The Green Journal

Expert Diagnostic Guide Plant Care Guides

By PlantSolve Editorial Team

Explore our collection of diagnostic guide plant care guides and practical articles.

Plant Health & Diagnostics

Bacterial vs Fungal Leaf Spot in Houseplants: Diagnose It Right, Treat It Right

With over 12 years of plant pathology diagnostics and more than 2,100 leaf spot cases assessed across tropical and subtropical indoor collections, we have developed a four-observation framework that separates bacterial from fungal leaf spot in a single visual assessment.

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Latest Plant Care Guides

Crawlable, practical articles linked to calculators and plant entities.

5 articles on this page

Overhead view of a Calathea orbifolia leaf with distinct brown crispy tip and yellow margin band, against a white background with a watering can

Article · 5 min

Why Do My Houseplants Have Brown, Crispy Tips?

With over 15 years of indoor plant diagnostics and more than 3,000 leaf-tissue cases analyzed, we've mapped the exact mechanisms behind brown crispy tips—fluoride accumulation, salt toxicity, and humidity deficits—so you can reverse damage today.

Pebble tray filled with water beneath a terracotta pot holding a Calathea with patterned leaves on a wooden shelf

Article · 5 min

Humidity Tray vs Humidifier for Houseplants: What Actually Works

With over 14 years of indoor climate management across more than 1,800 diagnosed humidity-failure cases — from browning Calathea tips in air-conditioned apartments to crisping Alocasia leaves during dry winters — we've measured exactly how much humidity each method actually delivers at leaf level, and the gap is larger than most plant owners expect.

A leggy Rubber Plant in a terracotta pot with long bare stem and small pale leaves leaning toward a bright window

Article · 5 min

Leggy Houseplants: What Causes Etiolation and How to Fix It

With over 13 years of plant growth diagnostics and more than 2,100 etiolation and light-deficiency cases assessed across species from compact succulents to large-leafed tropicals, we've developed a precise protocol for diagnosing the cause of leggy growth, correcting it without shocking the plant, and preventing recurrence through light and pruning management.

Close-up of a philodendron stem at soil level showing a soft dark sunken patch on one side of the lower stem while the upper growth remains firm and green

Article · 5 min

Stem Rot in Houseplants: How to Diagnose It, Save the Plant, and Prevent It from Returning

With over 12 years of houseplant pathology diagnostics and more than 1,800 fungal stem infection cases assessed across tropical and subtropical indoor growing environments, we have mapped the precise conditions under which Pythium, Fusarium, and Rhizoctonia colonise houseplant stems — and developed a triage protocol that more than doubles plant survival rates when applied within the first 72 hours of visible symptoms.

White fluffy saprophytic mold covering the surface of moist dark potting mix in a terracotta pot with a healthy Pothos trailing beside it

Article · 5 min

White Mold on Houseplant Soil: Causes, Treatment & Prevention

With over 12 years of houseplant disease diagnostics and more than 2,400 soil-pathology cases reviewed across tropical and semi-arid climates, we've mapped every form of white growth that appears on potting mix — and the vast majority of what you're seeing right now is not what you fear.

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Turn article insights into decisions with calculators, plant pages, and a quick personalized quiz flow.

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Aquarium Plant Fertilizer Dosage Calculator

Calculate exact macro and micro fertilizer doses for your planted aquarium based on tank volume, plant density, CO2 system, and dosing strategy.

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Fertilizer Calculator

Calculate the exact fertilizer dose and feeding schedule for your plant based on species, pot size, growth stage, and season.

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Grow Bag Sizing Calculator

Find the perfect grow bag size for your plant based on root depth, plant type, and expected mature size.

Plant Guide

African Milk Tree

The African Milk Tree is a towering, architectural succulent that looks like a cactus but behaves entirely differently. It is famous for its extreme drought tolerance and its highly toxic white sap.

Plant Guide

African Violet

African Violets are classic indoor bloomers, but their fuzzy leaves demand a unique watering approach. We break down the 'bottom-watering' technique essential for preventing crown rot and triggering year-round flowers.

Plant Guide

Aglaonema

After growing and propagating over 120 Aglaonema specimens across beginner and advanced cultivars in centrally heated homes and low-light interiors over the past 8 years, our team has mastered the precise balance of light, water, and humidity this plant demands — from the dry air of winter radiators to the overwatered pots of summer.

Latest Plant Care Guides

Why Do My Houseplants Have Brown, Crispy Tips?

Humidity Tray vs Humidifier for Houseplants: What Actually Works

Leggy Houseplants: What Causes Etiolation and How to Fix It

Stem Rot in Houseplants: How to Diagnose It, Save the Plant, and Prevent It from Returning

White Mold on Houseplant Soil: Causes, Treatment & Prevention

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Aquarium Plant Fertilizer Dosage Calculator

Fertilizer Calculator

Grow Bag Sizing Calculator

African Milk Tree

African Violet

Aglaonema