How to Propagate Ivy in Water: A Step-by-Step Guide

English ivy roots easily in plain water, and the process requires little more than a healthy cutting, a clean jar, and a bright windowsill. The key to success is choosing the right type of stem: younger, flexible growth roots far more reliably than older, woody stems, a difference rooted in measurable biological changes inside the plant. Below is everything you need to get from a parent plant to a thriving new one, along with the science behind why each step matters and the safety precautions most guides leave out.

Choosing the Right Cutting

This is the single most important decision in the whole process, and it comes down to one thing: growth phase. English ivy has two distinct life stages. Juvenile stems are the ones most people picture when they think of ivy: flexible runners with the classic lobed leaves, often producing small aerial rootlets along the stem. Mature stems, by contrast, are woodier and stiffer, with unlobed, more oval leaves. They eventually produce flowers and berries. These two types of growth look different, and they behave very differently when you try to root them.

Juvenile ivy cuttings form roots through a direct pathway, meaning the cells that will become roots are already partially primed and respond quickly once the stem is cut. Mature-phase cuttings take an indirect route, requiring more cellular reorganization before roots can emerge, which makes them significantly harder to root.¹ One study growing ivy cuttings in solution culture found that only about 73% of mature cuttings rooted after six months when grown alone, and that rate dropped to 50% when grown alongside juvenile cuttings.² Juvenile cuttings, on the other hand, root at much higher rates and in a fraction of the time.

A major reason for this gap is lignin. As ivy stems age and transition to the mature phase, they accumulate more lignin, the compound that makes wood hard. Research has found a clear negative relationship between lignin buildup and rooting ability: the more lignified a stem, the fewer adventitious roots it produces.³ In practical terms, this means you want green, pliable stems with lobed leaves. If the stem is brown, bark-covered, or stiff enough that it snaps rather than bends, skip it.

How to Take and Prepare the Cutting

Once you have identified a healthy juvenile vine, here is the step-by-step process:

• Select a stem: Look for a vine that is at least six inches long with several sets of leaves. The stem should be green and flexible, with no signs of disease or pest damage. Aerial rootlets along the nodes are a bonus, as they indicate rooting potential.
• Make the cut: Use clean, sharp scissors or pruning shears. Cut the stem about half an inch below a node, which is the slightly swollen bump where a leaf meets the stem. Roots will emerge from or near this node. A cutting four to six inches long with three to five nodes is ideal.
• Strip the lower leaves: Remove the leaves from the bottom one or two nodes. These stripped nodes will be submerged in water, and leaves left underwater will rot, fouling the water and encouraging bacterial growth. Leave at least two or three healthy leaves at the top of the cutting so it can continue photosynthesizing.
• Optional clean rinse: Give the cut end a quick rinse under tap water to remove any sap or debris from the wound site.

You do not need rooting hormone for ivy in water. Rooting hormone products contain synthetic auxins, and ivy, especially juvenile ivy, already produces enough of its own auxin to trigger root development. When a stem is severed, the plant’s natural auxin begins pooling at the cut end within hours. Research on stem cuttings has shown that the plant hormone IAA (the main natural auxin) accumulates in the bottom half-centimeter of the cut stem within about five hours of excision, creating the local hormone concentration that kick-starts root formation.⁴ Ivy is one of those plants that cooperates with this process enthusiastically, at least in the juvenile phase. Rooting hormone can speed things up slightly or improve success rates on borderline cuttings, but it is not necessary for most people propagating a standard houseplant ivy.

Setting Up the Water Station

The container matters more than you might think, not because ivy is fussy, but because conditions that seem fine at first can quietly sabotage root growth over weeks.

Use a glass jar or vase rather than an opaque container. Being able to see the water level and root progress means you will notice problems early. A narrow-necked jar is helpful because it keeps the cutting upright without needing supports, while still allowing air circulation at the water’s surface. Make sure the stripped nodes are submerged but the remaining leaves are above the waterline.

Fill the jar with room-temperature water. Tap water is fine in most areas, though if your tap water is heavily chlorinated, letting it sit out for 24 hours before use will allow the chlorine to dissipate. The water level should cover the bare nodes by at least an inch.

Place the jar in bright, indirect light. Direct afternoon sun can overheat the water in a small jar and encourage algae growth, but too little light will slow the cutting’s ability to photosynthesize and sustain itself while roots develop. A north-facing or east-facing window tends to work well. Avoid placing the jar near heating vents or cold drafts, as stable temperatures in the range of roughly 65 to 80 degrees Fahrenheit encourage the fastest root growth.

Maintaining the Water and Monitoring Progress

Change the water every five to seven days, or sooner if it looks cloudy or develops a film. Stagnant water runs low on dissolved oxygen, which roots need, and becomes a breeding ground for bacteria that can cause stem rot. Each time you change the water, rinse the jar and the submerged portion of the stem. If you notice any slimy coating on the stem below the waterline, gently wipe it off with your fingers.

You should see small white or pale-green bumps at the nodes within one to three weeks. These are root initials, the beginning of adventitious roots. Over the following weeks, they will elongate into fine, branching roots. Do not be alarmed if the very first roots look thin and translucent: water roots are naturally more fragile than soil roots and will thicken after transplanting.

A common question is how long to leave the cutting in water before transplanting. The answer depends on how robust the root system looks. A good rule of thumb is to wait until roots are at least one to two inches long and you can see multiple branching root tips. For most juvenile ivy cuttings in decent light, this takes three to six weeks. Waiting too long is not ideal either: cuttings left in water for months develop root systems adapted entirely to an aquatic environment, and they can struggle more during the transition to soil.

Troubleshooting Common Problems

If your cutting has been sitting in water for several weeks with no sign of root bumps, the most likely culprits are the cutting itself or the light level. A mature-phase cutting will simply resist rooting no matter how long you wait. Check the leaves: if they are unlobed and oval rather than the classic three- or five-lobed ivy shape, you may have taken a mature stem. Low light is the other usual suspect, as the cutting needs energy from photosynthesis to fuel root production.

Stem rot, where the submerged portion turns brown and mushy, usually means the water was not changed often enough or too many leaves were left below the waterline. If rot has only affected the very bottom of the stem, you can sometimes rescue the cutting by trimming off the rotted section with a clean blade, making a fresh cut just below the next healthy node, and starting over in clean water.

Algae in the water is unsightly but usually not harmful to the cutting in small amounts. It becomes a problem when it coats the stem and root surface, potentially blocking oxygen uptake. If algae is persistent, try moving the jar to a spot with slightly less light, or switch to an opaque container and check roots by lifting the cutting out periodically.

Transplanting Water-Rooted Cuttings Into Soil

The transition from water to soil is the step where people lose cuttings most often, and it comes down to a mismatch in root structure. Roots that develop in water are adapted to absorb nutrients and oxygen from a liquid medium. They are thinner and more delicate than roots that grow through soil particles. Plunging a water-rooted cutting into dense, dry potting mix and treating it like an established plant will often kill it within days as the fragile roots desiccate or break.

To ease the transition, use a light, well-draining potting mix. A standard indoor potting mix with some added perlite works well. Moisten the mix thoroughly before planting so the roots slip into a wet, accommodating medium rather than dry, rough soil. Make a hole with your finger or a pencil, gently lower the rooted cutting in, and press the soil lightly around the base. Water it in well.

For the first week or two after transplanting, keep the soil consistently moist but not waterlogged. You can also cover the pot loosely with a clear plastic bag to create a mini humidity dome, which reduces water loss through the leaves while the roots acclimate. Remove the bag for a few hours each day to prevent mold. After two weeks, gradually reduce watering to normal ivy care levels and remove the humidity cover entirely. New leaf growth is the best sign that the roots have successfully transitioned.

Other Ivy Species and Varieties

English ivy (Hedera helix) is the species most commonly propagated in water, but the same basic technique works for other Hedera species and their cultivars. Algerian ivy (Hedera canariensis) has larger leaves and roots readily in water using the same approach. Irish ivy (Hedera hibernica, sometimes sold as a subspecies of H. helix) behaves similarly. Among the ornamental cultivars of English ivy, there are hundreds of named varieties with different leaf shapes, sizes, and variegation patterns. Variegated cultivars, those with white or yellow patches on the leaves, tend to grow more slowly than all-green types because they have less chlorophyll available for photosynthesis. This slower growth rate can translate to somewhat slower rooting in water, so give variegated cuttings a bit more time and make sure they get plenty of bright, indirect light.

One thing to be aware of is that some ornamental ivies sold as houseplants are not Hedera at all. Swedish ivy (Plectranthus verticillatus) and grape ivy (Cissera rhombifolia) are common names that contain “ivy” but refer to entirely different plant genera. They can still be propagated in water, but their care requirements and rooting timelines differ.

Protecting Your Skin While Handling Ivy

This is the part most propagation guides skip, and it matters. English ivy contains a compound called falcarinol, which is present in the stems, leaves, and aerial rootlets year-round.⁵ Falcarinol is both an irritant and a sensitizer, meaning it can cause a skin reaction on first contact in some people and can also prime your immune system to react more strongly on future exposures.⁶

In controlled testing, half of the subjects exposed to falcarinol from ivy developed sensitization, and some of those who became sensitized had strong bullous (blistering) reactions even at very low concentrations.⁷ The rash looks similar to poison ivy dermatitis: redness, itching, and sometimes blisters appearing hours to a day or two after contact. People who handle ivy regularly, such as gardeners and plant shop workers, are at higher risk because repeated exposure increases the chance of sensitization.

The practical takeaway is simple: wear gloves when you are cutting, stripping leaves, and handling ivy stems, especially if you are processing multiple cuttings. If you do get sap on your skin, wash the area promptly with soap and water. This is not a reason to avoid propagating ivy, but it is a reason to treat it with the same respect you would give any plant known to cause contact dermatitis. Algerian ivy contains the same allergen, so the same precautions apply if you are propagating that species.

Can You Keep Ivy Growing in Water Permanently?

Technically, yes. English ivy can survive in water indefinitely as long as you supply the nutrients that would normally come from soil. Plain water alone will sustain a cutting for a while because the plant can draw on stored energy and whatever trace minerals are dissolved in the tap water, but over months this supply runs out. The cutting will survive but grow slowly, with smaller, paler leaves.

If you want to maintain ivy in water as a permanent display, adding a dilute liquid fertilizer to the water every few weeks helps. Use roughly a quarter of the strength recommended on the label for potted plants. Change the water regularly as you would during rooting, and keep the jar clean to prevent bacterial buildup. Some people successfully grow ivy in water on a windowsill for years this way, though the plants tend to remain smaller and less vigorous than their soil-grown counterparts.

One genuine advantage of keeping ivy in water is pest management. Many of the most common ivy pests, particularly spider mites, thrive in the dry conditions that potted indoor ivy often lives in. A water-grown ivy plant does not eliminate pest risk entirely, but it does sidestep the dry-soil microenvironment that mites prefer. If you have struggled with mites on soil-grown ivy, a water setup can be worth trying as an alternative.

Outdoor Considerations and Invasiveness

If you are propagating ivy to plant outdoors, it is worth knowing that English ivy is classified as invasive in many parts of North America, the Pacific Northwest, and parts of Australia and New Zealand. The same vigor that makes it easy to propagate in a jar on your kitchen counter makes it a serious ecological problem when it escapes into forests and natural areas. Ivy climbs trees, blocks their light, adds weight that makes them more susceptible to storm damage, and carpets the forest floor so densely that native ground-cover species cannot compete.

Many regions have restrictions on planting English ivy outdoors, and some municipalities have active removal programs. Before you put a water-rooted cutting into your garden bed, check whether your local area has guidance on English ivy. If you live in a region where it is listed as invasive, growing it as an indoor-only houseplant or in a contained patio planter is a responsible alternative. The propagation technique is the same regardless of where the plant ends up, but the destination matters for your local ecosystem.