Transform Pre-Made Gumpaste Flowers with Custom Color
Chef Alan TetreaultIn this tutorial: Preparing the Flower Spray · Coloring the Roses · Petal Dust vs. Luster Dust · Coloring the Blossoms · Coloring the Leaves · Reassembling & Placing the Spray
Pre-made gumpaste flower sprays are a convenient shortcut for cake decorators – but straight out of the package, they can look flat and generic. With just a few colors of petal dust and a couple of brushes, decorators can transform a store-bought spray into something that looks custom-made and full of life. In this tutorial, Chef Alan Tetreault of Global Sugar Art demonstrates how to color a pre-made T-rose spray – including the roses, buds, blossoms, and leaves – using a layered dusting technique that adds depth, dimension, and a natural look that matches any cake.
📌 This is part of the Pre-Made Gumpaste Flowers series: Coloring Pre-Made Gumpaste Flowers (you're here) · Using Pre-Made Gumpaste Flowers on a Cake
What You'll Need
- Pre-made gumpaste flower spray – a T-rose spray or any commercial gumpaste flower arrangement —
- Petal dust in magenta – for deepening the center and edges of roses —
- Petal dust in cosmos pink – for overbrushing roses with a softer pink layer —
- Petal dust in yellow – for coloring the throats of blossoms —
- Petal dust in white (or white satin / pearl) – for brightening the white blossoms —
- Petal dust in rose green – for coloring and deepening the leaves —
- Flat nylon brushes in assorted sizes – for applying dust to petals and leaves —
- Small round brush – for detailing flower throats and leaf centers —
- Large soft brush – for removing excess dust —
- Paper towels – cut into quarters for isolating individual flowers while dusting, and as a work surface
Preparing the Flower Spray
Start by removing the flower spray from its packaging and pulling away the protective foam. One of the advantages of commercial gumpaste flowers is that they are made from a thicker, harder paste than homemade versions – so there is no need to handle them delicately. Unlike handmade gumpaste roses, which tend to be thin and brittle, commercial flowers are quite durable and can withstand handling during the coloring process.
Before beginning, cut a paper towel square into four pieces and snip each piece halfway down the center. These will be used to wrap around individual flowers to isolate them while dusting – keeping color off the surrounding petals and leaves. Lay down a full paper towel as a work surface to catch stray dust.
💡 Tip: Don't be afraid to handle pre-made gumpaste flowers firmly. The commercial paste is designed to be durable – they won't break like homemade flowers would.
Coloring the Roses
Chef Alan Tetreault uses a two-color layering technique to give each rose natural-looking depth and dimension.
↪ Step 1: Isolate the Rose
Wrap one of the cut paper towel pieces around the base of the rose so only the bloom is exposed. This keeps the dust from getting on surrounding leaves and blossoms.
↪ Step 2: Apply Magenta to the Center and Edges
Using a flat nylon brush, apply magenta petal dust to the center of the rose and along the outer edges of the petals. The center should be noticeably darker than the rest of the bloom – just as it would be on a real rose. Don't worry about the color looking too dark at this stage; the next layer will soften it.
↪ Step 3: Overbrush with Cosmos Pink
Switch to a slightly larger flat brush and apply cosmos pink petal dust over the entire rose, covering the magenta underneath. The darker magenta layer remains visible beneath the cosmos pink, creating a natural gradient – deeper in the center and lighter on the outer petals.
↪ Step 4: Adjust the Depth
After overbrushing, step back and evaluate. If the center needs to be darker, go back in with the magenta brush and add more depth. Use a large soft brush or a puff of air to remove any excess dust from the surface.
↪ Step 5: Color the Buds
Repeat the same two-color technique – magenta first, then cosmos pink – on each rosebud. The buds can simply be laid flat on the paper towel for easy dusting.
💡 Tip: Work on a paper towel to catch excess dust. This keeps the workspace clean and makes it easy to see the color buildup on the flower.
Petal Dust vs. Luster Dust
Chef Alan Tetreault uses petal dust for this technique because it colors gumpaste more evenly and produces a solid, matte finish – ideal for making a significant color change. Luster dust, by contrast, adds a sheen and highlights the existing colors underneath rather than fully covering them. When the goal is to transform the overall color of a flower – such as changing a peachy pink to a true rose pink – petal dust is the better choice.
Coloring the Blossoms
The small blossoms (sometimes called stephanotis or filler blossoms) in the spray benefit from two simple touches:
- Yellow throats – Using a small brush, apply yellow petal dust directly into the center of each blossom to create a realistic-looking throat. This small detail adds life to an otherwise plain white flower.
- Brighter whites – Using flat white petal dust (or white satin or pearl dust), brush over the petals of each blossom to brighten the white and give it a cleaner, more finished look.
The calyx (the small green cup at the base of the blossom) can also be deepened with a touch of yellow in the center and throat area.
Coloring the Leaves
Realistic leaf coloring is one of the details that sets a beautifully finished spray apart from an ordinary one. Chef Alan Tetreault points out that on a real rose bush, leaves often show a hint of the flower's color – especially near the stem and along the center vein.
↪ Step 1: Add a Touch of the Flower Color
Using the magenta brush, apply a small amount of magenta petal dust down the center of each leaf, concentrating on the base where the leaf meets the stem. Don't worry about applying too much – the green layer will cover and soften it.
↪ Step 2: Overbrush with Rose Green
Switch to a flat brush loaded with rose green petal dust and go over the entire leaf. The green covers the magenta but allows a subtle hint of pink to show through at the center – exactly as it would in nature.
↪ Step 3: Color the Calyxes and Bud Bases
Apply a little green petal dust to the calyxes of the buds and any small green areas on the stem to deepen and unify the greenery.
💡 Tip: On a real rose bush, the leaves near a pink or red rose show a trace of that color along the center vein. Mimicking this detail with a touch of the flower's dust color makes sugar leaves look remarkably realistic.
Reassembling & Placing the Spray on a Cake
Once all the elements are colored – roses, buds, blossoms, and leaves – reassemble the spray and arrange it so the flowers sit naturally. Tuck the stem underneath and adjust the positioning.
Commercial sprays typically come with a small ribbon tie. Decorators should feel free to swap this out for a ribbon that matches the cake's color scheme – simply cut off the original ribbon and replace it.
To place the spray on a cake, bend the wires gently to follow the curve of the cake's surface. For an especially dramatic look, try placing two sprays back to back on the cake – the combined arrangement creates a fuller, more impressive floral display on even a simple buttercream cake.
💡 Tip: Pre-made sprays come in many different sizes, flower types, and configurations. Decorators can also purchase individual gumpaste flowers and assemble custom sprays to suit any design.
This tutorial is part of Global Sugar Art's library of free cake decorating videos by Chef Alan Tetreault. Browse all tutorials →
