Latest from the SoilTune Blog
Expert guides, product comparisons, troubleshooting tips, and the latest in precision agronomy.
Active filters: Sort: Most Popular Clear filters
Cannabis pH & Nutrient Lockout: The Complete Grower’s Guide
Master growing weed ph: soil 6.2–6.8, soilless 5.8–6.2. Diagnose lockout with our runoff pH/EC matrix and fix it with the 3-step flush protocol.
Read Article
What Should the Soil pH Be for Tomatoes, Peppers & Potatoes?
Ideal soil pH for tomatoes is 6.0-6.8 (best 6.2-6.5). Get exact ranges for peppers, potatoes & onions plus a sulfur amendment calculator. (2026)
Read Article
How to Raise Soil pH: The Science of Lime, CEC, & Busting Baking Soda Myths
Learn how to raise soil pH with agricultural lime, CEC calculations & buffer pH tests and why baking soda destroys soil. Free lime calculator inside.
Read Article
The Ultimate Azalea Potting Soil Mix: DIY Recipe & Container Guide
Get the exact azalea potting soil mix recipe: 40% pine bark, 30% peat moss, 20% perlite. Keep pH 4.5–5.5 with our 12-month container care calendar.
Read Article
How to Change Hydrangea Color: The Complete pH + Aluminum Protocol for Blue or Pink Blooms
Change hydrangea color with science: aluminum sulfate doses by pH band for blue, dolomitic lime for pink, plus the phosphorus trap fix that ends failures.
Read Article
Lawn Soil pH Test Kit: Complete Testing & Correction Guide
Learn how to test lawn soil pH with our step-by-step guide. Compare test kits, diagnose turfgrass problems & get exact sulfur/lime rates for your soil...
Read Article
Ferrous Sulfate for Plants: Fix Iron Chlorosis & Soil pH
Learn how to use ferrous sulfate for plants to cure yellow leaves from iron chlorosis. Get exact mixing ratios, foliar vs soil steps, and chelation...
Read Article
The Definitive Soil pH Chart: Crop Ranges & Nutrient Availability
Free pH chart for soil with crop-by-crop ranges, the Truog nutrient availability curve, and texture-based lime & sulfur dosages to fix acidity fast.
Read Article
How to Make Soil Acidic for Blueberries (Safe Science Guide)
Learn how to make your soil acidic for blueberries (pH 4.5-5.5). Get exact elemental sulfur rates by soil type and avoid aluminum toxicity.
Read Article
How to Use Aluminum Sulfate to Lower Soil pH (Safely & Quickly)
Aluminum sulfate for soil pH works in days, not months. Get exact dosages, toxicity thresholds, and a speed-vs-safety matrix before you apply.
Read Article
Elemental Sulphur Fertilizer vs. Sulfate: Forms, Rates & Uses
Compare elemental sulphur fertilizer and sulfate sulfur. Learn the difference between elemental sulfur powder, pelletized sulfur for lawns, and bulk applications.
Read Article
Can You Apply Fertilizer and Lime at the Same Time? The Chemistry Explained
Can you apply fertilizer and lime at the same time? Learn the chemistry behind mixing them, which fertilizers are safe, and how to avoid wasting...
Read Article