disease

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  Manolo MJF
• 14-Dec-2025

Cal-Mag in cannabis growing without myths: when it is truly needed, when it harms plants, how LEDs and VPD affect calcium and magnesium uptake.

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  Manolo MJF
• 14-Dec-2025

Why cannabis plants do not absorb nutrients: transpiration, roots and nutrient lockouts explained step by step, with practical diagnosis and solutions.

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  Manolo MJF
• 12-Dec-2025

VPD in cannabis cultivation explained simply: how to measure it, correct ranges for veg and flower, a clear VPD table, and how to fix problems step by step.

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  Manolo MJF
• 13-Sep-2025

Integrated Pest Management (IPM) in home cannabis cultivation is a plan for pests before they even show up. Learn how to use product rotations (without spinosad), predatory mites and growroom hygiene, all adapted to European realities.

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  Manolo MJF
• 11-Sep-2025

More and more growers use Cal-Mag when growing under LEDs and with filtered water. But does every plant really need it? Find out when calcium and magnesium supplementation is a lifesaver and when it can do more harm than good.

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  Manolo MJF
• 05-Sep-2025

How to read cannabis leaves in coco, DWC/RDWC, aeroponics, rockwool and other media. pH/EC ranges, the most common symptoms (Ca/Mg, K, Fe…), quick fixes and “false alarms” (root oxygen, solution temperature, spray nozzles). Tables + downloadable charts.

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  Manolo MJF
• 01-Sep-2025

Foxtailing in cannabis: when it’s a light/heat problem vs. just the cultivar. How to stop it in 24–48 h and protect density, flavor, and resin.

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  Manolo MJF
• 01-Sep-2025

Where do hermaphrodites and “nanners” in flower come from? Most common causes (light leaks, stress, genetics), simple prevention (dark test, timer, T/RH), how to identify on the plant, and a rescue plan: removal, misting, isolation, when to chop and when to finish with minimal seeds.

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  Manolo MJF
• 23-Aug-2025

A practical, step-by-step guide to diagnosing leaf changes in cannabis. Learn how to spot different leaf spots, colors, causes of disease, deficiencies, pests, and unwanted growing conditions with clear explanations. Keywords: cannabis leaf problem guide, diagnose leaf spots.

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  Manolo MJF
• 23-Aug-2025

A detailed calendar of cannabis diseases in a temperate climate – your monthly guide to outdoor and greenhouse threats. Learn when to expect mold, rot, and pests, how to protect your crop, and keep harvests healthy all season long. Outdoor mould calendar and cannabis disease season made simple for growers.

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  Manolo MJF
• 23-Aug-2025

Learn about the real risks of algae and biofilm in hydroponic systems. Discover how these hidden threats disrupt water quality, sensor readings, and plant health—even if they don’t cause direct disease. Practical tips from a seasoned grower for managing “algae hydroponics” and “biofilm in the tank

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  Manolo MJF
• 23-Aug-2025

Discover how to identify, prevent, and manage collar/crown rot in cannabis (crown rot cannabis). Learn about the key symptoms near the soil line, the impact of watering routines, and related root diseases that threaten healthy grows. Essential knowledge for growers who want to avoid stem base rot and maintain vigorous plants.