo calamondin tree has recently shown yellowing leaves and a few with brownyellow edges.