Flat Lava

Flat lava brings an aged, natural look from day one. It is a surface stone, collected from the ground rather than quarried, so it carries green moss and lichen on its black face. That living finish makes a new path look like it has been there for years. Its flat shape makes it walkable, and it is a favorite for paths beside ponds, streams and some water features, especially in shade gardens and Asian-style designs.

Black stone with moss and lichen

The black base sets off green moss and pale lichen. Together they give a soft, woodland feel.

Moss and lichen need some moisture and shade to stay healthy, so place the stone where it will not bake in full afternoon sun.

The flat shape is why it is often used in walkways. The moss and lichen keep a path from looking manufactured.

Paths around ponds and water

Flat lava is often laid as stepping stones or a walkway along a pond or stream. See our water feature ideas.

Not every stone suits constant water or treated water. Tell staff how it will be used, and read choosing stone for water features.

Setting it on a soft base

If you want moss to grow between stones, use a soft base of sand or soil rather than mortar. See soft set vs hard set.

Avoid pressure washing, which strips moss and lichen. A gentle rinse is enough.

Popular uses

• Pond-side walkways
• Stepping stones
• Shade garden paths
• Asian-style gardens
• Stream edges