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Soil pH, Lime, CEC and Fertiliser Guides

Expert guides, product comparisons, troubleshooting tips, and the latest in precision agronomy.

All TopicsSoil Testing(16)Soil Acidification(15)Lawn Care(7)Soil Amendments(1)
Lime, Gypsum and Sulfur Prices: What Soil Amendments Actually CostSoil Acidification
Azmi Mhamed8 min read

Lime, Gypsum and Sulfur Prices: What Soil Amendments Actually Cost

2026 price bands for pelletized lime, agricultural lime, gypsum and elemental sulfur, cost per 1,000 sq ft by target pH change, and the buying mistakes...

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Perlite vs Vermiculite: Which Soil Amendment Does Your Mix Need?Soil Amendments
Azmi Mhamed9 min read

Perlite vs Vermiculite: Which Soil Amendment Does Your Mix Need?

Perlite and vermiculite look alike in the bag and do opposite things in the mix: one drains and aerates, the other holds water. What each...

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Nutrient Deficiency Chart: Leaf Symptoms by DeficiencySoil Testing
Azmi Mhamed8 min read

Nutrient Deficiency Chart: Leaf Symptoms by Deficiency

A leaf-by-leaf chart of N, P, K, Ca, Mg, S, Fe, Mn, Zn, B, Cu and Mo deficiencies: what the symptom looks like, where it...

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Exchangeable Sodium Percentage (ESP): What It Is, How to Calculate It & How to Fix ItSoil Testing
Azmi Mhamed9 min read

Exchangeable Sodium Percentage (ESP): What It Is, How to Calculate It & How to Fix It

What exchangeable sodium percentage measures, the formula used to calculate ESP from a soil test, the threshold bands, ESP vs SAR, and how to lower...

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Hydrangea Fertiliser and Soil pH: How to Feed Them and Change the ColourSoil Acidification
Azmi Mhamed7 min read

Hydrangea Fertiliser and Soil pH: How to Feed Them and Change the Colour

What NPK hydrangeas need, a season-by-season feeding schedule, and why colour is decided by soil pH and aluminium rather than by hydrangea food.

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Hydrated Lime vs Quick Lime vs Slaked Lime: What Is the Difference for Soil?Soil Acidification
Azmi Mhamed8 min read

Hydrated Lime vs Quick Lime vs Slaked Lime: What Is the Difference for Soil?

Quicklime, slaked lime and hydrated lime explained as one material in three stages, with neutralising values, price comparison method, speed of reaction and the mixing...

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Soil pH by Crop: the Reference Table for Vegetables, Fruit and LawnsSoil Testing
Azmi Mhamed7 min read

Soil pH by Crop: the Reference Table for Vegetables, Fruit and Lawns

Target soil pH for every common crop, what goes wrong outside each band, plus detailed pH guidance for lettuce, strawberries, raspberries, blackberries and grapes.

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How to Test Soil Compaction: Four Field Tests You Can Do in an HourLawn Care
Azmi Mhamed8 min read

How to Test Soil Compaction: Four Field Tests You Can Do in an Hour

Probe test, water infiltration test, turf pull and bulk density: four ways to measure soil compaction, how to read the results, and which fixes actually...

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The Best Soil for Grass: Texture, Depth, pH and What to BuyLawn Care
Azmi Mhamed8 min read

The Best Soil for Grass: Texture, Depth, pH and What to Buy

What lawn soil needs (loam or sandy loam, 15-20 cm depth, pH 6.0-7.0, 3-5% organic matter), with jar, screwdriver and pH tests you can run...

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What Should the Soil pH Be for TomatoesSoil Acidification
Azmi Mhamed12 min read

What Should the Soil pH Be for Tomatoes, Peppers & Potatoes?

If you are asking what should the soil pH be for tomatoes, the direct answer is 6.0 to 6.8, with 6.2 to 6.5 as the...

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Split image showing acidic pH 5.0 soil with stunted plant vs limed pH 7.0 soil with healthy plantSoil Acidification
Azmi Mhamed15 min read

How to Raise Soil pH: The Science of Lime, CEC, & Busting Baking Soda Myths

Figuring out how to raise pH soil starts the moment your lab report lands at pH 5.0. Viral videos push baking soda as a quick...

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The Ultimate Azalea Potting Soil Mix: DIY Recipe & Container GuideSoil Acidification
Azmi Mhamed6 min read

The Ultimate Azalea Potting Soil Mix: DIY Recipe & Container Guide

Your azalea potting soil mix decides whether container plants thrive for decades or collapse into chlorotic, root-rotted decline within a single season. Standard potting soils...

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