Lagenandra have three general growth patterns when it comes to vegetative propagation:
1) They produce runners with daughter plants on the ends. L. narii is an example of that.
2) They have a thick rhizome that creeps at ground level, with daughter plants growing off the rhizome. L. meeboldi, L. thwaitesii are examples of this growth pattern.
3) Daughter plants grow as a cluster around the mother plant on short rhizome extensions, like L. bogneri.
Using a sharp razor blade, sections of the rhizome were cut to divide the plant into 4 separate sections. You can see, each section has significant root mass to ensure that it will grow just fine by itself after division. its important that you use a clean blade that’s sharp. Irregular cuts have a higher chance of getting infected with bacteria that may induce rot.
Plants can take several weeks to get established. If the plant has significant sized leaves, you can remove the older ones, leaving only 2-3 of the newest leaves on the plant. This makes the plant easier to keep upright in the pot and reduces transpiration while the roots get established.