← the journal/guide · 11 jun 2026
repotting without casualties: when, how, and when not to
all of them — the rootbound ones
repot when roots circle the bottom or grow out of the drainage hole, ideally in spring, into a pot only 2–5cm wider than the old one. don't repot a plant that just came home from the store, and don't drench most plants immediately after — give the roots a few days to settle first.
- 1. symptom
roots out the drainage hole, water racing straight through, growth stalled
those are the three honest signals. a plant that dries out within days, lifts slightly out of its pot, or shows a solid wall of circling roots when you peek underneath is asking. a plant that merely 'has been in that pot a while' is not.
- 2. cause
why repotting kills (spoiler: it's rarely the repotting)
three classic mistakes. timing: repotting a stressed plant — fresh from the store, mid-winter, or already sick — stacks stress on stress. size: jumping to a much bigger pot surrounds the roots with soil they can't drink, which stays wet and rots them. aftercare: flooding disturbed roots immediately, before the micro-tears have healed.
- 3. the fix
the calm method, eight minutes per plant
spring morning, plant slightly dry. squeeze or tap the pot, slide the plant out, loosen the outer root layer gently with your fingers. new pot: 2–5cm wider, drainage hole non-negotiable, fresh mix matched to the plant. set it at the same depth it grew before, backfill, press lightly. water modestly — enough to settle the soil — then leave it alone somewhere familiar for a week. no feeding for a month; fresh mix carries enough.
the store-plant exception
a new plant just survived a greenhouse, a truck, and a shop shelf. repotting it the day it comes home is one move too many — most can wait a month in the nursery pot. the exception to the exception: if water pools on top or the soil smells swampy, repot now, because the roots are already in trouble.
when not to repot at all
winter (the plant has no energy budget for root repair), during flowering (it will drop everything in protest), and when the plant is sick from overwatering — that one needs dry-out and root triage, not a bigger pot. and some plants, orchids and snake plants among them, genuinely flower better slightly rootbound. crowded is not always a crisis.
people keep asking…
- how do i know if my plant needs repotting?
- look for roots growing out of the drainage hole, water running straight through without soaking in, or the rootball lifting out of the pot. seeing one of those, repot. seeing none, leave it be — repotting on a calendar is like surgery on a schedule.
- what size pot should i repot into?
- 2–5cm wider in diameter than the current pot, no more. oversized pots hold water the roots can't reach, and permanently wet soil is the fastest route to root rot.
- should i water right after repotting?
- lightly, just to settle the soil — then stop until the top few centimeters dry out. the exception is succulents and cacti: repot them dry and wait about a week before the first watering.
- when is the best time of year to repot houseplants?
- early spring, just as new growth starts — the plant has the energy to rebuild roots fast. avoid midwinter unless it's an emergency (root rot, swampy soil), in which case act immediately regardless of season.
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