Most houseplants need repotting every 1-2 years, ideally between March and May when growth resumes. Move up by 2-5cm in pot diameter each time. Use peat-free multipurpose compost for most species, orchid bark for epiphytes, and gritty cactus mix for succulents. Terracotta pots with drainage holes give the best results. Avoid feeding for 4-6 weeks after repotting to prevent root burn.
Key takeaways
- Repot houseplants in spring (March to May) when active growth begins and roots recover fastest
- Move up by only 2-5cm in pot diameter — oversized pots hold excess moisture and cause root rot
- Roots circling the inside of the pot, water running straight through, and stunted growth are the clearest signs
- Terracotta pots with drainage holes are the best all-round choice for most houseplants
- Use peat-free multipurpose compost for most plants, but orchids, cacti, and ferns need specialist mixes
- Do not feed for 4-6 weeks after repotting — fresh compost contains enough nutrients and fertiliser burns damaged roots
repotting houseplants potting compost indoor plants plant care
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