DIY Flower Cake: Step-by-Step Guide and Ideas

A flower cake is an arrangement of fresh flowers shaped like a cake: round, sometimes tiered, with "iced" sides of ribbon or leaves. It is not a dessert but a gift that lasts a week and replaces both a bouquet and a card. Here is how to make a flower cake yourself: materials, step-by-step instructions and care tips.

Ready-made foam arrangements are available among our flower boxes and flower baskets.

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What a flower cake is

The base is floral foam that holds water, so the flowers stay fresh without a vase. A flower cake makes a great gift for birthdays, anniversaries, weddings or corporate events, or a table centrepiece. Do not confuse it with a real cake decorated with fresh flowers — we covered the safety of those in fresh flowers on cakes.

What you need

• A round floral foam block (or two sizes for two tiers) and a tray.
• Wide ribbon or salal or ruscus leaves for the sides, pins or glue.
• Flowers with dense heads: spray roses, Santini chrysanthemums, carnations, alstroemeria, hypericum.
• A sharp knife, secateurs and picks (if adding sweets).

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Step by step

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Place the flowers tightly so no foam shows. Start at the edge of the "tier" and work towards the centre. For impact, alternate large and small heads or create a pattern with different shades.

Design ideas

• Classic — white and pink roses with a pearl ribbon.
• Berry — red roses, hypericum and blackberries (decorative, not for eating).
• Party — bright carnations and chrysanthemums with a number topper.
• Sweet — flowers and sweets on picks; see DIY candy bouquet for ideas.

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Ordering a flower cake: what to check

• Size: 20–25 cm in diameter for a gift, 30 cm or more for a party table.
• Flowers: roses, spray chrysanthemums and carnations last longest in floral foam.
• Berries and sweets: if the arrangement includes real berries or macarons, give it the same day.
• Care: ask the florist how to water the foam — the arrangement will last longer.

Care

Every 2 days, gently water the foam from above so it does not drip onto the table; keep the arrangement cool and away from radiators and sun. A flower cake lasts 5–7 days, with chrysanthemums and carnations up to two weeks.

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FAQ

Can you eat a flower cake?

No, it is an arrangement of fresh flowers in floral foam, not a dessert.

How many flowers do I need?

For a 20 cm cake, roughly 30–50 short heads depending on their size.

How do I transport a flower cake?

In a lidded box on a flat surface; do not overwater the foam before the trip — water it on arrival.

Author: Maria Svitlovir

Graduated from Taras Shevchenko National University of Kyiv, Institute of Biology and Medicine (2001). BSc in Biology, MSc in Horticulture. Writes about plants, works at a garden centre selecting and repotting plants, and contributes to plant reference guides.

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