Multi-purpose rock, while all of the sizes can be used for a landscaping rock. Washed limestone is a jagged rock that will settle to a extent to help with erosion control. 1 ½ Washed Limestone is used for septic system installation. 3-5 Limestone is often used for construction entrances or entrances used with large trucks.
(Pictured Above: Top Left – 3/8″, Top Right – 3/4″, Bottom Left – 1 1/2″, Bottom Right – 3″-5″)