Pussy Willow Cuttings Root in Plain Water in About 2 Weeks — Turn Vase Branches Into Free Shrubs

Yes: a cut pussy willow branch roots in a jar of plain water, and it does not need rooting hormone to do it. In the one lab trial I found that rooted Salix discolor in plain water (Kefeli, Lininger and Shultz, Slippery Rock University, 2007), cuttings kept at 25°C (77°F) for two weeks formed roots with no hormone at all. That is about two weeks in a warm room, not the “within days” some guides promise. I could not find a measured source for days.

It also means the branches you cut for catkins in February are a free source of new shrubs. The catch is that you pick the new shrub’s sex when you pick the branch, and most guides never say so. Below: why it works, what the timing evidence actually shows, a species table, the steps, and a fix list for when the jar goes wrong.

Why a bare pussy willow branch can grow roots

Willow stems already carry unopened root buds, so cutting a branch only switches them on. The University of Washington Botanic Gardens’ Elisabeth C. Miller Library says willows have “preformed or latent root initials” that grow into a root system once a piece of the parent plant is removed. Penn State’s technical note on live stakes describes the same machinery: clusters of specialised cells called root primordia (“root buds”) that respond to hormonal cues when a stem is cut, flooded or buried.

That is why pussy willow (Salix discolor) appears on Penn State’s list of species suited to live stakes, which are unrooted dormant cuttings pushed into moist soil. The list only includes plants rated “fair to good or better” for rooting in the USDA-NRCS Engineering Field Handbook.

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Don’t confuse this with willow water, the tonic made by steeping willow twigs to help other plants root. That claim has its own evidence problems, which we cover in the willow water rooting hormone guide. Rooting willow itself needs none of it, because the root buds are already inside the stem.

Species matter too. In the Slippery Rock study, silky, weeping and pussy willows lacked deep dormancy and responded to auxin, while purple, autumn and white willows were less active rooters. Pussy willow sits with the eager ones, and the authors report that it can form roots and open buds in both fall and spring.

How long do pussy willow cuttings take to root in water?

Plan on roughly two weeks in a warm room to see roots, and longer if the room is cool or the stem is old. The table shows every timing claim I could trace to a source, and how far each can be trusted.

The takeaway: the only measurement says roots form within two weeks at 77°F, and the soil estimate is four to six weeks. Treat two weeks as the optimistic end for a window sill that is cooler than a lab.

On hormone, the same paper has a twist. Water-only cuttings rooted, so no hormone is needed. But the authors concluded that indole-3-acetic acid (IAA, 150 mg/L) stimulated fall rooting in pussy willow: in the second run it lifted the average root count from 0.70 to 2.37. The first run was messier, with treated cuttings ahead in the first two groups and far behind (0.08 against 2.9) in the third. IAA is a lab auxin, not the IBA in most commercial rooting powders, so don’t read this as a verdict on those products. For a hobby jar, plain water is enough.

Which pussy willow do you have?

“Pussy willow” covers at least two species, and the data differ. Salix discolor is the North American native. Salix caprea, goat willow, is a European species widely sold as pussy willow because its catkins are larger. Every rooting number above is for S. discolor; I found no matching figures for S. caprea.

The table’s biggest lesson is that even universities disagree on how problem-prone goat willow is, so don’t buy either one expecting a trouble-free shrub. If you can’t tell which you have, check the leaf undersides and the winter buds.

How to root a pussy willow branch in water, step by step

1. Cut a young, pencil-thick stem. Northern Woodlands suggests 10 inches to 2 feet long and ¼ to ¾ inch thick, from a young stem because young stems propagate more easily. The Slippery Rock cuttings were 18 cm (about 7 inches). Use clean, sharp pruners and a slanting cut, as Iowa State recommends for forced branches.
2. Stand it in a glass jar with 6 to 8 inches of water, so you can watch the roots. Strip any side twigs that would sit under the surface; in practice, submerged tissue rots first.
3. Change the water often. Iowa State says daily, to limit the bacteria and fungi that block uptake; Grit says every two to three days; Northern Woodlands only says “regularly.” Every two to three days is a workable middle, and daily once the water clouds.
4. Choose warmth or cool, not both. The lab rooted cuttings at 25°C (77°F). Iowa State keeps forcing branches in a dim, cool spot at about 60–65°F while buds develop, which makes catkins last. My reading is that the two goals pull against each other: want the catkins, go cool; want the shrub, go warmer and accept shorter-lived catkins.
5. Mist closed buds. Grit warns that a branch whose buds dry out dies; Iowa State suggests misting two or three times a day.
6. Pot it up once roots show. Gardener’s Path buries the cut end 3 to 4 inches deep in moist mix, in a pot at least 4 inches wide. Roots a couple of inches long is a common rule of thumb, not a tested number.
7. Plant outdoors and keep it damp. Northern Woodlands says to plant out after roots develop and keep new plantings damp through the first season.

You can also skip the jar. Penn State’s live-stake method pushes dormant stems 3/8 to 1 inch thick and 1 to 3 feet long into moist soil, with most of the stem below ground and only one viable node above it. Keep the soil wet for at least six weeks, Gardener’s Path advises.

Cutting from your vase branches

Forced branches can become plants: Grit reports that vase pussy willows “often grow roots as well” as blooming. Iowa State says pussy willow can be forced as early as late February once buds swell, and takes about one to three weeks. Grit’s author says anytime after January works. So the sequence is simple: cut, enjoy the catkins, and if white roots show along the submerged stem, treat it as a cutting.

Pick the right branch: male or female

Pussy willow is dioecious, so male and female flowers grow on separate plants, and the male catkins are larger and showier, according to Purdue Extension. The RHS adds that male catkins start white and silky and turn yellow when ripe, while female catkins are green. Go Botany says the silver velvety catkins come only from male plants.

Cuttings are clones of the branch they came from, so a cutting from a silvery-catkin branch grows into a male shrub with the catkins you wanted, and a cutting from a green-catkin branch does not. This is basic plant biology rather than a tested pussy willow result, but it has a practical consequence: mark your best shrub in late winter when the catkins show, because a bare summer twig can’t tell you its sex.

Planting out and caring for the new shrub

Give it moist but well-drained soil (Purdue, RHS) and full sun (RHS), in a spot that suits a fast, large shrub. Plan on 8 to 15 feet of spread depending on the source (RHS 2.5–4 m; Gardener’s Path up to 15 ft). Gardener’s Path calls the roots aggressive and fast-spreading, so keep the shrub away from foundations, driveways and pipes; our willow trees guide covers the root-spread distances for the bigger species.

Pruning advice conflicts. Purdue says to wait until after flowering and either cut the whole shrub to the ground every 3–5 years or remove a third of the oldest branches annually. The RHS says every two or three years in March for the best catkins. Gardener’s Path says prune while dormant or the cuts will bleed sap. Pruning right after the catkins finish satisfies Purdue and the RHS, and the one-third renewal rule keeps the younger wood doing the work. It is the same logic as the late-winter renewal prune in our red twig dogwood guide, and the two shrubs make a good bare-stem pairing in a winter border.

Pussy willow’s catkins open in the earliest bloom stage of the year, which our 18 flowering trees guide maps from February to September, so use that bloom calendar to plan what follows it. UK gardeners should know the RHS lists S. discolor as native to North America, not Britain, and hardy to H7.

Pussy willow calendar

Sources agree that most of the year works for cuttings. What shifts is how fast they root and how much watering they need afterward.

Troubleshooting pussy willow cuttings and young plants

One more check: an aphid cluster or a few chewed leaves doesn’t need treatment on its own. The RHS lists aphids, caterpillars, willow leaf beetle and sawflies among the usual visitors, and Gardener’s Path suggests a strong hose rinse for aphids.

What to do with your next vase branch

When the catkins open, note which stems carry silver ones. Recut a pencil-thick stem on a slant, stand it in 6 to 8 inches of water somewhere bright and warm, and change the water every two to three days. Expect roots at around two weeks, not days, pot it up in damp mix, and keep it watered through its first season. If nothing has rooted after four weeks, recut from a younger stem and try again.

Frequently asked questions

Can you root a pussy willow branch in water?

Yes. In a two-week lab trial at 77°F, Salix discolor cuttings in plain water formed roots. Willows carry preformed root buds in their stems, which is why this works without special treatment.

How long does it take pussy willow to root in water?

About two weeks in a warm room is the tested figure; cooler rooms and older stems take longer. Cuttings in potting mix are reported to take four to six weeks.

Do you need rooting hormone or willow water?

No. Water-only cuttings rooted in the lab. A lab auxin (IAA) boosted rooting in some groups, but nothing here shows a hobby gardener needs a powder or a tonic.

Can I root pussy willow stems from a florist bouquet?

Possibly, but I found no source that tests florist stems. Recut the base on a slant, put it in clean water, and discard any stem that is dry, shrivelled or slimy.

Will a rooted cutting have silver catkins?

Only if it came from a male plant. Cuttings are clones, so take them from a branch that showed silver catkins in late winter.

When should I prune a pussy willow?

Right after the catkins finish. Purdue says to wait until after flowering, and the RHS recommends March, so the two largely agree.

Sources

1. Kefeli V, Lininger C, Shultz R. Physiological taxonomy of willow species: dormancy, rooting of cuttings, reaction on auxins. Advances in Molecular Biology 1(2), 2007
2. Elisabeth C. Miller Library, University of Washington Botanic Gardens. Willow tree propagation
3. Penn State Extension. Establishing Native Riparian Shrubs Using Live Stakes, Wildland Weed Management Technical Note #3
4. Iowa State University Extension and Outreach. How to Force Branches of Spring-Flowering Trees and Shrubs. Yard and Garden
5. Purdue Extension. Pussy willow shrubs can thrive in well-drained soil. Indiana Yard and Garden
6. Royal Horticultural Society. Salix discolor plant profile
7. Cornell University. Salix caprea, Woody Plants Database
8. University of Illinois Extension. Salix caprea (Goat willow), Woody Plants Database
9. Native Plant Trust. Salix discolor, Go Botany
10. Northern Woodlands. Grow pussy willows. Knots and Bolts
11. Grit. Bring branches in and force spring
12. Gardener’s Path. Salix caprea, S. cinerea, S. discolor