Ho Yoku Red Lava Rock (Scoria) – Clean Bonsai Soil Aggregate for Drainage & Texture

Ho Yoku Red Lava Rock (Scoria) – Add Color, Drainage & Structure to Your Bonsai Soil

Sourced in the USA and widely used throughout the Northeast, Ho Yoku Red Lava Rock—also known as Scoria—is a natural, porous volcanic stone that improves soil drainage and structure. Its rich, reddish tone also makes it a popular option for bonsai top dressing, giving your pots a finished, vibrant look.

Each batch is pre-sifted, dust-free, and bagged in resealable pouches. Whether you're building your own bonsai mix or enhancing the surface of your soil, this lava rock adds performance and visual impact.

Why Red Lava?

While both Red and Black Lava (Scoria) function similarly in bonsai mixes, red has become the go-to option for many growers—especially in the Northeast—due to its availability and traditional use. It offers:

• A warm, natural red tone that contrasts beautifully with moss and bark
• The same fast-draining, lightweight texture as black lava
• Popular use as both a soil component and a top dressing

Some growers prefer to mix both colors in their soil to help visually monitor watering and root coverage—or to match their tree and container style.

Key Features

• Also Known As: Scoria – naturally lightweight and porous
• Clean and Consistent: Pre-sifted to approx. 3/8"–1/4", no dust
• No Dyes or Additives: 100% natural red lava rock
• Supports Healthy Roots: Improves airflow and drainage in bonsai soil
• Aesthetic Use: Excellent as a top dressing for refined bonsai presentation
• Multi-Use: Bonsai, succulents, cactus, orchids, and hydroponic mixes

Sizes & Wholesale

Available in 2-quart pouches, 18L bags, and bulk Super Sacks.

Need large quantities for educational programs, repotting workshops, or retail? Contact us for wholesale pricing.

Whether you’re creating a balanced soil mix or adding a beautiful top layer, Ho Yoku Red Lava Rock (Scoria) delivers the color, performance, and quality bonsai professionals rely on.