Flowers are beautiful—but they only last for so long. If you’re looking for a way to preserve some colorful blooms, consider casting them in a resin project. With resin, the possibilities are endless—preserve dried flowers in resin coasters, paperweights, jewelry, geodes, or a range of other objects. 

In this guide, we’ll show you how to create a beautiful floral piece from start to finish, from drying flowers for resin to casting and curing the final product. 

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Supplies for Casting Dried Flowers in Resin 

Preserving dried flowers in resin requires flowers, of course. But there are a few other supplies you’ll need, too. 

Silica Gel 

Drying flowers is an essential first step before casting them in resin. If the flowers aren’t completely dry, they can eventually rot in the resin mold. Using silica gel, which is available at any local craft store, you can quickly and thoroughly dry flowers. 

Silicone Molds 

To shape your piece, you will pour resin and arrange flowers in a silicone mold. You can find molds in a range of different shapes, so whether you want to preserve dried flowers in resin coasters, trays, jewelry, or geometric shapes, you can easily find a mold to bring your vision to life. 

yellow flowers preserved in resin coaster
You can preserve dried flowers in a range of resin projects, from coasters to jewelry. 

Resin 

Resin comes in two parts, resin and hardener, which are usually sold together. To ensure the resin cures completely, you have to carefully measure and mix the two parts together (more on that later!).  

Mixing and Pouring Cups 

Especially to create larger resin pieces, you may need to add several layers of resin. Make sure you have a few cups for mixing, measuring, and pouring the liquid.

Protective Gear 

Make sure to wear protective gear when working with both silica gel and resin. A respirator, gloves, and a long-sleeve shirt and long pants can help protect you from the chemicals in these compounds. 

How to Dry Flowers for Resin 

There are two main ways to approach drying flowers for resin: pressing them and preserving them with silica gel. The pressing method is simpler—just place the blooms between sheets of parchment paper and shut them in a heavy book for about a week—but the silica gel method allows you to preserve the flower in 3D. Here’s how to do it. 

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Step 1: Prepare the Containers and Flowers

Select a container that will fit the entire flower without squishing it. It can be glass or plastic as long as it has a lid that seals tightly—try, for example, glass mason jars or Tupperware containers. Cover the bottom of the dish in a thin layer of silica gel. 

To prepare the flowers, trim the stems according to your preference. You may want a portion of the stem to be visible in your project, or you may prefer to only see the bloom. Remove any outer petals that have spots or imperfections.

Step 2: Add the Flower and Fill With Silica 

Add the flower to the container. Using a small scoop, fill in silica gel around the outside of the flower. Once you build up that foundation, fill the inner part of the flower with the silica—aim to get as much as possible between the petals. Continue adding the gel until the flower is completely submerged, and then cover tightly with the container’s lid. 

Large purple flower in container filled with white powder stuff.
To create dried flowers for resin, cover the entire bloom in silica gel in a lidded container. 

Step 3: Wait 

Now, it’s just a waiting game. Check the instructions that came with your silica gel—it should contain a list of flowers with their corresponding drying times. Baby’s breath, for example, only takes about three days to dry out, while it takes five or six days to preserve a peony. 

Step 4: Remove the Flowers

After the designated number of days, gently empty the contents of the container into a larger dish. Pick up the flower and shake off the excess silica—or, try using a makeup brush or paintbrush to gently dust it off. A flower that’s completely dried and ready for casting should feel like tissue paper. 

Rose, purple flower, white flower, and little red flowers on a table top
Once your flowers are dry and feel like tissue paper, they are ready to be cast in resin. 

Casting Dried Flowers in Resin Step by Step 

Once you’ve dried flowers for resin, you are ready to begin casting them. However, before jumping in, it’s important to brief yourself on safety precautions for resin use. Make sure you have the proper setup—including a well-ventilated area, a half respirator mask, protective clothing, and gloves—so you stay safe while creating your piece of art. 

Step 1: Plan and Prepare Your Mold

Select your mold and determine how you want to arrange your flowers within it. Make any last adjustments to your flowers—like trimming the stem or removing outer petals—to ensure they fit completely within the mold. 

Step 2: Mix the Resin

Mix your resin according to the package directions. Generally, you will use a 1:1 ratio of resin and hardener. Stir them together until you no longer see any cloudy swirls—about three minutes.

Step 3: Pour the Resin and Arrange the Flowers

Pour just enough resin into your mold to cover the bottom with a thin layer—this will give the flowers something to adhere to. Place the flowers into the resin. Continue adding thin layers of resin until the flowers are completely covered. If the flowers begin floating or move out of place, use a toothpick to adjust them back into position.

If you see any bubbles in your resin, hold a butane torch or utility lighter close to the resin. The heat thins out the resin and removes the bubbles. 

Large pink flower in container filled with resin.
Pour a thin layer of resin, add your flowers, and continue adding resin until the flower is completely covered. 

Step 4: Demold the Resin Piece

Allow the resin to cure for the time specified on the package—usually 24 hours. At this point, the resin should be completely dry and not sticky. Carefully remove your piece from the mold, and then allow it to continue curing for several more days (typically three to seven, but check the label on your resin for specific instructions). 

Once it’s fully cured, make any final touches to the piece—for example, trimming any excess resin or ridges with a utility knife or polishing it for a perfectly glossy finish—and you will have a beautiful, handmade work of art. 

large purple flower suspended in resin square.
Carefully remove the resin piece from the mold, and then allow it to fully cure for three to seven more days. 

Make Your Blooms Last Forever

Stop tossing flowers after just a few days. By preserving dried flowers in resin, you can make your beautiful blooms last forever as paperweights, coasters, or jewelry. The possibilities are endless! 

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Written by:

Katie Wolf