Although hydrangeas are often mistaken for perpetual flowers, they are actually woody-stemmed shrubs that have a different root system than non-woody, soft-stemmed plants. Because of this, trying to root hydrangeas in water, as you might with certain houseplants, rarely works. For best results, plant hydrangea cuttings at the right time in potting soil.
Like growing roses, there are different ways to grow hydrangeas. When the year’s new stems have grown solid and robust, in late fall or early winter, “hardwood” cuttings obtained from hydrangeas can be rooted. However, it takes a long time for hardwood cuttings to root. 1 The majority of hydrangea producers in the industry employ “softwood” cuttings because they root more quickly and produce superior results.
Can hydrangea cuttings be rooted in water?
Rooting hydrangeas is not too difficult. While some people have succeeded in rooting them in water, many others (like myself) have never been able to do so.
The image to the right, which Susan Park Cole forwarded to us, shows how hydrangeas can be rooted in water. On sometimes, roots appear when an arrangement is left in water for a prolonged period of time. But in my experience, this approach more frequently fails than succeeds.
How can a hydrangea branch be rooted?
- Take a 5- to 6-inch-long clipping off a limb of the hydrangea shrub. According to the majority of experts, the cutting will thrive if it is taken from a branch that did not bloom this year.
- The bottom two leaf nodes’ lower leaves should be removed. A leaf emerges from the branch at the leaf node. At that time, the majority of roots will form.
- Reduce the largest leaves’ size by around 50%.
- Insert cuttings into damp vermiculite or sterile medium after dipping them in rooting hormone (this step is absolutely optional).
- Well-watered pot should be allowed to drain. Make sure the ground is damp but not drenched. Plastic wrap the pot and the cuttings. Use stakes to try to prevent plastic from coming in contact with the foliage.
TIP: Position cuttings in a well-lit, shaded area. Never expose fresh cuts to the sun. They’ll be heated in the plastic.
Wait to water again until the soil’s surface feels dry. Cuttings will decay if they receive too much water.
In 2-3 weeks, depending on temperature (faster in warm weather) and humidity, cuttings should start to grow roots. Some cuttings take as little as a week to take root. When a cutting is pulled and the pull is resisted, it is rooted. Reminder: It might not be allowed to reproduce plants that have been trademarked or registered.
I adore this simple approach. If you don’t have a lot of hydrangeas, you are only able to root a small number of new plants at once.
When you gently bend a branch down, the area where it will contact the ground has roughly 5 to 6 inches of leaves removed from it. In this location, remove a small amount of bark from the branch’s underside. Ascertain that at least one leaf node will be below the surface.
Don’t remove the branch from the parent plant. Lower the branch into a small trench that is approximately 2 inches deep and generously top it with soil. Put a block or stone on the area that will be buried to ensure that it stays there. Additionally, this aids in keeping the moisture surrounding the branch. Keep it occasionally watered. When the branch from the mother plant develops roots, break it off and plant it in a pot or the garden.
Hydrangeas like humid, partially sunny weather. On the north and east sides of your house, they work well.
When should hydrangea cuttings be taken?
Late July is the ideal time to take hydrangea cuttings. These cuttings are semi-ripe, which means they are from the current season’s growth but are old enough to have a woody base, but they are still soft at the tip. When the cuttings are added to compost, the woody foundation keeps them from decomposing.
How to take hydrangea cuttings
Use secateurs to gather material from the hydrangea stems and a knife to trim each cutting when taking hydrangea cuttings. You must place hydrangea cuttings into a pot of grittier compost because water cannot be used to proliferate them due to their woody nature. To keep your cuttings moist until the roots have formed, keep them in a propagator (usually after about six weeks). Winter in a frigid frame or anything comparable. Then, plant the cuttings when they begin to grow in the spring.
How are hydrangeas rooted in water?
I am kind of thrilled to try out water propagation on the other plants as it has just been quite popular online (I’ll keep sharing the findings from the items we propagate as soon as I figure out what they are all!). However, some of the information I’ve read suggests that water propagation is not recommended for hydrangeas in particular since it results in a weaker root system, which makes them more likely to fail when you transplant them to soil.
Since I haven’t used it personally yet, I’ll also remark that a reader previously commented in a post that she hasn’t encountered any issues. So please let me know if you attempt it this way and are successful!
The other plants can be propagated in water quite easily:
- Grab a little plant cutting.
- Place it in a glass so that the stem is submerged in the liquid but that the leaves and other components are not (otherwise they would rot).
- Use a transparent glass so you may more easily track the root’s development.
- Water should be replaced every several days.
- Set up in a location with enough natural light (we’re using the bedroom windowsills because they have wonderful, filtered light from the window film).
From cuttings, how do I cultivate hydrangeas?
Selecting a stem for cutting is the first stage in the process of rerooting hydrangea cuttings. For hydrangea propagation in the early fall, pick a stem that is at least 6 inches (15 cm) long, has no flowers, and is fresh growth. The stem of a new growth will be greener than an old growth. Be mindful that the entire shrub may be made up of new growth if you live in a colder region where the hydrangea dies back to the ground.
Take a sharp pair of shears and cut the stem off just below a leaf node after choosing a stem to propagate the hydrangea. A set of leaves will develop at a leaf node. The hydrangea cutting should have at least one more set of leaves above the chosen leaf node and be at least 4 inches (10 cm) long. Cut the cutting off the stem.
The cutting should then be stripped of all but the top set of leaves. There should only be two leaves left on the cutting. Crosswise divide the two remaining leaves (not lengthwise).
Use rooting hormone to coat the cutting’s tip, if it is available. Hydrangea shrubs can still be effectively propagated without rooting hormone, however it will boost your chances.
Place the clipping now in wet potting soil. Ensure that the plastic bag does not touch the hydrangea cutting’s leaves as you cover the pot with it.
Place the pot in a shaded area away from the sun. Every few days, check the hydrangea cutting to make sure the soil is staying damp. The cutting will be rooted and your hydrangea propagation will be finished in two to four weeks.
That is all there is to know about hydrangea propagation. You can begin propagating hydrangeas for your yard or for friends and family with a little care and work.
Can cuttings be planted directly in the ground?
As long as you have properly prepared the cuttings, you can place them directly into the soil. According to Chick-Seward, “cut under a node at the bottom and above a node at the top.”
Remember that the soil must be able to drain well; as a result, if your garden soil is heavy clay, for instance, you will need to make a suitable potting mix. Fill tiny pots with one part compost to two parts grit with compost, advises Raven.
How can I create rooting hormone on my own?
Cinnamon, aloe vera, and honey are the three main ingredients used to manufacture rooting hormone. Although I personally like the cinnamon technique, the other options all function fairly nicely.
Cinnamon Homemade Rooting Hormone
Cinnamon works just as effectively as your standard hormone rooting powder as a rooting agent. You can give your seedlings a head start by adding a little cinnamon powder to the soil.
How to manufacture homemade rooting hormone is provided here:
- First, place a tablespoon or so of cinnamon powder on a piece of paper. Make sure the cinnamon you use is pure.
- After that, moisten the stems (this will make it easier for them to stick to the cinnamon).
- After that, coat the damp stem ends on both sides with cinnamon by rolling them in it.
- The stems should then be planted in brand-new potting soil.
The cinnamon powder will encourage your plants to grow more stems and stop fungus from developing on them. Pretty basic, yes?
Aloe Vera Homemade Rooting Hormone
- Take an aloe vera leaf and place it on your chopping board first.
- Then, point the leaf in your direction using the smallest end. Your aloe vera should be cut into from the other end.
- Push from the leaf’s end and slide the kitchen spoon in the direction of the cut. The gel will be forced out by the spoon’s pressure.
- Put the gel in a cup after that, and stir the aloe until the chunks start to resemble each other more.
- Finally, submerge your stems in the cup.
- Establish your cuttings!
Honey Homemade Rooting Hormone
- First, heat up a pot on the stove with two cups of water in it.
- Add a tablespoon or enough water to fill a large spoon after the water has thoroughly boiled.
- Stir the mixture until the honey is completely dissolved.
- Remove the honey and water mixture from the fire and let it cool for a while.
- Transfer then to a jar suitable for canning or a container with a tight lid.
- Apply the honey juice on the stems’ bottoms.
- Finally, bury the stem.
How long does a cutting take to take root in water?
Cuttings can be grouped together in a single container. Before the cuttings are completely rooted, make sure to add new water as necessary. Most plants will begin to root in 3–4 weeks, but others can take longer. The cutting is prepared for potting when the roots are at least 1-2 inches long.
How might cuttings’ roots be encouraged to grow?
Even if you already know how to root a plant in water, David Clark, a professional gardener, has some excellent advice that will help you make the procedure more effective.
He offers advice on two simple plant-starting techniques that you might not have known about.
Two practical workshops on plant propagation were recently presented by Clark at the Buffalo and Erie County Botanical Gardens.
He provided a plethora of knowledge, including these five excellent suggestions:
1. Build a miniature greenhouse. How frequently have you purchased comforters or bedding that was packaged in a plastic zipper bag? I frequently do so, and I usually consider, “This bag ought to be useful for something.
According to Clark, these bags make excellent miniature greenhouses for newly transplanted or rooted plants. Simply place the plant inside the bag and partially zip it up. This will assist in retaining moisture. In addition, a small aperture permits airflow to stop the development of mold.
“Because the plant needs to be confined, unless you have a greenhouse, Clark explained, I almost always root with a bag.
The bedding bags, as shown in the picture at the top of the article, can hold either a sizable plant or a number of smaller plants.
2. Use powders for rooting. By soaking a plant cutting in water, you can multiply plants in one of the easiest ways possible. Trim the stem horizontally above a node (see photo above). Soft, fleshy plants like the Wandering Jew, ivy, arrowhead plant, and spider plant respond nicely to this technique.
Using rooting products will boost your chances of success, according to Clark. There are numerous commercial goods available. These products contain a growth hormone to hasten the emergence of roots and destroy bacteria and fungi to stop the stem from decaying.
Dip your stem into the powder after dispensing a tiny bit of it. (Avoid inserting the stem into the product container directly.) Give the stem a minute to settle. The powder will be absorbed by the plant. Put the cutting’s tip in water; the water won’t completely wash the powder away.
He added that you can also utilize common home items to speed up roots. Cinnamon can be used to eliminate fungus and bacteria on plant stems. Make a rooting solution by dissolving one aspirin in water to encourage the formation of roots.
3. Give your new plant enough time to adjust to soil after being in water. According to Clark, if you root your cutting in water, it will grow roots that are best adapted to obtain its nutrients from water as opposed to soil. The plant could become stressed if it is transferred from water to soil right away.
As an alternative, mix a little dirt into the water you’re using to root your cutting. Do this gradually over the course of four or five weeks to allow your plant adjust to its new growing environment.
4. Learn about leaf section division. You may grow new plants from the leaves of succulents like the sansevieria pictured above. It’s not even necessary to utilize the full leaf; only a portion will do!
When you cut the leaf, Clark advised, be sure to mark which portion is the top and which is the bottom. As shown in the leftmost photo below, place the bottom portion of the leaf segment into a tray of moist perlite. (Fun fact: Perlite is a byproduct of volcanoes.)
5. Encourage plant runners as a means of division.
View the image of the Wandering Jew that is located close to the beginning of this article. Burying the stem horizontally is another approach to multiply such a plant. These nodes will produce new plants.
Do you regret skipping these workshops? On our Events page, you can see all the fascinating classes and events that will be taking place nearby Buffalo.