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Plant Watering Blog
Field notes, watering science, and the slow art of self-watering terracotta.
How to Save an Overwatered Plant
Save an overwatered plant by stopping water, unpotting to check the roots, trimming any rot and repotting into fresh dry mix in a smaller pot.
Hard Water and Houseplants: White Crust and Brown Tips
Hard water leaves white carbonate crust and slowly raises soil pH, so flush pots regularly and switch sensitive plants to rainwater.
Do Moisture Meters Actually Work? An Honest Look at What They Measure
Cheap moisture meters work only roughly because they read conductivity, not water, so salts, compaction and probe placement all skew the reading.
Why Isn't My Plant Growing?
Most stalled houseplants are light-limited rather than hungry, so move the plant somewhere brighter before you feed it and expect slow winter growth.
Why Do My Houseplants Keep Dying? The 6 Usual Causes
Overwatering kills more houseplants than anything else by suffocating roots, and five other fixable habits explain nearly every plant you have lost.
How to Quarantine a New Houseplant
Quarantine every new houseplant in a separate room for two to four weeks, inspecting leaf undersides and soil weekly before it joins your collection.
Leggy Plants: Why It Happens and How to Fix It
Leggy growth is etiolation caused by too little light, so move the plant somewhere brighter, prune hard to force branching, and stop over-feeding it.
Mealybugs on Houseplants: How to Get Rid of Them
Mealybugs hide under a waxy coating that repels sprays, so dab each one with 70 percent isopropyl alcohol and repeat weekly for a month.
Why Is My Plant Dropping Leaves?
Which leaves drop tells you the cause: light change sheds sun leaves, root rot drops the lowest leaves, drought drops them everywhere.
Fungus Gnats: Why You Have Them and How to Get Rid of Them
Fungus gnats breed in permanently damp topsoil, so drying the top 2-5 cm between waterings removes their habitat and ends the infestation.
Spider Mites: How to Spot Them and Get Rid of Them
Spider mites cause fine pale stippling on leaf undersides in hot dry air, and clearing them takes repeat sprays every five to seven days.
Root Rot: How to Identify, Treat, and Prevent It
Root rot starts as oxygen starvation in waterlogged soil, and rotted roots turn brown, go soft and slough their outer layer when pulled.
The Finger Test vs Moisture Meters: Which to Trust
Trust the finger test over a cheap moisture meter, and use pot weight or a wooden skewer when the pot is too deep to read by hand.
Tap Water vs Filtered vs Rainwater for Houseplants
Tap water is fine for most houseplants, but filtered or rainwater is worth it for fluoride-sensitive species and in hard-water areas.
Crispy Brown Leaf Edges: The Four Usual Causes
Crispy brown leaf edges usually mean fertiliser salt buildup, hard water, erratic drying or root damage rather than low humidity.
Salt Buildup: The White Crust on Pots and Soil Explained
The white crust on pot rims and soil is fertiliser salts plus hard-water minerals, hard and gritty rather than fuzzy, and thorough leaching removes it.
How to Water Large Floor Plants You Can't Lift
Water large floor plants with a measured volume applied in two slow passes, then remove standing water from the saucer within thirty minutes.
Should You Water on a Schedule or on Demand?
Water houseplants on demand rather than by the calendar, and use a recurring reminder to check the soil instead of to pour water.
How to Flush Houseplant Soil to Clear Salt Buildup
Flush houseplant soil by running water equal to about twice the pot volume slowly through the mix, draining fully, and repeating every 3 to 6 months.
How to Rehydrate Bone-Dry Soil That Repels Water
Bottom-soak the pot in 2-4 inches of water for 20-45 minutes to rehydrate bone-dry hydrophobic soil, then break the surface crust and repot if needed.
Why Water Runs Straight Through the Pot
Water runs straight through the pot because dry peat turns water-repellent and shrinks from the wall, so it channels down the gap instead of soaking in.
How Much Water Does a Houseplant Need Per Watering?
Water by pot size, not plant type: roughly 1 cup for a 6-inch pot, 1.5 to 2 cups for an 8-inch and 3.5 to 5 cups for a 12-inch pot.
Do You Need to Empty the Saucer? Why Standing Water Kills Roots
Yes, empty the saucer within about 30 minutes, because standing water floods the pore spaces roots need for oxygen and wicks salts back up.
Should You Water Until It Drains? The Case for Thorough Watering
Yes, water until roughly 10 to 20 percent runs out of the holes, which wets the entire rootball and carries accumulated fertiliser salts away.