Gumpaste Hydrangeas | The Trick to Realistic Sugar Flowers
Chef Alan TetreaultIn this tutorial: What You'll Need · Cutting and Veining the Petals · Drying and Adding Centers · Making Wired Hydrangeas · Coloring the Blossoms · Attaching Hydrangeas to a Cake · Assembling Wired Sprays · The Finished Cake
Hydrangeas have become one of the most popular flowers in wedding cake design, and for good reason – newer cultivars like the Limelight, with its lime-green center and soft pink blush, offer stunning color combinations that suit nearly any palette. In this detailed tutorial, Chef Alan Tetreault demonstrates two techniques for making gumpaste hydrangeas: single blossoms that press directly onto a cake's surface, and wired blossoms that can be assembled into full, natural-looking sprays. He walks through every step – from rolling and veining the paste to dusting on color – so decorators of any skill level can add these elegant flowers to their repertoire.
What You'll Need
- Alan Tetreault Hydrangea Blossom Set – silicone veiner mold and two cutters · shop
- Chocpan Gumpaste – rolls thin, dries strong, fewer breakages · shop
- Atlas Pasta Machine – for rolling paste to a consistent thickness · shop
- 26-Gauge White Wire – for wired blossoms and sprays · shop
- Floral Tape – half-width, for taping wired sprays · shop
- Crystal Colors Orchid Green Dust – pale green base color · shop
- Global Sugar Art Lime Green Dust – brighter green accent · shop
- Global Sugar Art Cosmos Pink Dust – pink blush for petal edges · shop
- Alento Spring Green Fondant – for covering tiers · shop
- Airbrush Pearl Shimmer – for the bottom tier finish · shop
- Edible Glue or Water – for attaching centers and blossoms
- Cornstarch – to prevent sticking
- Small paintbrush, sharp knife, needle-nose pliers
- Crumpled aluminum foil or small paint tray – for drying
Cutting and Veining the Petals
Chef Alan begins by rolling out Chocpan gumpaste to about a number five setting on the Atlas pasta machine. The paste should not be too thin – especially when using a silicone veiner, which can push through overly thin paste and cause tearing.
- Dust both sides of the rolled paste lightly with cornstarch.
- Cut out the blossoms using the hydrangea cutters, then place the extras back under plastic to prevent drying.
- To vein, dust both sides of a cut blossom with cornstarch, then flip and tap off the excess.
- Set the blossom in the center of the concave part of the silicone mold, aligning the registration lines.
- Place the top half of the mold on and press firmly – but only on the four outer edges.
⚠️ Do not press in the center of the mold. Pressing the center thins the paste so much that wired flowers will break apart at the insertion point.
- Lift the veined blossom out of the mold. It should have crisp, realistic petal detail.
Drying and Adding Centers
There are two easy ways to dry the veined blossoms so they hold a natural cupped shape:
- Crumpled aluminum foil – nestle each blossom into a shallow depression in loosely crumpled foil.
- Small paint tray – set each blossom into one of the wells.
To add the center detail:
- Roll a very small piece of gumpaste into a ball.
- Brush a tiny spot of edible glue or water into the center of the blossom.
- Drop the ball into the center.
- Use the tip of a knife to cut an X across the top of the ball, pressing it down into the glue.
- Let the blossoms dry overnight before handling or coloring.
Making Wired Hydrangeas
Wired hydrangeas allow decorators to build full sprays and position individual blossoms at different angles – essential for a natural, garden-fresh look.
↪ Wiring the Center
- Cut a length of 26-gauge wire and bend a very small, tight hook at the top using needle-nose pliers – like a tiny shepherd's hook.
- Take a small piece of gumpaste and roll it into a cylinder.
- Dip the hooked end of the wire into edible glue, then thread it through the paste.
- Pull the paste up and roll it around the wire about a quarter to half inch down, forming a small ball at the top – similar to the shape of a cotton swab.
- Score an X across the top of the ball with a knife, just as with the unwired version.
- Hang upside down to dry.
💡 Tip: These wired centers without a flower attached make excellent hydrangea buds. Chef Alan uses them on the finished cake to add realism between the full blossoms.
↪ Adding the Blossom to the Wire
- Vein a blossom using the silicone mold as described above.
- Place a small dot of edible glue in the center of the blossom.
- Thread the wire through the center of the flower from the front.
- Gently pull the blossom up the wire until it meets the center ball.
- Turn the flower upside down and pinch the paste together at the back, smoothing it down the wire so the back is seamless.
- Hang upside down to dry.
💡 Tip: Come back after 10–15 minutes to adjust the petals while the paste is still slightly pliable. Once fully dry, repositioning risks breakage.
Coloring the Blossoms
Chef Alan uses three petal dusts to achieve the popular Limelight hydrangea look:
- Crystal Colors Orchid Green – a pale green applied mostly to the center of each blossom as the base layer.
- Global Sugar Art Lime Green – a brighter green brushed over the center to add depth and vibrancy.
- Global Sugar Art Cosmos Pink – a soft pink dusted lightly on the outer edges of the petals for a natural blush.
⚠️ Hold each blossom in your hand while dusting. Brushing them flat on a board will snap the delicate petals. If the backs of the blossoms will be visible, dust those as well.
The same three-color approach works for a wide range of hydrangea varieties – simply adjust the ratios or swap in purples, blues, ivories, or soft yellows to match any wedding palette.
Attaching Hydrangeas to a Cake
For single (unwired) blossoms applied directly to the side or top of a cake:
- Roll a small ball of gumpaste and press it onto the cake where the blossom will go – this acts as an anchor.
- Lightly wet the back of the blossom with water or edible glue.
- Press the blossom onto the gumpaste anchor.
💡 Tip: Mix both small and large blossoms for a more natural, layered look – real hydrangea clusters are never perfectly uniform.
Assembling Wired Sprays
To build a full wired hydrangea spray:
- Start by grouping several wired centers (buds) together at the top.
- Add full wired blossoms below, varying sizes and positions.
- Tape everything together with half-width floral tape, wrapping down the combined stem.
- Use needle-nose pliers to bend individual wires and position buds and blossoms naturally.
The finished sprays can be inserted into a cake via a posy pick or positioned as a cake topper.
💡 Tip: Pre-made gumpaste hydrangeas are also available on the Global Sugar Art website for decorators who want the look without the drying time.
The Finished Cake
Chef Alan's demonstration cake features an 8-inch bottom tier and a 5-inch top tier:
- Top tier – covered in Alento Spring Green fondant for a fresh, garden-inspired base.
- Bottom tier – covered in fondant and finished with airbrush pearl shimmer, applied in 3–4 thin passes for a subtle, luminous sheen.
- Hydrangeas – a combination of single blossoms pressed along the side of the bottom tier, wired sprays, and scattered buds for a natural, organic arrangement.
This tutorial is part of Global Sugar Art's library of free cake decorating videos by Chef Alan Tetreault. Browse all tutorials →
