WillC said:@rocketsurgery - Short tip cuttings with just a few leaves propagate more readily than longer, thicker stemmed cuttings with many leaves. Air layering is appropriate only for thick, older, woody-stemmed cuttings.
Cuttings can be propagated in water first or directly into the potting mix. Either way, they will struggle to make the transition as new roots slowly form in the soil. Using a proper pot size, potting mix and watering are all critical to success.
Use the smallest pot that multiple cuttings will fit into snugly. Don't try to anticipate the large-sized pot that they may ultimately need. I suggest a potting mix that is 4 parts plain peat moss and one part perlite. The key is to keep this mix damp, but not wet. As roots are forming, there is little leeway in term of proper moisture. You will have to monitor the soil moisture carefully early-on.
They don't require humidity and I would advise against using plastic coverings for the reason you cited. Warm but not hot temps will promote root growth. Rooting hormones are a waste of money.
I hope that helps you.
tofitropic said:Cissus javana syn Cissus Discolor is a tropical plant, try mimicking their natives environment is the key to grow any plants. It is a natives in my area, here they often grow near streams. It is easily propagated by cuttings, if you can provided warm-humid-tropical condition.... so HUMIDITY is ABSOLUTELY NEEDED for this one.
rocketsurgery said:
My sunroom, packed with plants, is usually around 60-65% humidity. Would you say this is enough?
WillC said:This plant has proven to do well in low indoor humidity so duplicating the native habitat is not necessary. Increased humidity is fine but not in an enclosed space. Your sunroom humidity is fine.
The heating mat is good but just be aware that it can cause the soil to dry out sooner.