I agree with the others, since both severums, and Uaru are minimally considered at least 50% vegetarian cichlids, the reality of keeping plants in their tanks, is a bit delusional.
I find the best way to keep plants with many of these vegetarian, or even semi vegetarian cichlids, is to do heavily planted sumps, separate from the main cichlid tanks.
Below is my planted sump



In this way, I get the nitrate absorbing benefits, and aethsetic beauty of aquatic plants like water lilies, and vallisneria, and semi-aquatic plants like mangrove trees, and terrestrials such as dieffenbachia, without the destruction the cichlids often impose.
I do find that mangrove trees (the middle pic) are tough enough to escape even the hungriest of herbivores.
I have also tried papyrus with some success, but they were even eaten down to nubs by grazers like Cincelichthys such as bocourti and pearsei.
Below, papyrus, in a Madagascan biotope tank I had.


Below my current main 180 gal tank, (left) in tandem with he planted 125 gal sump on the right.
