I've air-dried some in the past, which works ok, but I'm wondering if anybody's tried to preserve it with glycerin. I got a hold of a lot of it cheaply, so I can experiment.

Is it best to cut the stems and put the ends in a vase of glycerin/water solution, or immerse the whole plant in a vat of the mixture?

Since it's such a 'crunchy' (I don't have a better word for it) plant, will it even soak up the glycerine?

Will they stay green?

How will I know when it's fully 'glycerin-ized'?

Thanks in advance for any advice! -- I apologize for the cross-posting, I'm new to the forum.

I imagine that it's got some kind of transport system like flowering plants, so it should take up the glycerine, but aside from a change in color (or guesswork with the level of glycerine in the container, figuring out how much has evaporated and how much has gone into the plant) I don't know how you'd determine the uptake.