How-to Guide
How to Force Spring Branches to Bloom Indoors
The short answer
Spring-flowering trees and shrubs (forsythia, quince, cherry, crabapple, pussy willow, magnolia) form their flower buds the previous summer, and by late winter, after weeks of chilling outdoors, those buds can be persuaded to open indoors. Iowa State Extension's timing: forsythia and pussy willow can be forced from about late February, while harder-to-force subjects such as crabapples, magnolias, and redbuds are best cut starting in March. Choose branches at least 12 inches long that carry plump, rounded flower buds; the small, narrow, pointed buds are leaf buds.
The method is just water and patience: recut the stems, stand them in water in a cool room out of direct sun (soaking branches overnight in tepid water, or misting and loosely covering them with plastic at first, helps keep buds from drying), and change the water every few days. Buds typically open in one to five weeks depending on species and how close to natural bloom time you cut, and the flowers last around five to seven days, longer if kept cool and away from heat sources.
What to cut, and when
- Late February (easiest): forsythia and pussy willow; both force reliably within a few weeks. Witch hazel is another early candidate.
- March: flowering quince, cherry, crabapple, magnolia, redbud, serviceberry; the closer to their natural bloom date you cut, the faster and more reliably they open.
- Choose year-old shoots at least 12 inches long, well-budded with fat, round flower buds; take them from spots where the pruning improves the shrub's shape anyway.
- Cut on a mild day when wood is not frozen solid, using clean, sharp pruners (see our tool care guide).
The forcing routine
- 1Recut and hydrate — Indoors, recut the stem ends and stand branches in deep water. An overnight soak in tepid water, or misting the branches and covering loosely with plastic for the first days in a cool room, keeps buds from desiccating before they can take up water.
- 2Keep them cool and bright, not sunny — A cool room with indirect light gives the best flower quality. Heat and direct sun rush weak blooms or abort buds.
- 3Change the water — Refresh the vase water every few days and recut stems if uptake seems to stall. Floral preservative is optional but can extend vase life.
- 4Move to display at color — When buds show color, bring the branches wherever you want them. Cooler display spots stretch the five-to-seven-day bloom window; near a radiator shortens it.
Why it works
Temperate shrubs will not bloom until their buds have accumulated enough hours of winter chilling; that is the dormancy insurance that stops them flowering during a January thaw. By late winter the chilling requirement has been met and the buds are simply waiting for warmth, so your living room reads as spring. Cut too early, before chilling is complete, and buds open poorly or not at all, which is why December forsythia disappoints but late-February forsythia is nearly foolproof. The same trick in bulb form is covered in our paperwhites guide.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- Iowa State University Extension - How to Force Branches of Spring-Flowering Trees and Shrubs — Forsythia and pussy willow can be forced as early as late February while crabapple, magnolia, and redbud are best forced starting in March; cut branches at least 12 inches long with plump rounded flower buds (narrow pointed buds are leaf buds); buds open in roughly 1-5 weeks and flowers last about 5-7 days, longer when kept cool and out of direct sun.
- University of New Hampshire Extension - Forcing Branches Indoors — Spring-flowering shrubs set flower buds the previous year and need sufficient winter chilling before branches cut in late winter will bloom indoors in water.
- University of Vermont Extension - Forcing Branches for Winter Flowers — Branches of forsythia, quince, cherry, and similar shrubs cut in late winter can be forced into bloom indoors using water, cool temperatures, and indirect light.