September 9, 2014
Yes, washing it would be a good idea. Make up a spray bottle with a solution of 1 teaspoon mild dish detergent to 2 cups water. Spray all over the plant, especially up onto the underside of the leaves, and down into the nooks and crannies in the center. Let it sit for 20 mins or so, then wash it all gently with a hose. Looking through a wide variety of rhipasalis info, I can't find any disease that produces "weeping sap." I think it's almost sure your plant has some kind of sucking insect - some scales or aphids are almost invisible, and it doesn't take but a few to start dripping that honeydew, which is easily mistaken for sap. Wash the plant in the same way, at weekly intervals for 4 weeks, and you should eradicate the little buggers.
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