How to Grow Mums from Cuttings: Propagation Secrets for Year-Round Blooms

How to grow mums from cuttings saves money and multiplies your favorite varieties. 🌸 I’ve propagated dozens of chrysanthemums this way—some flopped, others thrived—and the secret lies in timing, sharp tools, and patience. This method turns a single plant into a small army of blooming beauties by next summer.

The best time is early fall or spring, when stems are firm but not woody. You’ll need clean pruners, rooting hormone (optional but helpful), small pots, and a mix of perlite and peat moss.

Cut 4-6 inch sections just below a leaf node—this is where roots will sprout. Dip the cut end in hormone, then stick it into your medium.

Keep cuttings in bright, indirect light and maintain 70-75°F temperatures with high humidity. Roots form in 4-6 weeks, but don’t rush transplanting—wait until you see new growth. The payoff? A garden bursting with year-round blooms that match your original plant perfectly.

Works in containers or beds, and even thrives in partial shade. Just avoid soggy soil—mums hate wet feet. Here’s how to troubleshoot common flops like yellowing leaves or rot, so you end up with a mum army instead of a casualty pile.

What you need

Step-by-Step instructions for propagating mums from cuttings

Here's my foolproof method for turning a single mum plant into a thriving bush—ready to bloom again next season.

Choose non-flowering stems that are 4-6 inches long with 2-3 sets of leaves—these will root best. I always pick stems from the outer growth of the plant, as they're more vigorous. Use clean, sharp scissors or pruners to make a 45-degree angle cut just below a leaf node. This angled cut gives you more surface area for roots to form.

Remove the lower leaves, leaving only the top 1-2 sets—this prevents rot while the cutting develops roots. Dip the cut end in rooting hormone (optional but helpful) to encourage faster root growth. I like to do this step in the morning so the cuttings have plenty of light to recover before evening.

You have two options: water or soil. For water propagation, fill a clean glass with room-temperature water and place the cuttings in it so only the bottom 1 inch is submerged. Change the water every 2-3 days to prevent bacteria buildup. You'll see tiny roots forming in 2-4 weeks—that's your signal to transplant.

For soil propagation, fill a small pot with well-draining potting mix (I use a blend of perlite and peat moss). Stick the cuttings 1-2 inches deep into the soil, keeping them upright. Water lightly until the soil feels evenly moist but not soggy. Cover the pot with a plastic bag to create a humid environment, but remove it daily for 10 minutes to prevent mold.

Place your cuttings in a spot with bright, indirect light—direct sun can scorch the leaves while they're establishing roots. A south-facing window works well, but if your space is dim, supplement with a grow light kept 6 inches away from the cuttings. You'll know the light is right when the leaves stay bright green, not yellow or pale.

Keep humidity high by misting the cuttings daily with a spray bottle. If using the plastic bag method, check for condensation buildup—if you see water droplets, remove the bag for a few hours to let excess moisture escape. Roots typically form in 3-6 weeks, depending on your climate and the mum variety.

Once roots are 1-2 inches long (for water propagation) or you see new growth (for soil propagation), it's time to transplant. Gently remove the cutting from water or soil, being careful not to damage the roots. Plant it in a 6-inch pot filled with well-draining potting mix, burying it to the same depth it was rooted.

Water thoroughly after transplanting, but avoid overwatering—the roots are still fragile. Place the new plant in partial shade for a week to help it adjust, then gradually introduce it to more sunlight over the next 7-10 days. Pinch back the top set of leaves when the plant reaches 6 inches tall to encourage bushier growth.

Tips & tricks for perfect mum propagation

These little details make all the difference when turning cuttings into thriving chrysanthemums.

Cutting Selection: Look for stems with at least two sets of healthy leaves—the more leaves, the better the cutting's ability to photosynthesize and grow roots. Avoid stems with yellowing or damaged leaves, as these can introduce disease or slow down root development. In Step 1, when you're making that 45-degree angle cut, aim for the cut to be just below a leaf node. This isn't just about aesthetics—it's about maximizing the surface area for root formation while ensuring the cutting has access to the plant's natural growth hormones.

Rooting Hormone Tip: While rooting hormone is optional, I've found it cuts rooting time by nearly 30% in my experiments. If you're impatient (who isn't?), dip the cut end in hormone powder right after making your 4-6 inch cuttings. Shake off any excess so you don't create a gummy barrier that could prevent root contact with water or soil. For best results, do this in the morning—your cuttings will have the full day to recover and start the rooting process before nightfall.

Water Propagation Watch: When using the water method in Step 2, resist the urge to use tap water straight from the faucet. Let it sit out for 24 hours first to allow chlorine to evaporate—chlorine can inhibit root growth. Change the water every 2-3 days as instructed, but also watch for algae growth. If you see green film developing, give your glass a quick scrub with mild soap and water before adding fresh water. This keeps your cuttings healthy and ready for that 2-4 week root development window.

Lighting Adjustments: The bright, indirect light requirement in Step 3 can be tricky if you don't have a south-facing window. If your space is particularly dim, consider using a grow light on a timer for 12-14 hours per day—this mimics natural daylight cycles and prevents leggy growth. Position it 6 inches away as recommended, but if you notice the leaves turning pale, move it slightly closer. The goal is to keep those leaves bright green, not bleached white.

Frequently asked questions

Got questions about growing mums from cuttings? You’re not alone! Here are some of the most common concerns—and their answers—to help you propagate like a pro.

When is the best time to take mums cuttings?

The ideal window is late spring to early summer (May–June), when mums are actively growing but haven’t yet bloomed. Avoid taking cuttings after the first frost or during extreme heat, as roots struggle to establish. For indoor propagation, use grow lights to mimic spring conditions year-round!

How do I know if my mum cutting is healthy enough to root?

Look for sturdy, disease-free stems with at least 3–4 sets of leaves. Avoid woody or yellowing cuttings—they won’t root well. Healthy cuttings should feel firm, not mushy, and have no signs of pests. A quick sniff test helps too: fresh, green-smelling stems are your best bet!

Why aren’t my mum cuttings rooting? Troubleshooting tips.

Common culprits include:

• Overwatering: soggy soil = rot. Keep the medium moist but not drenched.
• Low humidity: Use a plastic bag or humidity dome to trap moisture.
• Poor lighting: Place cuttings in bright, indirect light (no harsh sun).
• Wrong stem placement: Bury only 1–2 nodes—deeper = rot, shallower = weak roots.

Can I grow mums from cuttings indoors year-round?

Use a grow light (LED or fluorescent) for 14–16 hours/day to mimic spring conditions. Keep temps between 65–75°F and maintain humidity with a pebble tray. Indoor-grown mums may bloom later but thrive with patience—and a little extra TLC.

Will my new mum plants bloom the first year?

Probably not! Mums grown from cuttings focus on root and foliage growth first. Expect blooms in the second year if you provide full sun, balanced fertilizer, and proper winter dormancy. Pinch back flowers the first year to encourage bushier growth for next season’s showstopper blooms.

Wrapping up and next steps

Growing mums from cuttings is a rewarding way to expand your garden with vibrant blooms—and you’ve got all the tools to succeed! 🌸 With patience, the right materials, and a little care, you’ll soon enjoy lush, thriving plants ready to brighten up pots, borders, or even share with fellow gardeners.

Now’s the perfect time to put your new skills into action—grab those cuttings and start propagating!

Next step: Pick a sunny spot, keep an eye on moisture, and watch your mums flourish. Happy gardening! 🌱