garden
Spot salt buildup and leaf damage before roots suffer
Brown leaf edges, uneven yellowing, distorted new growth, or a chalky soil ring may point to overfertilization. These symptoms can be mistaken for pests or poor lighting.
Because fertilizer damage resembles watering trouble or pests, it is easy to add more feed in an attempt to help. That can worsen salt buildup around the roots.
Look for white crust on the pot rim, brown tips with green centers, thin or curled new growth, and water that pools on the soil. Pause feeding if any appear.
Extra fertilizer can burn roots and slow growth instead of speeding it up. Constant feeding can build toxic salts in the root zone, leaving leaves curled and edges brown.
Stop fertilizing, then run room-temperature water through the pot until it drains clear. Repeat the flush two or three times to help wash accumulated salts from the soil.
Repot when dense crust prevents water absorption, roots are black or mushy, or the plant is root-bound and has not improved after leaching. Mild cases may recover with patience.
Do not add more fertilizer or overwater a stressed plant. Avoid old or garden soil that retains salts, and consider light and humidity instead of blaming nutrients alone.
A weekly-fed fiddle-leaf fig developed brown tips and a white crust. After its soil was flushed, feeding stopped, and light improved, healthy new leaves returned over time.
Use a well-draining mix and dilute liquid fertilizer to half the recommended strength for houseplants. Flush pots every few months and keep a calendar to prevent accidental overfeeding.
If growth is steady, skip the fertilizer. Most houseplants tolerate too little feed better than too much, and a pause of four to eight weeks can give a stressed plant time to recover.
Keep reading