Adenium spider mites problem
Q: I have a question about spider mites. I have about 50 desert roses some I received from you and some from other growers. They are all dropping leaves and I can’t figure it out. At first I thought maybe it was because I wintered them in my plant house with a constant 70 degree temperature and they are now shedding their leaves. But I’m noticing that even the new leaves coming out are turning yellow and dropping off. I’ve pulled several out of their pots to check for rot rot, but all looks good. I pay special attention to how much water they get and check them weekly. I’ve had an issue with keeping spider mites off them (which is a constant challenge). I know that they can cause leaf drop. Is there a soil drench that can be used to help with that? What do you use? So, with this information, what do you suppose is going on? Thanks
Problem resolution
A: We rarely have problems at our Epic Grower LLC nursery with spider mites on the adeniums. Usually leaf drop off is due to watering and/or nutrient problems in the soil. Mites will suck nutrients out of the adenium leaves and cause drop. We use Bryer and Nutra products on the desert roses when we see a problem.
If you suspect mites to be a problem I would remove all dirt and leaves to start fresh on all plants. Use a paint brush or similar brush to remove dirt from the adeniums roots. Spry them (roots and all) with Bryer for 3 days before potting. Then give them a boost using Dyna-Gro K-L-N at time of potting (dip them for 30 minutes) and then add K-L-N to the water for the adeniums 2 weeks once potted. Also, spray the desert roses branches and trunk with the Bryer once every 5 days for 3 weeks to make sure no eggs hatch or get laid down. Remember spider mites travel so you may get rid of them on the adeniums but what about other plants in the area? 30 days after re-potting start them on Dyna-gro Grow once a month.
Spider mites are hard to get rid of unless you start fresh because the eggs are microscopic.