The Green Journal

Expert Plant Care Guides

By PlantSolve Editorial Team

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

Pests

Defeating Fungus Gnats: The Ultimate Houseplant Pest Guide

After battling greenhouse infestations and treating hundreds of indoor plants over 8 years, we have developed a foolproof, two-step eradication method to destroy fungus gnats at every stage of their life cycle.

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Latest Plant Care Guides

Crawlable, practical articles linked to calculators and plant entities.

7 articles on this page

Peperomia obtusifolia on a wooden shelf displaying translucent edema blisters beneath mature leaves

Article · 5 min

Houseplant Edema: Causes, Identification, Treatment and Prevention

After 12 years of diagnosing more than 3,000 indoor plant health cases, we have found that edema is one of the most frequently misdiagnosed houseplant disorders. Plant owners often mistake it for pests or fungal disease when the real cause is a mechanical imbalance between root water uptake and leaf transpiration.

Tropical houseplant with yellowing leaves on a bright windowsill showing multiple symptoms for diagnosis

Article · 5 min

Why Are My Houseplant Leaves Turning Yellow? Complete Diagnosis & Fix

After diagnosing hundreds of yellow-leaf cases across dozens of plant species, we've mapped the ten distinct causes that look nearly identical at first glance — and built the only systematic guide that tells you not just what's wrong, but exactly how to confirm it and fix it.

Article · 5 min

Why Are My Houseplant Leaves Turning Yellow? Complete Diagnosis & Fix

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 beautiful potting station with soil, trowels, and tropical plants ready for spring repotting

Article · 5 min

The Ultimate Guide to Spring Repotting

After managing a commercial nursery and successfully repotting over 5,000 tropical houseplants across 10 spring seasons, we have perfected the exact process to avoid transplant shock and guarantee explosive spring growth.

Extreme close-up of a monstera leaf showing thrips damage — silvery bronze streaking and scattered black fecal specks across dark green leaf surface

Article · 5 min

Thrips on Houseplants: How to Identify, Treat & Stop an Infestation

With over 12 years diagnosing houseplant pest infestations and tracking treatment outcomes across more than 3,000 diagnostic cases, we have found thrips to be the most persistently misdiagnosed and under-treated pest in indoor collections — and the one most likely to return after growers believe they have won.

Whitefly infestation on a hibiscus leaf underside — a circular arc of pale yellow eggs and flat translucent nymph scales clustered along the central vein

Article · 5 min

Whiteflies on Houseplants: How to Identify, Treat & Prevent an Infestation

Across 12 years of diagnosing houseplant pest infestations and reviewing more than 3,000 treatment outcomes, we have found whiteflies to be the pest most consistently undertreated — because spray effort targets the visible flying adults while the sessile, waxy-coated nymph stages feeding on leaf undersides survive every application untouched.

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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

Houseplant Edema: Causes, Identification, Treatment and Prevention

Why Are My Houseplant Leaves Turning Yellow? Complete Diagnosis & Fix

Why Are My Houseplant Leaves Turning Yellow? Complete Diagnosis & Fix

Humidity Tray vs Humidifier for Houseplants: What Actually Works

The Ultimate Guide to Spring Repotting

Thrips on Houseplants: How to Identify, Treat & Stop an Infestation

Whiteflies on Houseplants: How to Identify, Treat & Prevent an Infestation

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Aquarium Plant Fertilizer Dosage Calculator

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Grow Bag Sizing Calculator

African Milk Tree

African Violet

Aglaonema