Soft, Woody, Hollow: Cutting Each Stem Type Right
An angled cut isn't enough for everything. Why tulip, lilac and amaryllis each need a different technique — and how to tell them apart.
‘Cut stems at an angle' is the first advice everyone hears — and for most flowers it's correct. But a tulip stem isn't built like a lilac branch, and a hollow amaryllis stem wants something the other two don't need at all. Treat all three the same and you give away vase days. Here we sort the three basic types — and the right technique behind each.
Diagnosis first: which stem type are you holding? Soft stems are bendy, juicy, easy to dent — tulips, daffodils, anemones, ranunculus. Woody stems are firm, fibrous, almost like thin wood — lilac, hydrangea, the lower third of roses, eucalyptus. Hollow stems are firm on the outside but empty inside like a straw — amaryllis, delphinium, some dahlias. These three families call for three different moves.
Soft stems (tulip, daffodil): simply angled, sharp, into shallow water. A sharp knife cuts cleanly without crushing — a blunt scissor squeezes the soft vessels shut. Key for tulips: they keep lengthening in the vase, by up to 2 cm a day, and bend toward the light. This isn't true growth by cell division but a stretching of the soft cells already in place as they fill with water — and it's completely normal, not a sign of trouble. Keep the water level low (around 3–5 cm); water that's too deep speeds up exactly this stretching and makes the soft stems flop. Daffodils release a sap after cutting that harms other flowers — give them around six hours in separate water before mixing them in.
Woody stems (lilac, hydrangea): cut at an angle and additionally slit the lower end lengthwise 2–3 cm, or cut a small cross. Woody tissue draws too little water through the small cut surface alone — the vertical split greatly increases the absorbing area. What you must never do: smash the stem with a hammer. This old florist trick destroys the conducting channels more than it helps and hands bacteria an ideal entry point. A clean lengthwise cut with a knife is far better.
Hollow stems (amaryllis): here comes the trick most people don't know. After cutting, turn the stem upside down and fill the hollow tube with lukewarm water. Then seal the end with a small plug of cotton wool, or hold your thumb over it until the stem is standing in the vase. The trapped water supports the stem from the inside and keeps the heavy bloom upright. Because hollow stems tend to split and curl at the end, a thin wooden stick or straw inside acts as a support — or a rubber band just below the waterline. And keep amaryllis out of deep water, or the hollow end will rot.
All three share a common denominator: sharp tool, fresh cut every few days, lower leaves off, clean water. The stem-type technique is the fine-tuning on top — it decides whether a bouquet reaches its full days or droops at the halfway mark. At the Veiling Rhein-Maas we see daily how differently stems are built; sorting by type is something we do almost automatically behind the counter before anything goes into water. At home it costs you no extra minute — just the right move.
Frequently asked
- How do I tell if a stem is hollow?
- Right after cutting, look at the cut surface: if there's an open, empty channel in the center, the stem is hollow — typical for amaryllis and delphinium. If the surface is fibrous and solid throughout, it's a woody or soft stem.
- Should I really stop crushing woody stems?
- Correct. Crushing with a hammer was common for a long time but is now considered outdated: it destroys the conducting vessels and creates a large, rotting surface for bacteria. A clean lengthwise cut of 2–3 cm with a sharp knife enlarges the absorbing area more gently and lasts longer.
- Why does my tulip bend in the vase even though it's fresh?
- That's not a defect but biology: tulips keep stretching after cutting and bend toward light via the hormone auxin. Turn the vase a quarter turn each day to keep the arrangement balanced. A low water level helps too, since deep water speeds up the stretching of the soft stems.
- Do I really need to fill the hollow amaryllis tube with water?
- It's optional but effective. The trapped water supports the stem from inside and keeps the heavy bloom upright longer. Alternatively, or in addition, a thin wooden stick inside or a rubber band just below the waterline stabilizes it. Never stand amaryllis too deep, or the open end will rot.