Veggie mulching update

I went home yesterday in the middle of the day to find that the ones most recently planted yet not mulched with grass clippings were almost dead from the heat and wind and sun because even though I watered in the am before work, they had dried out in the elements but the ones that had the aforementioned grass clippings were perky, flowering, growing and unaffected by the stress of just one more heat wave. SOOOooo, let your lawn grow extra long, then mow it, let it dry in the sun for a day then collect it and line it up under your veggie plants (don't do this if you used broadleaf weed killers).