Here is a list of verbs that start with PLA.
placating, place, placed, places, placing
plague, plagued, plan, plane, planed
plank, planned, planning, plans, plant
planted, planting, plastered, plated, platted
play, played, playing, plays
Hope you enjoy this page of verbs that start with pla and the rest of this verb list site as well.
Did I miss any verbs? Visitors can make this a more useful online resource by listing more verbs in the comments.