When to Propagate: A Seasonal Guide

Timing changes success rates more than technique does. The same cutting that roots in three weeks in May can sit dormant for four months if taken in December.

The default rule: propagate during active growth — spring and summer for most plants. 188 of the 225 plants here root best in spring, 172 in summer.

But the exceptions are the useful part of this page, because they're the ones people get wrong. Some plants must be propagated in autumn or in the dead of winter, and taking those cuttings in spring is why they failed.

Spring

The main season. Sap is rising, growth is resuming, and cuttings root fastest. Nearly every houseplant, succulent, and soft-stemmed plant belongs here.

Also the specific window for:

• Division of perennials — Hosta, Daylily, Coneflower, Black-Eyed Susan, Coral Bells, Garden Phlox, Astilbe, Yarrow, Bee Balm, Shasta Daisy, Chrysanthemum.
• Bleeding Heart — very early spring, before top growth appears, because the roots are brittle and better handled while dormant.
• Dahlia and Canna — tubers and rhizomes divided and planted after the last frost.
• Ginger, turmeric, potato, onion, sweet potato slips — all started in spring for a full growing season.
• Lilac — a narrow window right after flowering, and easy to miss. Once the window closes, use root suckers instead.
• Ferns and moisture-lovers — Boston Fern, Maidenhair Fern, Kangaroo Paw Fern, when humidity is easiest to maintain.
• Christmas and Easter Cactus — right after blooming, not during.

Summer

The season for woody shrubs, which is what makes summer distinct from spring rather than just a continuation of it.

Softwood and semi-hardwood cuttings both come from this window, and the difference matters:

• Early summer (softwood) — soft, flexible new growth. Roots fastest but wilts fastest. Hydrangea, Butterfly Bush, Dogwood, Weigela, Spirea, Rose of Sharon, Fuchsia, Blueberry.
• Mid to late summer (semi-hardwood) — this year's growth just starting to firm up. The reliable window for Camellia, Azalea, Gardenia, Jasmine, Honeysuckle, Viburnum, Rosemary, Bougainvillea, Boxwood, Holly.

Also summer-specific:

• Bearded Iris — divided in late summer, 6–8 weeks after flowering.
• Blackberry and Raspberry — tip layering, bending canes to the ground.
• Wisteria and Magnolia — layering and air layering started now, checked next season.
• Japanese Maple — air layering.
• Strawberry runners — pinned down as they appear.

Dogwood has a hard deadline: once its wood hardens past early summer, success rates drop sharply. Earlier is better.

Autumn — 28 plants

Fewer plants, but for these autumn is genuinely correct, not a compromise.

Bulbs — dig and divide after foliage fully dies back: Daffodil, Tulip, Lily, Amaryllis.

The bulb rule: never dig while leaves are still green. Those leaves are feeding the bulb for next year's flowers. Wait for complete die-back.

Perennials that prefer fall division: Peony (specifically fall, after foliage dies back — and each division needs 3–5 eyes or it may not bloom for years), plus Hosta, Daylily, Coneflower, Coral Bells, Garden Phlox, Astilbe, Yarrow, Shasta Daisy, Black-Eyed Susan, which tolerate either spring or fall.

Conifers start now: Juniper, Arborvitae, and Holly root from dormant-season wood — the opposite pattern from flowering shrubs. Forsythia and Boxwood also take fall semi-hardwood cuttings.

Garlic is planted in fall for a harvest the following summer.

Roses — hardwood cuttings taken in fall and left outdoors over winter have better odds for most people than summer softwood attempts.

Cilantro gets a fall sowing because it bolts in summer heat. It's a cool-season plant, and spring-and-fall sowings are the only ones that work.

Winter — 15 plants

The hardwood cutting season, and the one most people never think to use.

While fruit trees and vines are leafless and fully dormant, you can cut pencil-thick sections of last year's wood, push them two-thirds deep into soil, and let them root over winter. No humidity tent, no misting, no indoor setup.

Hardwood cuttings in winter: Grape Vine, Fig, Mulberry, Pomegranate, Currant, Elderberry, Crape Myrtle.

Grafting season: Apple, Pear, Peach, Cherry, Plum, Japanese Maple — done while dormant.

Also winter: Juniper and Arborvitae cuttings continue from fall.

The one mistake that ruins hardwood cuttings: planting them upside down. A dormant stick gives no clue which end was up. Cut the bottom flat and the top at an angle, and you can't get it wrong. This matters most for Grape Vine, where inverted cuttings simply never root.

Year-round — 3 plants

Reliable in any month, given a warm room and reasonable light:

Green Onion · Lucky Bamboo · Pothos

In practice several others come close indoors — Tradescantia, Small-Leaf Spiderwort, Coleus, mint, basil, and Creeping Jenny all root within a week or two at almost any time of year with enough light.

What actually drives the timing

Three factors, in order of importance:

1. Warmth. More decisive than the calendar. Ficus barely roots below about 65F. Monstera roots fastest above 70F. A heated indoor room in January can outperform a cold greenhouse in April.

2. Active growth. A plant building new tissue can spare energy for roots. A dormant plant can't. Snake plant, ZZ plant, and most succulents nearly stop in winter, and cuttings taken then may sit motionless for months.

3. Wood maturity — for shrubs and trees only. Softwood, semi-hardwood, and hardwood are three different windows with three different techniques, and using the wrong one is a common quiet failure.

Season-by-season quick reference

If you're propagating out of season

Sometimes you're pruning anyway, or you were given a cutting. It's usually still worth trying:

• Add warmth — bottom heat helps significantly.
• Add light — a grow light compensates for short winter days.
• Add patience. Expect roughly double the usual rooting time.
• Take extra cuttings to offset lower success rates.

The one case where waiting is genuinely better is dormant woody plants. A lavender or rosemary cutting taken in midwinter is far more likely to rot than root.

Related: Water Propagation hub · Soil & Cutting Methods hub · Succulents & Cacti hub · Troubleshooting & Rot hub