Mighty 109 Greys Pea Gravel, 40 LBS MIGHTY109 Greys Pea Gravel (average size: 3/8" x 1/4"). Beautiful earth tones of grey, blue, white, and tan. Great as a ground cover or for garden paths and planter beds. Complements almost any landscape. Also great for drainage. New! larger 40 pound size! Shipped via USPS.