What’s the problem?
My peace lily’s roots are escaping.
Diagnosis
When roots start growing through the drainage holes, it’s a sign the plant may be root-bound, meaning it has outgrown its pot. While some plants, such as succulents, can tolerate being root-bound, others – such as monsteras and peace lilies – can suffer from stunted growth, drooping leaves due to water retention, or even nutrient deficiencies.
Prescription
First, gently lift the plant from its pot to check its roots. If they are tightly circling the root ball, it’s time to repot into a container 3-5cm (1-2in) larger in diameter, with fresh, well‑draining soil. If the roots are not densely packed, you can hold off on repotting and instead tuck in or trim any excess root growth. For plants that dislike repotting (fiddle-leaf figs, for example), you can replace the top layer of soil with fresh compost to refresh nutrients.
Prevention
Check your plant’s roots annually to prevent overcrowding. Keeping an eye on drainage and ensuring pots aren’t too small will help prevent stress and keep your plant thriving.
Got a plant dilemma? Email saturday@theguardian.com with ‘Houseplant clinic’ in the subject line
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