PREFERRED METHOD
stem cutting
Also possible: layering.
How to propagate wax plant
Hoya carnosa
Propagate wax plant by stem cutting. Roots in 21 to 49 days in water. The cutting must include a node.
TIME TO ROOT
21–49 days
Roughly 3 to 7 weeks — middling for a houseplant. 11 of the 40 species
in this database root more slowly.
NODE REQUIRED
Yes
A cutting without a node has no tissue that can become root and will rot instead.
MEDIUM
water or soil
Water roots are more brittle than soil roots and sulk for a week or two after potting up. Both work; soil skips the transition.
BEST SEASON
Spring and summer
Cuttings taken in active growth root faster and rot less than winter ones.
GROWTH HABIT
trailing
Habit is what decides which methods are available at all.
Why stem cutting works here
Roots form at the node — the slightly swollen point where a leaf meets the stem. That tissue can still turn into root tissue; the smooth stem between nodes cannot.
Doing it
Cut a few millimetres below a node with at least one leaf above it. Strip anything that would sit underwater. Put the node in the medium, the leaf in the light.
Where it goes wrong
A cutting with no node will sit green for weeks and then rot. It is the commonest way to waste a month.
The other routes
Slower or lower-yield for this species, but each has a case.
layering
A trailing stem left in contact with soil roots at the nodes on its own. You are just encouraging what it already does. Nothing much. It is the lowest-risk method there is, and the slowest.
DISPLAY — in-content responsive
Before you cut
- Sap is not a concern here. Wax plant is listed non-toxic to cats and dogs, so offcuts and rooting jars are lower risk than with most houseplants.
- Take more than you need. Losses are normal. Three cuttings in one jar costs nothing extra and changes the odds.
- Use a clean blade. Scissors crush the stem and crushed tissue rots. A craft knife wiped with alcohol is enough.
- Do not fertilise a cutting. There are no roots to take it up, and the salts sit in the medium and burn what does form.
Also for this species
Full care entry — light, watering interval, soil recipe and difficulty, with sources. Toxicity to cats and to dogs.
Sources
- Missouri Botanical Garden Plant Finder — Hoya carnosa Cultivation and propagation notes. Checked 2026-09-11.
- Royal Botanic Gardens Kew, Plants of the World Online — Hoya carnosa Accepted name and family. Checked 2026-09-11.
- ASPCA Animal Poison Control — Hoya carnosa 'krinkle kurl' Toxicity of sap and offcuts. Checked 2026-09-11.
- Wikidata entity Q134347
Compiled and edited by Tony Valcarcel · 2026-09-12
Rooting times are typical ranges for indoor conditions, not guarantees. Warmth and
light move them more than anything you do to the cutting. How this is sourced.