Identium
How to Propagate Pothos and Philodendron in Water (Free Plants, No Skill Needed)
One plant becomes six for the price of a jam jar. The only thing you have to get right is where you cut.
This is the cheapest fun in the hobby. A pothos on a shelf can become six plants in a month, and the whole process needs a pair of scissors and a glass of water.
It also has exactly one way to fail, and almost everyone fails that way the first time.
Cut below a node. That is the whole secret.
A node is the slightly swollen bump on the stem where a leaf joins, often with a small brown nub beside it. That nub is an aerial root waiting to happen. All new roots come from nodes.
A cutting with a node will root. A cutting without one will not, no matter how big and healthy the leaf is. It will sit in water looking perfectly fine for two months, then slowly yellow and rot.
So: find a node, and cut about one centimetre below it. Include one to three leaves above it. That is a cutting.
Remove any leaf that would sit under the waterline. Submerged leaves rot and foul the water.
The method, start to finish
- Pick a healthy vine. Long trailing ones with lots of leaf spacing are ideal, and cutting them back makes the parent plant bushier anyway.Choose
- Cut 1cm below a node with clean scissors. Multiple cuttings from one vine is fine, just make sure each piece has a node.Cut
- Strip the lowest leaves so the node sits in water and no foliage does.Strip
- Put it in a clear glass of room temperature water. Clear glass so you can watch the roots, which is most of the pleasure.Submerge
- Bright indirect light. Not direct sun, which cooks the water and grows algae.Place
- Change the water every three to five days. This matters more than anything else you do. Stale water is the second most common failure.Refresh
- Wait. First roots in one to three weeks for pothos and philodendron, a bit longer for monstera.Wait
- Pot up when roots reach 5 to 8cm, or 2 to 3 inches.Plant
No node, no roots. A leaf on a stalk will stay green for months and never produce a single one.
Rule of thumbMoving to soil, and why people lose plants here
Water roots and soil roots are not the same thing. Water roots are thin, white and brittle, adapted to pulling oxygen straight from water. Soil roots are tougher and hairier.
Leave a cutting in water for months and it builds a big system of water roots that struggle badly when they hit soil. That is why a cutting that thrived in a jar can collapse a week after potting, and people conclude they killed it in the transfer.
Two ways to avoid it. Either pot up early, when roots are 5 to 8cm rather than 20, or skip water entirely and root the cutting straight into moist potting mix. Direct-to-soil is less satisfying because you cannot watch anything happen, but the plant transitions better.
When you do pot up, keep the soil a little more moist than usual for the first two weeks while the roots adapt, then go back to normal watering.
What roots easily, and what does not
Very easy in water: pothos, heartleaf philodendron, monstera, tradescantia, spider plant babies, coleus, mint, basil, lucky bamboo, begonia.
Possible but slower: rubber plant, dracaena, ZZ plant (very slow, months), hoya.
Do not use water: succulents and cacti. They rot. Take a cutting, let the cut end dry and callus for a few days, then set it on dry gritty soil.
Different method entirely: snake plant will root from a leaf section in water, but variegated varieties lose their variegation that way and come back plain green. Divide the rhizome instead if you want to keep the pattern.
Troubleshooting
Nothing after four weeks. Check there is a genuine node under the water. This is the answer nine times out of ten. Otherwise it may be too cold, since rooting slows a lot below about 18°C or 65°F, or too dark.
Stem going mushy and brown. Rot, usually from stale water or a submerged leaf. Recut above the damage into clean tissue, fresh water, change it more often.
Cloudy or smelly water. Change it. Every three days from now on.
Leaves yellowing. Normal if it is one older leaf, since the cutting is living on reserves. If several go at once, it is usually rot or water that has not been changed.
Roots but no new leaves. Completely normal. Roots come first, and the plant will not push new growth until it has a root system to support it. Pot it up and be patient.
Two things worth knowing
Rooting hormone is not necessary for pothos or philodendron. They root readily on their own. It helps with woodier, more stubborn cuttings.
And multiple cuttings in one pot is how you get a full, bushy plant rather than a single sad strand. Three to five cuttings in a 10cm pot looks like a plant you would buy. One cutting looks like one cutting for about a year.
If you are propagating something you inherited and cannot name, it is worth checking what it is first, because the method varies enough to waste a month. Photograph a leaf with the stem attached and Identium will tell you the species and how it propagates.
Frequently asked questions
Where exactly do I cut a pothos to propagate it?
About one centimetre below a node, which is the small swollen bump on the stem where a leaf joins, usually with a little brown nub beside it. All roots emerge from nodes. A cutting without a node will never root, however healthy the leaf looks, and this is the single most common reason propagation fails.
How long does pothos take to root in water?
First roots usually appear in one to three weeks, and the cutting is ready to pot when roots reach 5 to 8 centimetres, generally three to six weeks in total. Monstera takes a little longer. Rooting slows considerably below about 18°C or 65°F, so winter propagation takes longer.
Why is my cutting not growing new leaves?
Because roots come first. A cutting will not push new foliage until it has enough root system to support it, so a rooted cutting sitting still for several weeks is behaving normally. Pot it up once roots are a few centimetres long and new leaves usually follow within a month.
Should I propagate in water or straight into soil?
Both work. Water lets you watch progress and is more forgiving of beginners, but water roots are structurally different from soil roots and struggle if the cutting sits in water for months. Rooting directly into moist potting mix skips that transition. If you use water, pot up early.
Can I propagate succulents in water?
No, they rot. Take a cutting, leave the cut end to dry and callus in a dry airy spot for a few days, then lay or set it on dry gritty soil and wait. Succulent leaves laid on soil will also grow roots and produce whole new plants.