How To Make Fresh Flowers Safe For Cakes - Sugar & Sparrow (2024)

There’s something about working with fresh flowers in the cake decorating process that gets me so excited! The thrill always starts at the flower shop, because I really get to nerd out on different combinations of blooms. With a color palette in mind, I love to play around with different textures and varieties of flowers. But deciding on a good floral palette involves more than just what will look best – the flowers have to actually be safe for cakes.

How To Make Fresh Flowers Safe For Cakes - Sugar & Sparrow (1)

In addition to making sure the blooms you’re purchasing for your cake are organic and haven’t been sprayed with pesticides, it’s important to know ahead of time which flowers to avoid. I’ve found that in some cases, the florist won’t even know! So before I teach you how to incorporate fresh florals into your cake designs, make them last, and keep them from leaking their stem juices into your precious cake, I wanted to share a list of flowers that are safe for your cakes (and in some cases, even completely edible!) and which ones to avoid completely:

Flowers That Are Safe: Pansies, Lavender, Violas, Violets, Roses, Marigold, Cornflower, Carnations, Chrysanthemums, Day Lily, Hibiscus, Peony, Chamomile, Freesia, Gerber Daisy, Lisianthus, Queen Anne’s Lace, Primrose, Sunflowers. Here’s a longer list (and what parts of each flower are actually edible!).

Flowers To Avoid: Lily Of The Valley, Daffodil, Poinsettia, Azaleas, Calla Lily, Hyacinth, Oleander, Wisteria, Rhododendron, Hydrangea, Mistletoe, Holly, Sweet Pea. Here’s the long list.

Now that you know which flowers work best for keeping your cake tasty and non-toxic, here’s my method for decorating cakes with fresh florals:

You Will Need:

  • Fresh florals (organic, pesticide-free, and from the safe list)
  • Floral scissors or pruning tool
  • A frosted cake
  • Floral tape
  • Scissors

Step 1: Wash And Trim The Flowers

Under a sink with cold water running, gently wash your flowers to make sure there aren’t any bugs or dirt lingering in the petals. Locate where you’d like to trim the stem (I usually keep it 2-3 inches long) and place it under the water. Snip the stem at an angle and keep the trimmed portion under the water for another few seconds. I consider that the flower’s final drink.

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Pat the flowers and stems dry with a paper towel carefully.

Step 2: Wrap The Stems

Cut a piece of floral tape that’s about 2-3 inches long. Wrap the tape around the stem, focusing on covering the majority of the stem and where it’s been pruned. The goal here is to create a barrier between the cake and the stem, especially the bottom of the stem, and prevent it from leaking flower secretion (ok yes that’s gross sounding but also a good band name!) into the cake layer.

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Wrapping the stem in this way also keeps the flowers fresh for longer, because it helps hold the moisture and nourishment within the stem.

Step 3: Decorate The Cake

Now that you’ve created a good barrier between the cake and your floral stems, plus you’ve set your mind at ease by choosing flowers from the safe list, it’s time to arrange them on your cake – my favorite part! I usually take some time to loosely plan where to place the flowers (off the cake) before committing to an arrangement. Once you’re happy with a plan, stick the covered stems into the cake one by one. Simple as that!

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For larger flower bouquets, a great trick for keeping those stems from contaminating your cake is to create a small (1-2 inch) fondant ball and stick your stems into that before placing the whole thing on top of your cake. I’ve definitely used that trick for fuller floral arrangements and it works like a charm. You’ll still need to wrap your stems with floral tape before sticking them into the fondant holder to keep the moisture contained.

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And if you’re really wanting to keep those flowers fresh, you can always try using one of those plastic tubes you get from the florist. You can fill them with a little water and stick your flowers into it like a vase before submerging it into the cake. I’ve never tried that method, but I hear it works great.

Storage And Timing

Keep in mind that each flower will have a specific lifespan once you wrap the stem, so the best way to be sure how long it will remain fresh is to ask your florist beforehand. In my experience, I’ve had really good luck storing cakes with fresh florals in the refrigerator. Typically, fresh flowers will last around eight hours in the refrigerator and remain fresh for a few hours outside of the fridge environment. Even though I’ve had good luck with the fridge, I always like to prepare and place the flowers at the very last second possible (sometimes even on-site at the event) to ensure the freshest blooms. Because after all that prep work and stressing over a cake, the last thing you want to happen is wilting.

Have you tried any of these methods before? Know any tips that aren’t on my list? I’d love to know your secrets for working with fresh florals too! Let me know in the comments.

How To Make Fresh Flowers Safe For Cakes - Sugar & Sparrow (2024)

FAQs

How do you make a flower cake safe? ›

The advice that you see online most of the time is that you have to clean flowers thoroughly, wrap them up securely and place them in a posy pick so that they can't leak into the cake. Some advice even includes placing parchment paper as a barrier between the flowers and the cake.

How do you preserve fresh flowers for a cake? ›

To keep the flowers hydrated place them in a plastic bag with some water. Tie the bag up with some string and lay the flowers down in a long shallow box eg an apple box. Immediately you get to your destination place the flowers in water and flower feed. Let them drink for as long as possible before arranging.

How long will fresh flowers last on a cake? ›

Fresh flowers look beautiful on a cake for eight hours in a fridge, and remain fresh for a few hours outside of the refrigerator. Flowers will last longest if bakers have kept them in water until the last minute, and the cake is kept in the fridge at the same time.

Do you put sugar or salt in fresh flowers? ›

Step 1: Add 1 quart warm water to a clean vase. Step 2: Pour 2 Tbsp sugar into the water. The sugar will help nourish the flowers and promote opening of the blooms.

What flowers are not safe to put on a cake? ›

Flowers like hydrangeas and baby's breath, while popular in bouquets, are actually toxic. Even if you aren't eating the actual flowers, just contact with the buttercream frosting you will eat could be dangerous, so it's best to stick with flowers that are edible.

How early can you put real flowers on a cake? ›

If they're added to cake more than a day before an event, they can really lose their luster. I like to add fresh flowers to cakes the same day they will be enjoyed. While this answer makes life a bit more challenging, you have to trust me on this one. If you add them the day before, you will regret it.

How do you preserve rose petals on a cake? ›

Cover entire rose petal with crystallized sugar and gently shake off excess sugar. Place on drying rack to dry overnight. Once completely dried, petals will keep in an airtight container for about five days. Use them as you wish, for decorations or to top your favorite cupcake or cake recipes.

Does baking soda make flowers last longer? ›

Any of the fungicide products (bleach, baking soda, vodka) combined with soda or sugar and some form of acid do a good job of keeping flowers fresh.

What is the best way to preserve fresh flowers? ›

Simply put a couple of centimetres of silica sand in a bowl. Add the flower you'd like to preserve, and cover with more sand. You can leave this for a week, and it will dry out. Or, if you'd like to dry your flower faster, pop the bowl in the microwave next to another container filled with hot water.

How do you make fresh flowers last longer? ›

Freshly cut flowers will last longer if you add 1/4 teaspoon bleach per quart (1 liter) of vase water. Another popular recipe calls for 3 drops bleach and 1 teaspoon sugar in 1 quart (1 liter) water. This will also keep the water from getting cloudy and inhibit the growth of bacteria.

Can I put dried flowers on a cake the day before? ›

They will last for days on a cake. The cake itself would go bad before the flowers would. Any leftover pressed flowers can be stored in an airtight dry container and they should last for weeks.

Can pressed flowers on a cake go in the fridge? ›

Edible flowers will keep for a few days in the fridge, but once they have been put on a cake they can begin to wilt quite quickly, particularly some of the smaller flowers. Therefore, it is best to apply the flowers as close as possible to the time that the cake will be displayed.

Does white vinegar and sugar keep flowers fresh? ›

The sugar helps feed the flowers the right nutrients to survive longer even after they are cut. The vinegar keeps the pH of the flowers balanced, preserving and prolonging their lifespan.

How do you prevent bacteria in a flower vase? ›

Use a Clean Vase

A clean vase that was properly scrubbed with soap and plenty of water will sustain flowers better. Pro Tip: It's also a good idea to trim away any leaves that will be submerged under the water. They will rot and promote bacterial growth.

How much sugar do you put in fresh flowers? ›

Most flowers benefit from a continuous supply of 2% sugar in the vase solution. Some flowers, such as Gladioli, have been shown to benefit from higher concentrations, such as a 4 to 6 % sugar solution.

How long do you keep flowers in salt? ›

Mix equal parts borax and white cornmeal, and add three tablespoons of standard salt. Slowly cover the flowers with your stirred-up mixture until the flowers themselves are no longer visible. In about two weeks, your flowers will be dry and colorful.

How long do I leave flowers in salt? ›

Depending on the variety of blossoms being preserved, drying times can take anywhere from five days to three weeks. Be sure to remove the flowers when ready so as not to allow them to become too brittle.

Can I put supermarket flowers on a cake? ›

In short the answer is yes, it is safe to use fresh flowers on your wedding cake, so long as you follow these simple guidelines: Fresh flowers should be used strictly for decoration purposes. Most commercially grown flowers are treated with pesticides or fertilisers and so are not fit for consumption.

Which fresh flowers can be used to decorate cakes? ›

List of Edible Flowers for Cakes
  • Hibiscus.
  • Pansies.
  • Lilac.
  • Lavender.
  • Rose.
  • Calendula.
  • Dahlia.
  • Violas.
28 Apr 2021

What flowers are toxic on food? ›

These include agapanthus, autumn crocus, clivia, daffodil, hippeastrum, hyacinth, lily of the valley, tulips and some irises. The bright yellow and red seeds are used in bush tucker, but only after the toxins have been leached out. They're poisonous if you eat them fresh from the branch.

What is the easiest way to preserve flower petals? ›

Leave a small space between each petal to allow room for air to dry them. Find a sunny, warm space to place the drying tray. Be sure the area is well-ventilated, with open air to allow proper drying.
...
2. Dehydrate the Rose Petals
  1. Place Petals on Dehydrator Rack. ...
  2. Set Dehydrator to Low Setting. ...
  3. Allow Petals to Dry Completely.

How do you preserve flower petals when baking? ›

Bake the petals for 10 minutes at 200 degrees Fahrenheit or until the petals are crisp and break easily (like potato chips). You do not want any residual water in the petals, if your are still flexible bake for 2 more minutes, remove, and recheck. 5. Cool the petals completely and store in an airtight container.

How do you preserve flower petals without mold? ›

4 Tips To Prevent Dried Flowers From Getting Powdery Mildew
  1. Pick the right bouquet. ...
  2. Maintain good air circulation for dried flowers. ...
  3. Check on your dried flowers regularly. ...
  4. Use sulfur dust on your dried flowers.
31 Jan 2022

Will an aspirin make flowers last longer? ›

Aspirin. It's a tried-and-true way to keep roses and other cut flowers fresh longer: Put a crushed aspirin in the water before adding your flowers. Also, don't forget to change the vase water every few days.

How much baking soda do you put in flowers? ›

Dissolve one teaspoon of baking soda in a vase of water for cut flowers. Replace the water every one to two days.

Is baking soda and water good for flowers? ›

Baking soda helps the plants become less acidic and prevents fungal growth.

Can you put flowers in the fridge to keep them fresh? ›

To keep your bouquet strong and healthy, try this super-simple flower tip: Store the flowers in the refrigerator overnight. It'll help slow down the process of water loss and keep your blooms looking crisp. To store the flowers properly, fill a vase about ¾ full with water, and then put the flowers in the vase.

What to spray on flowers to preserve them? ›

You can also use hairspray to preserve fragile dried flowers—especially bouquets with particular sentimental value. They will hold up better when moved around, and colors will fade less over time.

How do you preserve flowers without them dying? ›

Hang them upside down in a dark, dry, well-ventilated area. Keeping the flowers out of direct sunlight will help them retain their color. The drying process will take about two to three weeks. Once dried, take down the flowers and spray with unscented hairspray for protection.

Does lemon juice make flowers last longer? ›

Another vase solution can be made by mixing 2 teaspoons of lemon juice or bottled "Real Lemon", 1 tablespoon of sugar, and 1/4 teaspoon of bleach in a quart of warm water. Add another 1/4 teaspoon of bleach to the vase water every 4 days. * Use a container in proportion to the amount of flowers you are using.

What is the fastest way to dry a flower? ›

Preheat your oven to its lowest heat setting and line a cookie sheet with parchment or wax paper. Lay out your flowers and make sure they're not overlapping each other. Place them in the oven and leave the door cracked so moisture can evaporate. Flowers will typically need eight to twelve hours to dry completely.

How do you make sugar flowers for cakes? ›

All you do is lightly beat an egg white with a teaspoon of water. Using a small soft brush lightly coat the surface of the petals, then sprinkle generously with caster sugar. Then leave them on a cake liner or some baking parchment to dry out completely (at least overnight).

Do you wash flowers before putting on cake? ›

Once you've ensured your flowers are safe to use and pesticide-free, make sure to clean them thoroughly before decorating your cake. After carefully washing the blooms, snip away most of the stem and remove any small insects with a toothpick.

Can you eat pressed flowers on cake? ›

The short answer is no. To avoid any consumption risk, I included a clause in my wedding cake contract making it clear that the pressed flowers were not labeled "edible" and therefore, the fondant and pressed flowers should be removed before the cake was served or eaten.

How long do flowers last after being pressed? ›

Creating an invaluable collection. With appropriate care, pressed plants can last for hundreds of years. The Museum has volumes of herbarium sheets dating from as far back as the late 1600s and early 1700s.

What fresh flowers can you use on cakes? ›

“Flowers that are beautiful as well as edible include roses, calendulas, nasturtiums, hibiscus, violets, and sunflowers, among others. One category that's also pretty safe from top to bottom are herbs like rosemary, thyme, and chamomile,” says Susan Reid, Food Editor of King Arthur Flour's Sift Magazine.

How do you prepare fresh cut flowers for food? ›

Here's a basic home recipe: 1 quart water + 2 tablespoons lemon juice + 1 tablespoon sugar + 1/2 teaspoon bleach. The sugar is the food part and the bleach will help to slow fungi and bacteria growth. Note: If you want to get all advanced you can adjust the sugar based on the flowers in your vase.

Can you use any fresh flowers on a cake? ›

Flowers that are not edible but are safe for cake decorating: Freesia, gerbera, strawflowers, lisianthus, camellia, African violets and viburnums. Flowers to avoid: Lily of the valley, daffodils, hydrangea, poinsettia, calla lilies, foxgloves, azaleas and rhododendrons.

How do you make fresh flowers? ›

Dissolve 3 tablespoons sugar and 2 tablespoons white vinegar per quart (liter) of warm water. When you fill the vase, make sure the cut stems are covered by 3-4 inches (7-10 centimeters) of the prepared water. The sugar nourishes the plants, while the vinegar inhibits bacterial growth.

Should you put sugar in water for fresh cut flowers? ›

Sugar increases fresh weight of the flowers and prolongs the vase life. Use 0.5 - 1% Floralife (concentration of sugar not specified). 2% sugar solution doubles the vase life of the cut inflorescence. Some sugar in the vase solution increases the number and size of open flowers as well as prolongs the vase life.

Can I decorate a cake with fresh flowers the day before? ›

While cake layers and frosting can be made in advance, I do not recommend adding fresh flowers to a cake ahead of time. Flowers need water to prevent them from wilting. If they're added to cake more than a day before an event, they can really lose their luster.

How do you disinfect fresh flowers? ›

Here's how:
  1. Mix. Using gloves, add ¼ teaspoon of Clorox® Disinfecting Bleach to every 1/3 gallon of water you use in the flower vase and stir to mix.
  2. Cut. Unwrap the bouquet and cut a little off the bottom of each flower stem to increase absorbency. ...
  3. Refresh Weekly As Needed.

What kind of water do you use for fresh flowers? ›

The quick answer is that using tap water that's around 50-60°F works well in most instances. This temperature helps to eliminate air bubbles in the stems and allows the plant food to travel up and feed the flowers.

How do you keep flowers fresh without water? ›

How can I keep flowers fresh overnight without water?
  1. Put several ice cubes on the flower arrangement. ...
  2. Add a few drops of glycerine to the water; this will keep it moist and fresh for a few more hours.
  3. Spray some hairspray on your arrangement; this will act as glue and hold the flowers in place.
29 Jan 2022

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