Some links on this page may be affiliate links — they never change our advice.
Propagation and repotting are the two jobs that move a houseplant collection forward — propagation multiplies what you already grow well, repotting keeps the plants you have from grinding to a halt in a pot they’ve outgrown. Neither is risky if the timing is right and the conditions are right; both go wrong fast if either of those is off. (How we research: How We Research.)
The Leafmend approach
- Read the plant first. Pot-bound signs, growth cues, season — these tell you when. Doing the work at the wrong time is most of the trouble.
- Match the method to the species. Water propagation works well for a recognisable shortlist of plants and not for others; cuttings, division and repotting each have their place.
- Don’t over-pot. A small upsize and fresh mix beats a giant pot full of wet soil that the roots can’t dry out.
- Recover, don’t push. New cuttings and freshly repotted plants want stable light, stable water and no fertiliser for a few weeks.
The guides
- How to Propagate Houseplants in Water — which plants root reliably in water, how to take the cutting, the conditions roots actually need, and when to pot up.
- When and How to Repot a Houseplant — how to tell a plant is pot-bound, the right time of year, handling the root ball, and how to avoid the oversize-pot mistake.
How it connects to the rest of the system
These two jobs sit on top of the basics: a cutting won’t root if the light is wrong, and a fresh repot will rot in a hurry if the watering or soil mix is wrong. If something does start going wrong after a propagation or repot, the Troubleshooting hub is where to read the symptoms, including root rot and overwatering vs underwatering.
Frequently asked questions
Which houseplants can I propagate in water?
Common houseplants commonly propagated by cuttings include African violet, snake plant, Rex begonias, grape ivy, plus pothos and philodendron. Not every species roots well in water — some prefer moist potting medium. Take a stem cutting with at least two nodes.
When is the best time to repot a houseplant?
Spring or early summer, when the plant is in active growth and recovers fastest from the disturbance. You can repot at other times if the plant is in trouble — root rot rescue does not wait for spring — but a healthy upgrade goes most smoothly in the active-growth window.
How do I know when to repot my plant?
Signs of a pot-bound plant include roots encircling the pot perimeter, tight masses of roots filling the pot, leaf tip dieback or browning, water passing through the pot too quickly, and the plant wilting between waterings even when watered on schedule.
What pot size should I move to when repotting?
Move up one pot size — typically about 1-2 inches wider than the current pot. Going much bigger is the classic mistake: a disproportionately large pot holds far more wet soil than the root system can drain, which is a setup for root rot.
Free: 30-Day Houseplant Care Calendar
Daily tasks, weekly routines, and ASPCA pet-safety reference for 9 popular species. Printable PDF, no signup required.
Want to multiply your plants? Get our free Plant Propagation Cheat Sheet — 1-page printable with water vs soil method step-by-step + 9 species table (best method + ease + time to root). Free PDF, no signup. Download →