With Fall just around the corner it is now time to check your Adenium obesum for problems before they go dormant for the winter. There is still some adenium growing time so take care of problems now. One of the most common problems is stem root and leaf disease. Stem rot occurs on the tips of the adenium desert rose plants and progresses down the stem. Leaf rot occurs in adeniums when the leaf is continually wet.
Fist, leaf rot in adeniums is the easiest to treat. Just remove the effective leafs on he desert rose plant and move the location of the adenium so the leaves dry out. When you water try not to wet the leaves or if your plants are watered using sprinklers make sure you do it early in the day so the leaves have time to dry out quickly. Do not water adeniums in the evenings. If you are in the tropics or desert this is not usually a problem because even the nights are still warm enough to dry out the leaves of the adeniums fast.
Stem Roots Rot
Desert rose plant stem root is caused by a fungus. It’s the most common problem with adeniums. The adenium rot is either black, dark drown or yellow. The actual desert rose rot part can be wet or dry and it processes down the stem of the adenium. When we see this we do not wait for he plant to fight the problem we cut the effective part off the plant. When cutting off the stem make sure you look inside the stem and make sure the adenium plant cut is far enough down so you only see good tissue with discoloration. Adeniums may stop this rot by forming a abscission zone. This zone happens more in desert regains than in tropical, humid and cooler climates. One sure sign of stem rot on desert rose plants adenium obesum is when the leaves start to fall of on the tip and turn brown.
White leaf fungus on adeniums
There is one leaf disease reported that we have not seen yet. It’s a white fungal adenium disease that affects the leaf first and then kills the rest of the plant. The fungus will spread to other adeniums quickly so if you encounter this problem remove the infective desert rose plant to an insulation area. If the problem gets to the stem then the plant usually dies. Since we have not encountered this problem we do not know if cutting off the infective stem will save the desert rose plant or not. Again the main cause of this and other leaf problem is caused by too much water. It’s important that the leaf of the desert rose plants does not stay continually wet.