Growing Knowledge

Stone Wool & Hydroponic Growing Blog

Expert guides on substrates, greenhouse cultivation, and professional horticulture — from the SPELAND distributor team.

Substrate Guide

Stone Wool vs Rockwool: What's the Difference?

Growers often use these terms interchangeably — but there are real differences in fibre structure, density, and performance.

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Greenhouse Crops

Stone Wool for Greenhouse Tomatoes: Complete Growing Guide

How to select the right slab density, manage irrigation, and maximise fruit set with stone wool substrates.

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Beginner Guide

Hydroponic Growing Substrates: The Complete Comparison

Coco coir, perlite, clay pebbles, stone wool — which substrate performs best for which crop?

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Vertical Farming

Stone Wool in Vertical Farms: Why It Outperforms Alternatives

Sterility, consistency, and weight savings make stone wool the substrate of choice for multi-tier indoor growing.

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Microgreens

Growing Microgreens on Stone Wool Tiles: A Grower's Guide

Food-safe, pathogen-free stone wool tiles produce clean, consistent microgreens cycles — here's how to get started.

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Floriculture

Stone Wool for Rose Production: Stem Quality & Yield

How stone wool slab density affects stem length, flower head size, and overall cut-flower quality in commercial rose greenhouses.

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Nutrient Management

Managing EC & pH in Stone Wool — The Essential Guide

Target ranges, measurement frequency, and how to correct EC and pH drift in stone wool slab systems.

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Irrigation

Drip Irrigation Setup for Stone Wool Slabs — Step by Step

Emitter placement, drain-to-waste vs recirculation, irrigation frequency, and avoiding dry spots in your substrate.

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Greenhouse Crops

Growing Cucumbers on Stone Wool: From Transplant to Harvest

High-wire cucumber production requires precise substrate management. Learn the key parameters for maximum yield.

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Buying Guide

How to Choose the Right Stone Wool Substrate for Your Crop

Plug, cube, or slab? High-density or standard? A practical framework for matching SPELAND products to your growing system.

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Export & Trade

Importing Stone Wool Substrates: What Every Distributor Needs to Know

Incoterms, phytosanitary certificates, container loading, and customs for stone wool growing media shipments.

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Product Comparison

SPELAND vs Grodan: Stone Wool Substrate Comparison

How do Russian-made SPELAND substrates compare to the market leader? A data-driven look at performance, price, and availability.

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Industry News · 2025

Vertical Farming Market 2025–2026: Growth Trends Driving Stone Wool Demand

The global indoor farming market is expanding at 25% CAGR. Here's what it means for substrate sourcing and supply chains.

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Regional Focus · Middle East

Water Scarcity & Hydroponics: Stone Wool Transforming the Middle East

Gulf states face extreme water stress. How Saudi Arabia, UAE, and Qatar are betting on stone wool hydroponics for food security.

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Leafy Greens

Growing Lettuce on Stone Wool: The Commercial Grower's Complete Guide

Seed to harvest in 28–35 days. EC targets, tipburn prevention, and how to maximise annual turns per square metre.

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