There is a big old azalea by my back steps that puts on the kind of spring show that makes the neighbors slow down on their walk. For years I assumed a shrub like that was something you bought full-grown and expensive at the garden center. Then a gardening friend showed me how easy it is to grow brand-new azaleas from cuttings off a plant you already love, and now I have three more of that same shrub tucked around the yard, all for free. Late summer, right about now, is one of the best windows to try it, so let me walk you through how I do it.
When to take azalea cuttings
The best time runs from late spring through late summer, once this year’s new growth has begun to firm up but has not gone fully woody. That in-between stage is called semi-hardwood, and it is where azaleas root best. For most evergreen azaleas, early summer just after they finish blooming is the sweet spot, but I have had good luck taking cuttings straight through August. Evergreen types root the most willingly. The deciduous kinds, the ones that drop their leaves in fall and often smell wonderful, are famously stubborn, so if you are just starting out, practice on an evergreen azalea first.
Not sure if a stem is ready? Bend one gently. Semi-hardwood should feel firm with just a little flex and a faint sheen, not so soft that it is rubbery and not so hard that it snaps.
What you’ll need
- A healthy parent azalea to take cuttings from
- Clean, sharp pruners or a knife
- Rooting hormone, powder or gel (optional, but it genuinely helps with woody cuttings like these)
- A gritty, free-draining mix: half peat or coco coir and half perlite is the classic recipe
- Small pots or a tray with drainage holes
- A clear plastic bag, dome, or cut-off bottle to hold humidity
- A warm spot with bright, indirect light
Step by step
- Take your cutting in the morning, when the plant is well hydrated. Snip a piece of this year’s growth about four to six inches long, cutting just below a leaf node.
- Strip the leaves off the lower half of the stem, leaving three or four small leaves at the top. If those top leaves are large, cut them in half to cut down on water loss.
- Optional but worth it on woody cuttings: scrape a thin sliver of bark off one side of the base with your knife. This little wound exposes more tissue for roots to form.
- Dip the bottom inch in rooting hormone and tap off the excess.
- Poke a hole in your moistened mix with a pencil, slide the cutting in so the bare stem is buried, and firm the mix around it. Water once to settle everything in.
- Cover with a plastic dome or bag to keep the air around the leaves humid, but keep the plastic from touching the leaves. A couple of short sticks make good tent poles.
- Set it somewhere warm and bright but out of direct sun, and keep the mix damp, never soggy.
The one thing that kills most cuttings: rot
When I lose azalea cuttings, it is almost always to rot, not to drying out. The stems sit in warm, humid, moist conditions for weeks, which is exactly what fungus likes too. The fixes are simple: use a gritty mix that drains fast, never let the pot stand in a saucer of water, and crack the dome open for a few minutes every couple of days to let fresh air in and keep mold down. Damp is the goal; wet is the enemy. If a cutting goes black and mushy at the base, pull it right away so it does not spread to the others.
Should you root azaleas in water?
This is the question I get most, because water-rooting works so nicely for pothos and other houseplants. With azaleas, I do not recommend it. They are woody, they root slowly, and a stem left in a glass of water for two months almost always rots before it roots. The few water roots that do form tend to be brittle and hate the eventual move into soil. Give azaleas a gritty, airy medium from the start and you will have far better luck.
How long it takes, and caring for rooted cuttings
Be patient, because azaleas are in no hurry. Most cuttings take anywhere from four to eight weeks to begin rooting, and some take a couple of months. You will know it is working when you see fresh new leaves at the tip, or when a very gentle tug meets a little resistance. Try not to keep pulling them up to check.
Once a cutting has rooted, pot it on into an acidic, ericaceous potting mix, since azaleas dislike lime, and keep it out of harsh sun and wind. Go easy on feeding, a weak acid-loving fertilizer at most. The trickiest stretch is the first winter: young cuttings are tender, so protect them from hard freezes. I keep mine in a sheltered spot and move them into an unheated garage when a real cold snap is coming. It can take a season or two before they are big enough to plant out, but they will get there.
Frequently asked questions
What is the best time of year to take azalea cuttings?
Late spring through late summer, once the new growth has firmed up into semi-hardwood. For evergreen azaleas, right after they flower in early summer is ideal, though late summer works well too.
Do azalea cuttings need rooting hormone?
Not strictly, but I would use it. Azaleas are woody and slow to root, and rooting hormone noticeably speeds things up and improves your success rate. Without it, expect fewer cuttings to take.
How long do azalea cuttings take to root?
Usually four to eight weeks, and sometimes up to two or three months. Fresh new growth at the top of the cutting is the clearest sign that roots have formed.
Can you propagate azaleas from a leaf?
No. Unlike African violets or jade, azaleas will not grow from a single leaf. You need a stem cutting with a few leaves attached.
Why do my azalea cuttings keep dying?
The usual culprit is rot from a mix that stays too wet, or cuttings drying out because the humidity cover slipped. Aim for a fast-draining medium kept just damp, with humid air around the leaves.
Related guides
If you enjoyed this, here are a few more shrubs I have had fun multiplying at home:
- Boxwood Cuttings: The Easiest Way to Grow Your Own
- How to Propagate Lavender From Cuttings
- Grow More Lilacs: Easy Propagation From Suckers
— Nora Ellison