Flower Library
Button Bush
Berzelia · Bruniaceae
Berzelia, known in German as Knopfbusch or button bush, is one of the most exciting structural greens there is: the branch tips carry densely packed, pea-sized green button buds that look like tiny buttons. In an arrangement it does not replace a bloom but adds texture, structure and a modern, slightly wild character. We buy our berzelia stem-checked at the Veiling Rhein-Maas auction, because firm, plump buds are the decisive mark of freshness here.
- Season
- January – February – March – April – May – November – December
- Vase life
- 10–21 days
- Latin name
- Berzelia
- Colors
- Fresh green, Grey-green, Creamy white (when open)
The trade mainly carries Berzelia lanuginosa and Berzelia galpinii, which differ slightly in bud size and shade of green. Both belong to the small Bruniaceae family, found almost exclusively in the South African Cape flora. The needle-like, heather-style foliage along the stem is part of its character and can stay on, as long as it does not sit in the water.
In floral work berzelia is a classic structural element: the round buds set accents in an arrangement the way craspedia or thistles do, only more finely distributed. It works beautifully as a contrast to large, soft blooms and gives modern, pared-back bouquets the backbone they need.
We especially like combining berzelia in Cape-style bouquets with protea and eucalyptus, where it belongs both botanically and stylistically. It is equally at home next to blue thistles or as a calm green anchor in white winter arrangements, for instance in the Advent season.
A typical mistake is treating berzelia like a delicate flowering filler. The stems are woody and want a generous fresh cut, otherwise they barely take up water and the buds shrivel early. Fresh stock shows plump, glossy green buttons without brown patches.
Another plus: berzelia dries excellently. Hang the bouquet upside down after its fresh phase and the button structure keeps for months, which is why it also has a firm place in dried floristry.
Is Button Bush toxic to children and pets?
- Children
- Mildly irritating
- Cats
- Mildly irritating
- Dogs
- Mildly irritating
No toxins documented, but barely studied toxicologically. To be safe, keep out of reach of pets and small children.
Typical symptoms: If larger amounts are eaten, stomach upset and vomiting cannot be ruled out.
In an emergency:call the German poison control centre in Bonn on +49 228 19240 (24/7) — for pets, contact an emergency vet directly. This information does not replace medical or veterinary advice.
Overview: toxic & non-toxic plants for cats, dogs and children
Care
- 01Give the woody stems a long, angled cut with a sharp knife so the water channels are open.
- 02Strip the needle-like foliage from the lower stem; it must not sit in the water.
- 03Place in a clean vase with fresh, lukewarm water and flower food.
- 04Keep cool and out of direct sun and the buds will last two to three weeks.
- 05Change the water every two to three days and re-cut the stems as you do.
- 06To dry, hang upside down in an airy, shaded spot.
Frequently asked
- How long does berzelia last in the vase?
- Berzelia is among the longest-lasting cut greens: with a fresh cut and regular water changes, ten days to three weeks is normal. Afterwards it dries without fuss and keeps for many months as a dried element.
- Is berzelia toxic to cats or dogs?
- No toxins are documented for berzelia, but the plant has barely been studied toxicologically. We therefore recommend keeping it, like all cut material, out of reach of pets and small children, and seeking veterinary advice if larger amounts are chewed.
- When is berzelia available as cut foliage?
- The main season for South African imports runs from November to May, exactly when structure for winter and spring arrangements is in demand here. In high summer berzelia is much harder to find at the auction.
- Do the green buttons still open into flowers?
- In the vase the spheres usually stay in their green bud stage, and that is exactly how they are used in floristry. In their native habitat they open into creamy-white fluffy flowers, but in an arrangement the firm green button is the actual design element.