Lava Rock Installation

What This Service Involves

Lava rock is a featherweight, air-pocketed volcanic stone available in rust-red and near-black shades that pop against green Northwest foliage. Its porous surface holds moisture and moderates soil temperature, acting like a long-lasting decorative mulch that never needs annual reapplication. Gardeners around Seattle and Everett like it for accent beds, fire-feature surrounds, and low-maintenance strips where organic bark would rot. Because it is so light, it stays best in contained beds with solid edging rather than open, sloped areas.

Benefits

Insulates soil and helps retain moisture between rains; Never breaks down like bark, so no yearly top-dressing; Bold, lasting color for accent beds and borders; Lightweight and easy to spread over large areas; Non-flammable, making it well suited to fire-pit surrounds

Our Process

1) Shape and grade the bed and confirm drainage away from plant crowns; 2) Install landscape fabric to keep the porous rock separated from soil; 3) Set a thin leveling base so the bed lies flat and contained; 4) Spread lava rock evenly over the fabric-lined bed to a uniform depth

What Affects the Cost

Coverage area and desired depth of the rock layer; Color selection between red and black lava; Quality and secure edging to keep lightweight stone in place; Removal of old mulch or existing ground cover; Freight, since volcanic rock is often shipped from a distance

Best Time of Year

Lava rock can be placed any time of year, though installing in spring lets its moisture-holding benefit help beds through the drier summer months.