Rooting a cutting, step by step
One afternoon of decisions, then six weeks of watching it look worse. The week-by-week sequence, with the alarming-but-normal parts flagged.
30-second version first, the whole guide below6 min read
The short version
- One cut to order needs one to two weeks to dry first, longer when the air is very humid.
- Dry mix, one to two inches deep, staked if it needs it.
- Roots come from warmth plus a trace of moisture — not from watering.
- Until roots show, around two months in, give it nothing or only a splash that darkens the top inch.
- Once roots show, give the first full soak, and after that let the mix dry out before the next one.
Your setup
Pick yours to see what changes in this guide.
Where it grows
In the ground
In the ground the same shallow rule applies, and heavy clay reportedly has to be opened up first: pumice mixed in, up to about a quarter by volume, is the usual way.
In a pot
Pot into dry or barely damp mix, never wet.
A six-inch pot suits one cutting.
Where it lives
Outdoors
Outdoors in a cool spring or fall the same cutting is reportedly slower, and with nights under about 60°F (16°C) it may not root until the weather warms.
Harsh midday sun burns an unrooted cutting easily, since nothing supplies the tip.
Indoors
Nothing in this guide changes indoors.
The season
Winter
Store the cutting cool, dark and frost-free; plant in spring.
Not winter
Nothing in this guide changes outside winter.
Lines are from this guide, or from the cultivar library where one says so. For where they come from, see the end of the guide.
Introduction
Growers say the hardest part is doing nothing for six weeks while the cutting looks worse. Everything else is one afternoon of decisions.
What you are working with
A cutting listed as callused arrives ready to pot. One needs one to two weeks to dry first, longer when the air is very humid.
Green skin below the soil line is not bark yet and rots easily. Growers say every depth, water and feed rule comes down to one thing: keep it dry, shallow and unfed until it corks over.
Roots come from warmth plus a trace of moisture — not from watering. Held-back water makes roots search and spread. A soaked pot gives them no reason to. Outdoors in a cool spring or fall the same cutting is reportedly slower, and with nights under about 60°F (16°C) it may not root until the weather warms.
Set it up once
Step 1: Mix
Growers say a fast-draining, light mix works best: about two parts gritty mineral to one . Pot into dry or barely damp mix, never wet.
Step 2: Pot
Drainage holes and no attached saucer. A six-inch pot suits one .
Step 3: Depth
One to two inches, enough to stand it up. Deeper is not safer; it is the commonest way to lose one. In the ground the same shallow rule applies, and heavy clay reportedly has to be opened up first: mixed in, up to about a quarter by volume, is the usual way.
Right
1–2 inches buried
Too deep
half the piece buried
An inch or two under the surface, and no more. Every extra inch of buried green skin is another inch that can rot while the plant has no roots to defend it.Both drawings are the same length of cutting. Step 4: Support
If it topples, tie it to a stake. Never bury more of the plant to fix balance.
A tall cutting is held up, not held down. A cane and a loose tie keep it steady while it roots; burying it deeper to stop it toppling is how you rot the base.The tie is a loose figure of eight so the cane never cuts into the skin. Step 5: Light and air
Bright but indirect. Harsh midday sun burns an unrooted cutting easily, since nothing supplies the tip. Airflow, not a still corner.
Step 6: No feed of any kind
No fertilizer, no worm castings, nothing. One grower reports potting two dozen adult cuttings in a castings-heavy mix and losing about three quarters to from the base.
The water schedule: two that work, one that fails
Growers say three rules make good defaults: nothing at planting, only a trace before roots appear, no full soak until roots show. Both schedules below work. Mixing them is what kills cuttings.
The small-sip schedule
Nothing on planting day. Growers say to give a splash about a week later: darken the top inch, no deeper. Another sip a week after. Full soak once roots show. The trace of damp below draws roots down.
The no-water schedule
Nothing at all until roots appear. A rootless cutting cannot drink, so water just sits against buried green skin, growers say. Whole collections have rooted this way without losing a piece.
The small-sip schedule
Nothing on planting day. Growers say to give a splash about a week later: darken the top inch, no deeper. Another sip a week after. Full soak once roots show. The trace of damp below draws roots down.
The no-water schedule
Nothing at all until roots appear. A rootless cutting cannot drink, so water just sits against buried green skin, growers say. Whole collections have rooted this way without losing a piece.
Pick one and follow it. Never the sip from one plus the soak from the other. A beginner reports spending about eight months switching through , occasional water, pure and full sun, with no roots. The switching itself was what failed.
Once roots show, give the first full soak, and after that let the mix dry out before the next one.
Three ways to do it
None is the correct one. They trade speed against risk, and your climate mostly picks.
Figure
The same cutting, three ways down
Cutaways, because the decision happens below the soil line: each style buries a different amount of green skin, and buried green skin is the risk you are managing.
Straight into the pot
Buried an inch or two — never deeper. The slow, safe default.
Resting on the soil
Stood on the surface, nothing buried — so no green skin sits wet. The water schedule is the same.
Log style
Half-buried on its side: roots below, pups up the whole length.
Step 1: Straight into the pot
Plant the piece where it will live. Until roots show, around two months in, give it nothing or only a splash that darkens the top inch. Simplest, and right for most people.
Step 2: Resting on the soil
Growers say to stand the end on the surface, unburied, and pot up once rooted. Nothing green is buried, so no green sits wet. Give it the same sparing water as the first method, growers say. Roots in about two months. That is reportedly the fastest route to a drinking plant, and the best defense against a thin tip.
Step 3: Log style
Lay it down half-buried. It reportedly roots along its whole underside and up its length — how wind-broken pieces spread in the wild. Growers call it slow and extremely stable, and it hides an ugly scar: damaged face against the soil.
In a wet climate growers describe a fourth trick: soil in the bottom of the pot, rough volcanic rock packed around the cutting above it. No green skin touches wet. The rock reportedly dries fast after rain, and air moves at the base. One grower reports losing nothing this way through an exceptionally wet season.
Six months, one cutting
Interactive
Week by week, planting day to the first winter
Pick a point on the track, then change the method or the season and watch the advice move with it. The dates are typical, not promised: warmth brings all of them forward and cold pushes all of them back.
Method
Straight into its permanent pot, an inch or two deep, watered very sparingly. The usual way, and the one with the most rules.
Season
Stop 1 of 8
Planting day
What you do
Normal
Not normal
Planting day. No water. Into dry or barely damp mix, one to two inches deep — just enough to stand it up. Stake it if it is tall rather than burying it deeper.
Step 1: Day 0: planted
Dry mix, one to two inches deep, staked if it needs it. No water.
Right
1–2 inches buried
Too deep
half the piece buried
An inch or two under the surface, and no more. Every extra inch of buried green skin is another inch that can rot while the plant has no roots to defend it.Both drawings are the same length of cutting. Step 2: Week 1: the first splash
On the sip schedule, growers say, this is the only water for another week, far less than most people pour. Wet the top inch and stop.
A splash
top inch damp
A soak
wet to the bottom
The first watering after planting is a splash, not a soak — enough to darken the top inch and no more. There are no roots yet to drink anything deeper.Right for a rooted plant in summer. Wrong for a cutting with no roots. Step 3: Week 3: the ribs begin to close
Living on stored water. Nothing is wrong.
Week zero
ribs full · firm
Week six
ribs drawn in · same height
A rooting cutting drinks itself. Over six weeks the rib valleys pull in and the whole piece narrows — and it barely loses any height at all. That is the shape of a plant working, not a plant dying.Height is unchanged between the two drawings. Only the width moved. Step 4: Week 6: at its worst
Thinner than the day it arrived, nothing to show. Roots usually come just after this point.
This is the point people give up at, and roots usually appear just after it. A cutting can look thin and still be sound; soft flesh is the sign of rot, and this drawing is firm all the way down.The base is the one place worth checking with a finger. Step 5: Around two months: roots
A gentle wiggle near the top meets resistance. First proper soak now.
The first roots are short, white and brittle, and they come out of the rim of the callus rather than the middle of it. Lift a cutting once to see them and you break most of them off. Step 6: Month 3: plumped back up
Ribs fill out again. Vertical growth may still be nowhere. The action is below the soil.
The worst of it
week six
Month three
ribs full again
Roots arrive and the plant refills itself from the bottom up. Same cutting, same angle, three months apart. Step 7: Month 6: a pup
A new head from an . Growers say to keep it unfed until the buried skin has turned to bark, around a year in; then feed it like any potted cactus.
A first pup means the cutting has roots: it only spends energy on a new head once roots are feeding it.
What is normal, and what is not
Figure
The same pot, three times
You are told not to lift it out and check, which is easier to accept once you have seen what is going on down there. Three moments in the same pot.
Day 0
an inch or two in, dry
A hard healed face standing in dry grit. Nothing to drink, and nothing for anything to rot into.
Weeks 3 to 6
the shrivel
Thinner, ribs squeezed, looking worse every week. Roots are already starting off the callus — this is the week people pull it up and undo it.
Around week 8
roots, then girth
A fan of fine roots into the mix, and the column filling back out. A pup is usually still a couple of months off.
Fine, leave it alone
Black dots and orange marks on the callus. Roots about to push out reportedly show as firm bumps at the base, and they can be left alone.
Not fine, act today
Fuzzy gray mold, dark soft patches at the base, or brown flesh that gives when pressed, growers say. Cut back to clean white tissue with a sterilized blade; let the new face callus again.
Fine, leave it alone
Black dots and orange marks on the callus. Roots about to push out reportedly show as firm bumps at the base, and they can be left alone.
Not fine, act today
Fuzzy gray mold, dark soft patches at the base, or brown flesh that gives when pressed, growers say. Cut back to clean white tissue with a sterilized blade; let the new face callus again.
Never pull it up to check. That breaks the new roots and restarts the clock, and growers agree on it. The only safe test: a very gentle side-to-side wiggle near the top. Better still, hands off — fattening ribs reportedly mean water is going up.
Growers say new growth much thinner than the stem means two things. On a rooted plant, too little light. On an unrooted cutting, water and food are reportedly not reaching the tip; light is not the cause, and even large cuttings in full sun go briefly thin before they resume. The thin section stays thin for good, growers say, but on a decent-sized piece it is usually mild.
Common mistakes, try it, quick check and sources
Quick check
Question 1: When does a newly planted cutting get its first water?
Question 2: Six weeks in, your cutting is thinner than the day it arrived and has not grown. What is happening?
Question 3: What is the only safe way to check whether it has rooted?
