However, once the plants are established they grow rapidly and shade out weed growth below the leaf canopy.
(the plants; are established; ) (they; grow; rapidly; T:once the plants are established) (they; shade out; weed growth below the leaf canopy; T:once the plants are established)
the plants they they
are established grow shade out
rapidly T:once the plants are established
weed growth below the leaf canopy T:once the plants are established