I have over-Wintered three Strelitzia plants (grown from seed last year) in the bathroom and now Spring has arrived there are some brownish blotches on the leaves which I have sprayed with a fungicide. The growing point looks healthy also the stems and the compost is moist but not soggy. I re-potted the plants once they started into growth this Spring.
Does anyone else grow these and have they had similar problems? Any idea what the pest or disease is please? There is no sign of visible insect life that I have noticed.