Forcing branches in February: bringing spring blooms indoors

Why force branches in February?

February is grey and cold outside, but you can bring spring indoors. With a few pruning shears and branches from your own garden, you bring cherry blossom, magnolia and forsythia inside. They bloom indoors in January-March, weeks before the real outside bloom arrives.

Forcing branches is no more complicated than putting flowers in a vase. It is free (you only use your own garden material), it is beautiful (poetic bloom in your house), and it gives you something to do in dreary February months.

Besides: forcing IS pruning. You cut, you shape your tree at the same time. This is efficiency at its best.

Which trees and shrubs can you force?

Almost everything that blooms in spring can be forced. Preference goes to trees that bloom early (January-March outside). The earlier they bloom outside, the easier to force.

Easy to force: golden standards

Forsythia (Forsythia suspensa): Yellow flowers, blooms early March outside. Indoors: mid-February already in full bloom. This is THE forcing classic.

Ornamental cherry ('Prunus serrulata'): Pink flowers, very beautiful. Forcing works well.

Magnolia: Pink to white, impressive. Branches are thick, picturesque. Slower forcing, but spectacular.

Deutzia: White or pink, small, delicate. Good to force.

Spirea: White, fine stems. Very elegant when forced.

Lilac (Syringa): Purple or white, fragrant. Somewhat slow in forcing, but it pays.

Harder, but possible

Apple blossom: Pale pink flowers. Somewhat stubborn in forcing, but it works.

Pear blossom: White, beautiful. Like apple.

Dogwood (Cornus): White or yellow, slow in forcing.

Not suitable

Late-blooming varieties (May-June outside) do not force well. They need longer cold period and will not bloom if you bring them in now.

Timing: February is the prime moment

February is ideal because:

1. Flowers are already set (during winter buds have developed), they only want warmth and water.
2. Outside it is still cold, so branches are mature, not in growth.
3. You have at least 4-6 weeks before real spring outside kicks into full gear.

January: much too early, flowers not set. March: still possible, but faster. April: too late, outside already blooming fully.

Select branches: thicker is better

Choose branches about pencil thickness, 30-45 cm long. Make sure there are many flower buds on them.

How do you recognise a flower bud?

• Rounder and fuller than leaf buds.
• Usually grouped at the end of branches.
• Thicker than regular buds.

If you pick from a thin twig with two-three leaf buds and no flower buds, they will not bloom.

Cut branches carefully with sharp secateurs. Make slanting cuts, never straight.

Preparation: water and warmth

Arrange in water

Fill a vase with warm water. Cold water slows bloom; warm water (20-22 degrees) speeds it up.

Remove lower leaves from your branches (those in water will rot). Keep leaves higher up.

Cut branches slanting at the base (this increases contact area with water).

Place

Set the vase on a light, warm windowsill, not direct sun. Direct sunlight dries out flowers. 16-20 degrees is good.

A north-facing windowsill (lots of light, no direct sun) is perfect.

Change water

Every two-three days: fresh water. This prevents bacterial growth in the water.

Also cut the branches slanting again each time, about 1 cm.

Step-by-step forcing

Day 1-3: Do nothing

Branches drink water. Flower buds start to swell slightly. Nothing visible yet.

Day 4-7: Buds visible

Buds grow. Feel them gently; they become fuller. First colour differences visible.

Day 8-14: Flowers appearing

For forsythia: yellow flowers visible, not fully open.

For cherry blossom: pink colours showing in buds, starting to open.

Still change water every two-three days.

Day 15+: Full bloom

Branches in full bloom. Magnolia, cherry blossom: impressive. Forsythia: fully yellow. Lilacs: full flower clusters.

This lasts 2-4 weeks, depending on temperature and variety.

Speeding up

You can speed up forcing:

• Higher temperature: 22-24 degrees instead of 18-20. Faster, but flowers fade faster.
• Warmer water: Warm water speeds it up. Hot water burns.
• More light: Do not place directly in sun, but on a well-lit windowsill.
• Oxygen supplement: This is overkill at home, ignore this.

Normal: 2-4 weeks. With acceleration: 10-14 days possible, but less bloom.

Frequently asked questions

Why don't my branches bloom?

Usually because you selected branches without flower buds. Only leaf buds (small, pointed) do not bloom. Or because you start in March, too late.

Also: some branches rot before they bloom. This happens if water contains lots of bacteria. Change water more often and do not place them in direct sunlight.

Can forced branches be planted outside?

No. Once forced, branches have exhausted their blooming reserves. They bloom next season normally (outside), but not abundantly.

This is fine: you enjoy this bloom, and next year your tree blooms normally outside.

How long do forced flowers last?

Forsythia: 2-4 weeks. Cherry blossom: 1-2 weeks (delicate). Magnolia: 10-14 days. Lilacs: 2 weeks.

Lower temperature (16-18 degrees) extends it.

Can I force multiple branches at once?

Yes, many. Place them in different vases. They bloom at different times, so you have two-three months continuous bloom.

Fragrance: do all forced flowers have scent?

No. Forsythia: no scent. Cherry blossom: light scent. Lilacs: strong scent (wow). Magnolia: light scent.

Forced lilacs smell strong and sweet.

Step-by-step

Step 1: Select branches

Choose branches 30-45 cm with clear flower buds (round, full). About pencil thickness.

Step 2: Cut slanting

Sharp secateurs. Slanting cut at base. Remove lower leaves.

Step 3: Place in warm water

Vase with warm water (20-22 degrees). Set on warm, light windowsill (not direct sun).

Step 4: Change water every 2-3 days

Fresh water, cut branches slanting again.

Step 5: Wait and observe

Day 1-3: swelling. Day 4-7: colour differences. Day 8-14: flowers visible. Day 15+: full bloom.

Step 6: Enjoy

Enjoy your homemade fruiting. Two to four weeks bloom. Then discard.

Varieties and their forcing schedule

Forsythia: Start February 1. Bloom February 15-March 1. Easy.

Ornamental cherry ('Prunus'): Start February 1. Bloom February 20-March 10. Beautiful pink.

Magnolia: Start February 1. Bloom February 25-March 20. Slow, spectacular.

Spirea: Start February 1. Bloom February 15-March 5. Delicate white.

Lilacs: Start February 5. Bloom March 1-15. Somewhat slow, but fragrant.

The art of choosing

Walk to your garden. Look at what blooms next spring (or where you know it blooms). Cut this now. Promise yourself: next year more branches, more vases, more continuity.

Forcing is cheap, free even (you only need your own branches), and it gives immediate results. This is gardening for the impatient.

What after

Forced flower branches can go to compost. The plant itself outside blooms next spring normally.

But you have learned something: where flowers appear, when they emerge, how beautiful they are. Next February you know exactly what you will force.

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