question for you all, i have about 10 Haemanthus coccineus, right now their leaves are begining to die back, but ones leaves i notice have bright yellow spots towards the ends of the leaves. not all over the leaf, just the end. is this a virus, or could it just be the leaf dying back? none of the other ones are doing this, they are just dying back normally. i looked online and couldnt find any info on virus of Haemanthus coccineus. thanks!