Re: Propagation through corm cutting
In my experience at doing this (which is limited), if the corm stays in ground after fruiting, a lot of the "eyes" will not ultimately produce pups. Cutting the corm up seems to increase pup "yield".
Also, there are other reasons. Sometimes I do not want an old corm corm crowding new plants in the mat. Also, sometimes a plant, or corm will will come out of the ground by falling over, or for other reasons, and will no longer have roots in the soil, so cutting the corm up can yield more plants. If the corm is allowed to just lay on its side, I generally see pups come from the bottom "eyes", but not often from the to ones, so they generally go "to watse". Again, cutting can increase the number of plants. If plants get crowded in a mat, I might remove a plant before it flowers, to make space, and I can cut that corm up for propagation (not very often).
The point is this: in some situations it makes sense to divide the corm for propagation purposes, and it is nice to know, should the need/opportunity arise, that it does work.
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