John Trapp on Psalms 80:9

Verſ. 9. Thou preparedſt room for it] Eſpying out a fit place to plant it in, Ezek. 20.6. and making clean work before it, as ſome render the words,Expurgaſti coram ca. by pulling up thoſe bad and barren weeds the Canaanites, that might have hindred its growth.

And didſt cauſe it to take deep root] viz. by thy digging, dreſſing, watering and mounding it; as of all poſſeſſions, none requireth greater care than that of Vineyards ſaith Cato; and there is peculiar affection in men toward the Vine above all trees, as another obſerveth.