Can you root clematis cuttings in water? You can try clematis cuttings in water, but expert sources root clematis in gritty compost, sand or perlite instead. Water rooting is untested. Clematis societies report roots in about 4 weeks in mix, and a Minnesota study averaged 36 to 48 days; sand or perlite is safer.
Key takeaway: Clematis is usually grown from softwood internodal cuttings, and the guidance from the British Clematis Society, the International Clematis Society and a Minnesota growers’ study all uses a free-draining rooting mix. This guide explains what is known, where clematis cuttings in water fit, and how to move rooted cuttings on.
| Factor | Clematis Cuttings in Water vs Mix | Source |
|---|---|---|
| Best timing | April to June softwood | British Clematis Society |
| Cutting type | One node, about 2 in (5 cm) of stem below | Intl. Clematis Society |
| Rooting time in mix | About 4 weeks; 14 days with bottom heat | BCS; ICS |
| Study range | 36 to 48 days | Minnesota study |
| Fastest medium tested | Washed sand | Minnesota study |
| Rooting hormone | IBA had no significant effect | Minnesota study |
| Pot up | Roots 2.4 in (6 cm) or a strong new shoot | Intl. Clematis Society |
Can You Root Clematis Cuttings in Water?
Clematis cuttings in water may root, but no clematis society or study we found recommends it. The British Clematis Society uses small pots of cutting compost topped with grit or coarse sand. The International Clematis Society (ICS) uses a seed tray topped with sharp sand. Treat clematis cuttings in water as an experiment (our guidance).
Water does play one documented role. The ICS says the cut at the base of the internode must be immersed in water immediately after cutting, because a cutting that dries out may look fine but fail. So clematis cuttings in water for a short soak is standard practice; rooting in a jar is the untested part.
- Most reliable: washed sand or perlite, which gave strong rooting in the Minnesota study.
- Middle ground: a jar of water topped up daily, then early transfer to sand (our guidance).
- Main risk: rot and gray mold (botrytis), which the ICS says can spread like wildfire.
If you want a jar setup, see water propagation vs soil propagation for the trade-offs.
How Long Do Clematis Cuttings Take to Root?
In a good rooting mix, clematis cuttings usually root in about four weeks, the British Clematis Society says. With bottom heat of about 73°F (23°C), the ICS reports roots within 14 days; without heat, it can take 40 days or more. Clematis cuttings in water have no published timeline, so expect them to be slower than heated mix (our guidance).
- Bottom heat 68°F (20°C): helps rooting but is not essential (BCS).
- Bottom heat 73°F (23°C): roots in about 14 days (ICS).
- No heat: 40+ days (ICS).
- Minnesota trial: ‘Gypsy Queen’ rooted in 38 days; ‘Jackmanii’ took 48.
To check, the BCS suggests a gentle tug on a leaf: if the cutting moves, it has not rooted. For general timing, see how long water propagation takes.
When Should You Move Rooted Clematis Into Soil or a Hydro Setup?
Pot up when roots are about 2.4 inches (6 cm) long or when a shoot is growing strongly from the node, says the ICS, noting some cultivars make weak shoots long before rooting. Water roots are fragile, so move clematis cuttings in water as soon as roots reach about 1 inch (2.5 cm) (our guidance).
- Late season: BCS says if cuttings are not ready by late August, delay potting up until spring.
- Weaning: ICS lowers heat by about 4°F (2°C) every 2 days over a week or ten days.
- First year: grow on in pots before planting out (BCS).
- Hydro option: perlite or rockwool cubes suit a short move to hydro (our guidance).
For a gentle step from water to medium, see perlite propagation.
How Do You Take Clematis Cuttings Step by Step?
Take softwood cuttings from April to June from the middle of strong vines, the BCS advises. Clean tools matter, because ragged cuts invite fungal disease, the ICS warns.
- Cut just above a leaf joint and again about 1.2 to 1.6 in (3 to 4 cm) below it (BCS).
- Drop the base into water at once so it does not dry out (ICS).
- Trim large leaves to cut water loss.
- Dip the base in rooting powder if you wish; the Minnesota study found IBA unnecessary.
- Insert into gritty mix, or stand in clean water if you test clematis cuttings in water.
- Keep bright but out of direct sun, with high humidity.
What Rooting Medium Works Best for Clematis?
The 1992 Minnesota Commercial Flower Growers study tested five media. Washed sand gave the earliest rooting at 36 days, and peat-perlite was slowest at 46 days. Sand or pure perlite gave the most roots. The authors linked faster rooting to a higher medium pH, closer to 7.
- Washed sand: fastest, about 36 days.
- 100% perlite: high root number and root weight.
- Peat and perlite: slowest, about 46 days.
- Node position: lower nodes rooted better than the two tip-most nodes.
How Do You Keep Clematis Cuttings From Rotting?
Rot is the main failure for clematis cuttings in water or mix. The ICS warns that soggy compost encourages rot and that too little light, or losing the leaf, stops rooting. It removes affected leaves every couple of days.
- Change jar water every 2 to 3 days (our guidance).
- Keep the leaf: a cutting that loses its leaf rarely roots (ICS).
- Airflow: avoid sealing cuttings tightly; see humidity domes for cuttings.
FAQ About Clematis Cuttings in Water
Do clematis cuttings in water root reliably?
No source confirms it; mix is proven.
How long are clematis cuttings in water before roots?
There is no published figure; mix takes about 4 weeks.
When should I take clematis cuttings?
April to June, from the mid-section of strong vines.
Does clematis need rooting hormone?
The Minnesota study found IBA had no significant effect.
Should I put clematis cuttings in water right after cutting?
Yes, briefly, so the base does not dry out (ICS).
What size should a clematis cutting be?
One node with about 2 in (5 cm) of stem below.
Sources
- British Clematis Society — Growing From Cuttings
- International Clematis Society — The Propagation of Clematis From Cuttings
- Minnesota Commercial Flower Growers Association Bulletin — Factors Affecting Clematis Rooting (1992)
- Photo credits (Wikimedia Commons, edited with titles): Rooted cuttings – Flickr – peganum (1) by peganum from Small Dole, England (CC BY-SA 2.0); Clematis vine bloom by B137 (CC BY-SA 4.0)