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Took some cuttings of a Michelia Figo aka Banana Shrub this past February here in Florida. Kept in my garage on a heat mat and under lights as seen in the cups. Anyone ever seen anything rooting like this before?
I didn't examine my other cuttings but they all seem to be growing after a pretty long period in the cups, almost 5 months.
Thanks Gourd. The other cuttings have actual roots, when I repotted this one I lost it to dehydration. I didn't put it back in the cup, so if you try this, I'd try cutting holes in the cups to let it acclimate to lower humidity.
I've had great success with it and swear by it. I especially like that with air-layering there is little to no chance of loosing the limb or section if the rooting effort fails, although I've never had one fail. It's super easy. You can buy kits specifically designed for air-layering, but I just nick the plant on one side where I want the roots to grow and then wrap some damp sphagnum moss around it held in place with plastic wrap and twist-ties. I like plastic wrap so I can see the roots grow through the sphagnum, but you can use just about anything you can wrap around the area: foil, etc.
The idea is just to form a make-shift 'pot' of sorts in the air around the nicked stem, something to hold the rooting material (sphagnum moss, etc) in place until roots form. Once the roots are sufficiently well developed, you just sever the stem below the root ball and plant it in soil. Very easy and no risk of the leaves collapsing before roots can form.
The whole purpose of my posting was to give people an idea of an easier way to propagate this plant which is normally done by air layering. It don't get any easier than cuttings in soil. I tried air layering once and messed it up, didn't put foil on the cutting and it cooked. Thanks for sharing that, now people reading this will have two ideas of propagation in one thread ;-)