Environmentfromwww.theguardian.com5 days agoHouseplant hacks: Can I reuse my potting mix?Old potting mix can often be revived by refreshing with compost, perlite or coco coir, and fertilizer; discard only if moldy, musty, or pest-infested.
Sciencefromwww.theguardian.com3 months agoHouseplant clinic: why is there a chalky crust on my plant's soil?Mineral salt buildup from hard water or fertiliser causes white crust and brown leaf-tip scorch; flush soil, repot if compacted, and use softer water.