On the parapet wall, the new team tried to plant some groundcovers e.g.Acalypha reptans (synonym: A. pendula, A. chamaedrifolia, A. repens; Family: Euphorbiaceae),Polygonum capitatum (synonym:Persicaria capitata; common name: Pinkhead Smartweed, Japanese Knotweed; Family: Polygonaceae), to soften the concrete structure.
2 links on the plants are posted below: