1 1

Frequently purchased together

Cultiwool PL flag

Official Reseller

Provision Gardens is an official reseller of this brand.

Our inventory is sourced directly from the manufacturer and/or authorized distribution partners. We do not sell used items or unverified/old stock. This helps ensure product authenticity, freshness, and the high standard you expect.

Cultiwool Mini-Blocks 1.5" x 1.5" x 1.5" - Singles

$0.32
$0.32
Shipping calculated at checkout.

OTHER AVAILABLE SIZES / MODELS:

Singles Case (2250 PCS)
Store Availability

Out of stock at your selected pickup location? If your order is being picked up in Newmarket or Barrie, we’ll automatically transfer available inventory between those two stores, so everything is handled for you.

Not Eligible for Free Shipping

Description

Cultiwool Mini-Blocks are stone wool starter plugs for propagation, supporting seed germination and fast root development in hydroponic and greenhouse starts. These propagation mini blocks work as a clean, consistent propagation media and a dependable growing medium base for young plants when uniformity matters.

Made from mineral fiber derived from basaltic rock, Cultiwool Mini-Blocks are built as a clean and inert growing medium that stays stable in the root zone. The stone wool structure is described as disease and pest free, supporting a sterile propagation environment that avoids harmful bacteria or pollutants that can affect early root and shoot development. Because the substrate is inert, it is designed to avoid locking up or releasing substances, helping keep the root zone more predictable during the propagation stage.

Cultiwool Mini-Blocks are known for uniformity and greater firmness, which helps the blocks maintain shape through typical handling during propagation. The homogeneity of the stone wool is designed to support unrestricted, regular root growth, while the uniform distribution of water and nutrients throughout the block encourages roots to penetrate deeply into the substrate. For growers looking for repeatable results across trays, this consistent structure helps keep early growth conditions more even from plant to plant.

As a hydroponic propagation media, these stone wool starter plugs are positioned for an effortless start-up of propagation under a wide range of propagating conditions. The design focus is a reliable balance in the root zone, pairing strong structure with dependable moisture movement, so young plants can establish with less variability. Cultiwool also highlights RHP-certified stone wool as part of its quality approach, reinforcing the goal of maximum uniformity for controlled water and nutrient distribution within the substrate.

Cultiwool Mini-Blocks are a strong fit for growers starting seeds or rooting cuttings who want sterile, inert stone wool starter plugs with uniformity, greater firmness, and uniform water distribution in a compact propagation format.

Derived From
Basalt
Chalk Rock
Hydrophilic Binder

Frequently Asked Questions
Does basalt help plants directly, or is it mostly for soil structure?

Basalt mostly helps plants indirectly by improving the root-zone environment through better drainage, oxygen flow, and long-term soil stability, while only slowly contributing minerals as it weathers over time. It’s unique because its biggest benefits come from physical soil performance and consistency rather than quick nutrient release like fast-acting amendments.

Read the full guide

Why is chalk rock added to rockwool media?

Chalk rock helps stabilize the root-zone by buffering against sudden pH drops while slowly contributing calcium, which supports strong roots and healthy new growth. It’s unique because it actively resists rapid acidity shifts instead of behaving like a purely inert media ingredient.

Read the full guide

What does a hydrophilic binder actually do in the root zone?

A hydrophilic binder acts like a water-loving glue that helps tiny particles stay evenly placed while also helping water spread and re-wet more uniformly, which supports steadier root function. It’s unique because it improves both physical cohesion and water behavior at the same time, unlike simple adhesives or simple wetting ingredients that only do one job.

Read the full guide

Frequently purchased together

View full details

Product Comparison