Propagation Grade Pumice, Triple Screened Volcanic Rock 1/8 to 1/64 Inch, Seed Starting and Cutting Propagation Soil Amendment

Triple-Screened Propagation Grade Pumice

1/8–1/64 Inch | Natural Oregon Volcanic Pumice

Give your seed-starting and propagation mixes a carefully screened mineral ingredient with our Propagation Grade Pumice!

This fine-grade pumice is triple screened to remove approximately 90% of the fines found in our single-screened product. It is an excellent addition to seed-starting mixes and cutting propagation blends.

Why Choose Triple-Screened Pumice?

• Propagation grade: Suitable for seed-starting mixes and cutting propagation.

• Triple screened: Approximately 90% of the fines removed compared with the single-screened product.

• Controlled particle size: Approximately 1/8–1/64 inch.

• Hand screened: Pumice larger than 1/8 inch is removed.

• Clean natural material: No rocks, roots, or other debris.

• Natural volcanic product: Mined in the Southern Cascade Mountains of Oregon.

How to Use

Add approximately 15%–30% pumice to a peat/perlite-based mix.

Use this fine-grade pumice as an ingredient in your preferred propagation or seed-starting recipe. Adjust the blend to suit the plants and propagation method you are using.

Available Sizes

Choose from the following quantities:

• 15 ounces

• 10 cups

• 5 quarts

• 3 gallons

• 6 gallons

• 12 gallons

Container Filling Guide

These are the nursery's stated filling estimates.

Shipping Information

Prices include shipping.

• 15 ounces: USPS First-Class Mail

• 10 cups, 5 quarts, and 3 gallons: USPS Priority Mail

• 6 and 12 gallons: UPS

Natural Oregon Volcanic Pumice

Our pumice is mined in the Southern Cascade Mountains of Oregon.

Often called the “rock that floats,” pumice is a naturally occurring volcanic material filled with tiny gaps and air pockets.

The pumice is hand packed in bags with reusable ties, making it convenient to close and store after using part of the package.

Storage and Dust Precautions

If the pumice dries before use, lightly moisten it to help prevent dust from forming.

Dust from pumice and other rock or potting soil products should not be inhaled and may irritate people with sensitive lungs. Avoid creating dust when handling the product.

Add clean, triple-screened Oregon pumice to your propagation supplies and create a custom growing mix for your gardening projects!