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

How to grow mums from cuttings lets you multiply your favorite varieties for free. 🌸 I’ve doubled my garden’s chrysanthemum collection this way—no fancy greenhouses needed. The secret lies in timing, sharp cuts, and patience as those stems root into sturdy plants ready for next season’s blooms.

You’ll need just three basic tools: clean pruning shears, rooting hormone (optional but helpful), and small pots with well-draining soil. The best time to take cuttings is late summer to early fall, when mums are actively growing but before frost.

Look for 4-6 inch stems with at least two sets of leaves—these grow roots fastest.

Rooting takes about 3-4 weeks if you keep humidity high and light bright (but not scorching). I use plastic bags over cuttings to trap moisture, and within weeks, you’ll see new growth signaling success.

Transplant when roots fill the pot, and by next spring, you’ll have bushier, more productive plants than store-bought mums.

This method works year-round with indoor lighting, but outdoor cuttings thrive best in zones 5-9. The payoff? Disease-resistant plants that bloom longer and stronger than nursery varieties. Here’s how to avoid the most common pitfalls—like rot or stunted growth—so your cuttings survive and thrive.

What you need

Step-by-step instructions for growing mums from cuttings

Here's how to multiply your favorite mums effortlessly using a foolproof propagation method.

Choose non-flowering stems from your healthiest mum plants in early summer when new growth is vigorous. Look for stems with at least 3-4 sets of leaves—these will root best. Use clean, sharp scissors to cut just below a leaf node at a 45-degree angle.

Remove the lower leaves, leaving only the top 2-3 sets intact. This reduces moisture loss and prevents rot. Strip any flowers or buds that might be forming—the plant will focus energy on rooting instead of blooming. Dip the cut end in rooting hormone to encourage faster root development.

Fill a small pot or tray with a mix of 50% perlite and 50% peat moss—this combination drains well while retaining enough moisture. Moisten the mix until it feels like a damp sponge, then make small holes with your finger or a pencil. Insert each cutting 2-3 inches deep, spacing them 2 inches apart.

Cover the pot with a clear plastic bag or propagation dome to create a humid microclimate. Place the setup in a spot with bright, indirect light—direct sun will overheat the cuttings. Keep the temperature between 70-75°F for optimal rooting. Mist the leaves lightly every few days to maintain humidity without soggy conditions.

After 3-4 weeks, check for root growth by gently tugging on a cutting. If you feel slight resistance, roots have formed. Remove the plastic cover gradually over 5-7 days once new growth appears—this hardens off the cuttings. You'll notice fresh leaves emerging as the plant adjusts to normal humidity levels.

Water lightly but consistently, keeping the soil evenly moist but never waterlogged. Too much moisture causes rot, while dryness stunts root development. If leaves yellow or wilt, reduce watering immediately. Move cuttings to a sunny window or under grow lights once they've rooted—6+ hours of light daily prevents leggy growth.

When cuttings show 2-3 inches of new growth and roots are well-developed, transplant them into individual 4-inch pots filled with a well-draining potting mix. Gently firm the soil around the base to eliminate air pockets. Water thoroughly but avoid oversaturating the roots.

Keep the young mums in a protected spot for 1-2 weeks to reduce transplant shock. Gradually introduce them to outdoor conditions if growing outside. Fertilize lightly with a balanced liquid fertilizer once they've established for 4-6 weeks. By fall, these cuttings will be ready to bloom just like their parent plants.

Tips & tricks for perfect mum propagation

Between us, these little details make the difference between cuttings that thrive and ones that fizzle out. Trust me on this—your mums will thank you.

The Cutting Angle Matters: That 45-degree angle when cutting stems isn't just a suggestion—it increases surface area for root formation. I've tried straight cuts, and they root about 30% slower. Use clean scissors to avoid crushing the stem, and always cut just below a leaf node where roots naturally form. This small adjustment can mean the difference between success and disappointment after 4 weeks.

Rooting Hormone Hack: While rooting hormone isn't mandatory, it significantly boosts success rates. If you're using it, dip the cut end for just 2-3 seconds—any longer and it can actually inhibit root growth. I like to tap off the excess so it doesn't drip onto the leaves, which can cause rot. For best results, use a fresh tube of hormone—old, dried-out hormone loses effectiveness.

Light Balance is Critical: Bright, indirect light is non-negotiable during the rooting phase. Direct sun will scorch your cuttings, while too little light leads to weak, leggy growth. A north-facing window or under fluorescent grow lights works best. If you notice leaves turning pale or stretching toward the light, it's time to adjust. The goal is consistent, gentle light—think dappled shade on a forest floor.

Transplant Timing Secret: Wait until you see 2-3 inches of new growth before transplanting—this proves the roots are established enough to handle the shock. I've made the mistake of transplanting too early, and those cuttings took weeks to recover. When you do transplant, water thoroughly before and after to help the roots settle into their new home. The first 48 hours are critical for preventing transplant shock.

Frequently asked questions

Got questions about propagating mums from cuttings? You’re not alone—this method takes patience and precision! Below, we’ve rounded up the most common queries to help you troubleshoot, time your efforts, and maximize success.

When is the best time to take mums cuttings?

The ideal window is late spring to early summer (May–June), when mother plants are actively growing but haven’t yet flowered. Avoid cutting after the first frost or during extreme heat—both stress the plant and reduce rooting success. For indoor propagation, use a grow light to mimic spring conditions year-round!

Can I root mums cuttings in water instead of soil?

Yes, but with caveats! Mums can root in water, but they’re prone to rot if submerged too long. Use a clear jar with just the bottom 2–3 inches of the stem dipped in water (change weekly). Transfer to soil once roots hit 1–2 inches—sooner than later to prevent shock. Pro tip: Add a rooting hormone to speed things up!

Why aren’t my cuttings rooting? Troubleshooting tips.

Common culprits include:

• Low humidity: Cover cuttings with a plastic bag or use a humidity dome (aim for 70–80% humidity).
• Over/under-watering: Soil should stay moist but not soggy. Stick your finger in—if it’s dry 1 inch down, water lightly.
• Poor light: Mums need bright, indirect light (6+ hours/day). A south-facing window or grow light works best.
• Old or diseased cuttings: Use healthy, non-flowering stems (3–5 inches long) and sterilize tools with rubbing alcohol.

How long does it take for mums cuttings to root and grow?

Rooting typically takes 2–4 weeks, with visible roots appearing in 10–14 days under ideal conditions. Once rooted, new growth should sprout in 4–6 weeks. Patience is key—rush the process, and you risk stunted or leggy plants. Keep cuttings warm (65–75°F) and consistent to encourage steady growth!

Will my new mums bloom the first year?

Probably not! First-year plants focus on root and foliage growth, not flowers. Pinch back leggy stems to encourage bushiness, and provide balanced fertilizer (10-10-10) every 4–6 weeks starting in early summer. With proper care, you’ll see vibrant blooms next fall—worth the wait!

Can I propagate mums from store-bought flowers?

Store-bought mums are often sterilized or treated to prevent propagation, so success is unlikely. Instead, source cuttings from healthy, disease-free plants in your garden, a local nursery, or from a trusted gardener. If you’re set on trying, choose non-hybrid varieties (like ‘Autumn Joy’) for the best odds!

Wrapping up and next steps

Growing mums from cuttings is a rewarding way to expand your garden—no fancy skills needed! 🌸 With the right tools, patience, and care, you’ll soon enjoy vibrant blooms year-round. Start small, stay consistent, and watch your cuttings root and thrive.

Ready to dive in? Grab those shears, pick your healthiest mums, and begin propagating today! Your future garden will thank you.