Fresh Flowers On Cake

How to put fresh flowers on cake and how to make them food safe

Putting fresh flowers on a cake is a great way to add some gorgeous decoration to your wedding cake but it’s important to make sure your flowers are prepared properly. Placing fresh flowers into a cake without sealing them can cause toxic chemicals (like pesticides) to leach into the cake and potentially cause a major food hazard to your guests. Follow this simple guide on how to put fresh flowers on cake without making anyone sick. 

how to put fresh flowers on cake and how to make them food safe

And if you’re interested in making the gorgeous marble wedding cake, be sure to check out the other tutorials in this series. 

White velvet cake recipe

How to make your first cake 

How to get sharp edges on your buttercream

How to make a marble wedding cake

Why do you need to make flowers food safe?

Aside from leaching toxic chemicals into your cake, some flowers are actually poisonous to humans if eaten. Some of these flowers can cause an upset stomach but some are deadly poisonous. 

That doesn’t mean you CAN’T use all these flowers on your cake but you should take extra precaution to make sure they are sealed, safe and clean before placing on the cake. 

Here is a list of poisonous flowers, some might surprise you. 

Step 1 – Where do you buy fresh flowers for your cake

I talked to my florist friend Kim who is the owner of Swoon Floral Design here in Portland and she says she get’s her flowers at the flower market but you can get your flowers from a grocery store or whatever is most convenient to you. Make sure you buy more flowers than you think you need because some of the flowers might wilt and not look very nice when it’s time to use them. 

Choose some flowers that are large as the main attraction and then some smaller flowers and leaves to use as fillers. If you are only using large flowers it will be harder to fill in holes in certain areas. 

Step 2 – How to keep fresh flowers from wilting

Usually flowers come with a packet of flower vitamins that you mix in with the water to help keep them fresh. Follow the instructions on how to mix this and then keep your flowers in water until you use them to avoid wilting. 

Step 3 – Who puts the fresh flowers on cake?

Once upon a time, I delivered a rustic buttercream cake to a wedding and placed it on the cake table. The florist arrived as I was setting up and proceeded to shove fresh roses into the cake without even asking me.

Even in the early days… I was pretty sure this wasn’t ok. After that day I always let the florist, bride, coordinator, everyone know ahead of time that I would place the flowers myself. A copy of the cake sketch would be forwarded to the florist as well.

how to safely add fresh flowers to your wedding cake

I would instruct the bride to let the florist know to leave whatever flowers she had for me for the cake in a bucket of water by the cake table. If there wasn’t a florist, I would let the bride know that I did not buy flowers and if she wanted flowers someone would have to buy them and place them at the table. 

Step 4 – What tools and materials do I need to put fresh flowers on cake

You’ll need floral tape, scissors and plastic wrap. In the past I have used straws or water picks and those work pretty good too but sometimes my stems are too thick for the straws. 

Step 5 – How to make fresh flowers food safe

Making your fresh flowers food safe is pretty simple although it can be time consuming depending on how many flowers you need to put on the cake. I would typically allow myself an extra hour at set-up to place flowers. 

Cut your main large flower and a few smaller flowers to accent it. 

Trim some plastic wrap to about a 3″x3″ square. 

Take about 4″ of floral tape and give it a stretch to activate the stickiness. Wrap the floral tape around the plastic wrap to secure it to the flower

Now you can insert the flower into the cake without fear of the water leaking into the cake

What are some other ways to make flowers food safe? 

You can also use a product called Safety Seal which is food safe wax that when melted, you can dip the stems of flowers into the wax to seal them. This is great if you have access to a microwave when you need to put the flowers into the cake 

I have also used chocolate as a seal on the back of some gerbera daisies that I used to decorate my cream tart cake

Cream Tart decorated with fresh flowers sealed with chocolate

What about edible flowers?

Ok so now that you’re probably scared to even put one flower on a cake, let me put your mind at ease. Toxicity levels will vary based on the level of contact with the flowers. For example, ingesting even a small part of some flowers can cause symptoms, whereas for others you’d need to ingest a large amount to see any effect. With any exposure or symptoms, it’s advised that you contact the Poison Control Center (800-222-1222) or your doctor immediately.

Stick to eating the cake and you should be ok. 


There are also quite a few flowers that are completely safe and can even be eaten. These edible flowers do not need to be sealed and can be placed directly on the cake IF they haven’t been treated with any pesticides. Even edible flowers should not be eaten if they aren’t organically grown. 

Fresh flowers on cake make a stunning cake decoration but it's important to make them food safe! Fresh flowers contain pesticides and some flowers are even poisonous. Make sure you're not adding toxic flowers to your cake with this fresh flowers on cake guide

10 comments on “Fresh Flowers On Cake

  1. Is it okay for the leaves to touch the cake? You only talk about safety for the stems. This is great information and thanks!

  2. Hi Lizzo,

    In addition to your tips I’ve got one. I always glaze the back of fresh flowers so little bugs don’t survive and you also seal the flowers and leaves and not only the stems.

    Love, Anneke

  3. Thanks so much for this awesome tutorial! When putting fresh flowers on the cake, how long in advance would you prep the flowers? Would you wait until having the cake in the venue to do it? Or would you have them prepped before and just insert them on the cake upon delivery?
    Thank you 🙂

    1. If the flowers are in water spikes then you can do it the day before but if not then you have to do it during set up to avoid wilting

  4. Are there certain varieties of flowers you suggest for cake decorating because they are less likely to wilt and brown? A friend wants white roses but is getting married outdoors in June and I am very concerned they will turn brown quickly. Are there varieties of white flowers known to be hardier, or any product you can use to prevent petal browning in these conditions other than what was mentioned above?

    1. Roses last a very long time. When I did my rose wedding cake tutorial I left them on the cake for two days and they were still fresh.

  5. Is this still the correct way to do fresh flowers? I’ve read floral tape is no longer considered food safe. So much info out there and I don’t know what’s correct! Help! I have my first order requesting fresh flowers! TIA!!!

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