2026.10.16

How to Embed Dried Flowers in Resin: Essential Tips & Techniques to Avoid Common Mistakes

yassy

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Hello, everyone! It's Yassy from Crafters! (・∀・)

There is something truly captivating about botanical resin craft—capturing delicate dried flowers suspended in crystal-clear resin to create stunning jewelry and home decor. Not only do I love making these pieces myself, but whenever I spot beautiful floral resin items at handmade craft markets, I can rarely resist taking them home!

However, embedding dried botanicals into resin is full of hidden pitfalls. If you simply drop a dry blossom into liquid resin and cure it, you will likely encounter ruined projects: flowers turning murky brown, endless bubbles erupting around petals, or worse, the resin failing to cure and remaining sticky.

In this guide, I will walk you through the essential precautions, preparation techniques, and a foolproof step-by-step process so beginners can succeed every time. I'm sharing all the reliable methods I've refined through countless rounds of trial and error in my own workshop.

The 4 Most Common Mistakes When Embedding Dried Flowers in Resin
How to Select and Prepare the Right Dried Flowers
The Essential Step: Pre-Coating Your Flowers
- Three Huge Benefits of Pre-Coating
- A Pro-Technique: Pre-Coating with a Flat Brush
Step-by-Step Guide to Embedding Flowers Flawlessly
UV/LED Resin vs. 2-Part Epoxy Resin: What to Keep in Mind
- When Using UV/LED Resin
- When Using 2-Part Epoxy Resin
How to Protect Botanical Resin from Fading Over Time
- Finish with a UV-Resistant Top Coat
- Display and Storage Rules
Yassy's Golden Workflow for Flawless Botanical Resin
- Tools & Materials
- My Exact Process
Common Pitfalls to Avoid: Quick Checklist
Create Timeless Botanical Resin Art with Confidence

The 4 Most Common Mistakes When Embedding Dried Flowers in Resin

Most resin casting failures with dried flowers stem from predictable factors. Understanding the underlying causes is the fastest shortcut to preventing ruined crafts.

Here are the four major trouble spots crafters encounter when working without proper preparation:

1. Petal Discoloration and Unwanted Transparency (Browning or Going See-Through)

The most frequent issue is color alteration. A vibrant pink or yellow bloom can turn a muddy brown after curing, or the petals become completely translucent, losing their visual impact.

This occurs because liquid resin rapidly soaks into microscopic gaps and cell structures within the petals. Furthermore, the exothermic reaction (heat generated as the resin cures) literally cooks delicate plant matter, causing thermal discoloration.

2. Endless Micro-Bubbles Rising from Flowers

Everything might look pristine when you pour the resin, but once you place it under a UV lamp or let it rest, a cloud of tiny bubbles appears clingy around the blossom. No matter how many bubbles you pop, new ones keep rising from underneath.

This happens because air trapped inside the intricate nooks, stamens, and layered petals is displaced and forced out by the denser resin liquid. Highly dimensional, layered blossoms are especially prone to this issue.

3. Incomplete Curing and Sticky Surfaces

Sometimes, even after following the recommended curing times, the resin stays tacky or soft in the center. The culprits here are residual moisture or oils inside the flower.

Any remaining moisture interferes with the chemical curing process. UV/LED resin is particularly sensitive to moisture; even slight humidity trapped in a petal can prevent the resin from fully polymerizing.

4. Floating and Drifting Flowers

You carefully set a blossom at the bottom of your silicone mold, but as soon as you pour the resin, it bobs to the surface or drifts off-center, leaving parts of the petal protruding out of the finished piece.

Dried flowers are extremely light and contain air pockets, giving them natural buoyancy. Without specific techniques to anchor them, keeping them precisely where you want them is nearly impossible.

How to Select and Prepare the Right Dried Flowers

Your first step toward flawless floral resin work starts with choosing the proper botanical material. Just because a flower was bought at a craft shop does not mean it is instantly ready for resin.

Use Only 100% Moisture-Free Botanicals

Flowers used for resin must be bone-dry, with practically zero moisture content. If a petal feels even slightly supple, soft, or cool to the touch, do not use it.

Air-dried botanicals (hanging method) often absorb ambient humidity from the room. For reliable results, opt for flowers dried using silica gel crystals. Silica-dried flowers retain their vibrant colors, delicate shapes, and are completely moisture-free.

If you plan to use air-dried flowers, place them in an airtight container packed with desiccant silica gel for several days before crafting to draw out any lingering moisture.

Be Aware of the Difference Between Dried and Preserved Flowers

A very common mix-up among beginners is confusing dried flowers with preserved flowers. Preserved flowers are treated with glycerin, oils, and specialized liquids to keep them feeling soft and fresh. In other words, they are not actually dry.

If you embed oil-laden preserved flowers directly into resin, the colored oils leach out into the resin, causing cloudiness, bleeding, and severe curing failure.

Always verify that your material is clearly labeled as "dried flower." If you must work with preserved florals, they require specialized degreasing treatments (such as soaking in ethanol) or protective sealants prior to use.

Choose Flowers Known for Color Retention

Some botanical varieties hold their color brilliantly inside resin, while others fade quickly. If you want your creations to look vibrant over time, choose hearty varieties at the supply stage.

Flowers that pair exceptionally well with resin include statice, globe amaranth (gomphrena), strawflower (helichrysum), mimosa, and laceflower (queen anne's lace). Their pigments are stable and resist fading inside clear mediums.

In contrast, thin rose petals and delicate hydrangea petals easily turn transparent as resin permeates them, and they fade faster under UV exposure. Use these only if you want an ethereal, translucent look, or ensure you seal them thoroughly beforehand.

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The Essential Step: Pre-Coating Your Flowers

Placing an untreated dried flower straight into a pool of resin is an absolute beginner misstep. You should always perform a preparation step called "pre-coating." Spending a few minutes on this single task eliminates about 90% of all common failures.

Pre-coating simply means brushing a micro-thin layer of resin or sealer over the entire dried bloom and fully curing it before placing it into your final project.

Three Huge Benefits of Pre-Coating

Trapping Air and Preventing Bubbles: Applying a thin coat allows resin to sink into tiny crevices and fuzz on the petals ahead of time. Once cured, it seals all trapped air inside, so bubbles cannot leak out into your main pour.
Reinforcing Delicate Shapes: Dried botanicals are fragile and crumble easily under tweezers. Curing a thin shield around them makes them sturdier and much easier to manipulate.
Preventing Deformity and Floating: A pre-coated blossom holds its shape effortlessly and bonds securely when anchored in a mold, preventing buoyant floating.

A Pro-Technique: Pre-Coating with a Flat Brush

Here is my reliable pre-coating technique. You will need a flat craft brush, low-viscosity (runny) UV/LED resin, and a silicone craft mat.

Place the dried flower on a clean silicone mat.
Hold the blossom gently with fine-tip tweezers. Dip your flat brush into low-viscosity resin and delicately paint the resin across petals and into crevices. Avoid applying a thick glob; work the liquid into the underside and stem base with the tip of the bristles.
Let the coated blossom rest for a few minutes. Capillary action will pull the resin deep into the botanical structure. If you see micro-bubbles surfacing, pop them with a toothpick or a brief sweep of an embossing heat tool.
Once bubbles are gone, cure thoroughly with your UV/LED craft lamp. Flip the bloom over, coat the reverse side, and cure again to ensure 360-degree protection.

Step-by-Step Guide to Embedding Flowers Flawlessly

With your pre-coated flowers ready, it's time to assemble your piece in a silicone mold or open bezel frame. Work patiently in layers rather than pouring everything at once.

Step 1: Create a Clear Base Layer

Never place your flower onto the bare bottom of an empty mold. Pour a thin foundation layer of clear resin into the mold—about 1 to 2 mm deep is sufficient. Cure this foundation completely under your lamp. This base ensures petals won't poke through the front face of your finished piece.

Step 2: Anchor the Flower with an Adhesive Dab

Place a small drop of liquid resin onto the cured base layer to act as craft glue. Using tweezers, position your pre-coated flower precisely where you want it. Press down gently, then flash-cure with your UV light for 5 to 10 seconds. This "tack cure" locks the flower firmly into place so it cannot shift or float when you pour the bulk resin.

Step 3: Pour the Main Layer and Final Cure

Slowly pour your main resin into the mold up to the brim. To minimize bubble formation, let the liquid run down the inner wall of the mold rather than dumping it directly onto the flower. Inspect the piece from the top and sides for any stray bubbles, removing them with a toothpick. Finally, run a full curing cycle according to your resin manufacturer's instructions. If the piece is thick, flip the mold and cure from the underside as well.

UV/LED Resin vs. 2-Part Epoxy Resin: What to Keep in Mind

Your flower preparation differs slightly depending on whether you are using UV/LED resin or two-part epoxy resin.

When Using UV/LED Resin

Ideal for smaller crafts like earrings, pendants, and hair accessories. UV/LED resin cures in minutes, but you must watch out for two specific factors:

Exothermic Heat: UV/LED resin undergoes a sudden chemical reaction under high-intensity light, heating up significantly. Rapid temperature spikes can scorch and discolor plant pigments. Keep your lamp at an appropriate distance and avoid using excessively high-wattage lights directly on delicate pieces.
Light Blockage: Dark flowers or dense, layered clusters block UV light from passing through. Any resin trapped underneath will remain uncured. Keep layouts open, or ensure you cure thoroughly from the reverse side.

When Using 2-Part Epoxy Resin

Used for larger, thicker creations such as paperweights, coasters, and home decor items. Epoxy resin remains liquid for hours before solidifying:

Sealing is Mandatory: Because epoxy stays liquid for a prolonged period, unsealed flowers will gradually soak up resin, rendering the petals transparent and dull. Pre-coating is even more critical when working with epoxy.
Mass Heat Buildup: Pouring large volumes of epoxy resin all at once can cause a thermal runaway, boiling the mixture and turning embedded flowers dark brown. Pour in measured, shallow increments according to the product guidelines.

How to Protect Botanical Resin from Fading Over Time

Because real botanicals are organic materials, completely stopping gradual aging is impossible. However, proper finishing and storage will preserve their vivid charm for years.

Finish with a UV-Resistant Top Coat

Ultraviolet radiation is the primary enemy of botanical pigments. Applying a UV-filtering top coat resin or specialized sealant over your finished work dramatically slows down sun-induced fading. Look for craft sealants with UV-blocking additives at major online craft retailers or specialty craft stores.

Display and Storage Rules

Keep finished pieces away from direct sunlight on windowsills or under intense display spotlights. Even with UV-resistant coatings, prolonged exposure will degrade botanical colors over a few months.
Avoid hot and humid environments. Always craft with high-grade, non-yellowing resins, and display your finished work in cool, shaded spaces to maintain clarity.

Yassy's Golden Workflow for Flawless Botanical Resin

Here is my exact, personal workflow for embedding flowers without fail:

Tools & Materials

Silica gel-dried botanicals
Low-viscosity UV/LED resin (for pre-coating)
Medium- to high-viscosity UV/LED resin (for casting)
Flat craft brush
Precision tweezers
Silicone mold
Embossing heat tool (for bubble removal)
UV/LED curing lamp

Pro Tip: I always check the room humidity before starting. If it's a rainy day with humidity above 70%, dry flowers absorb moisture from the air rapidly, so my personal golden rule is to pause resin crafting until conditions dry out.

My Exact Process

Place dry blooms on a silicone sheet and gently paint low-viscosity resin all over with a flat brush. Pass a heat tool lightly overhead to pop micro-bubbles, let rest for 1 minute for deep penetration, then cure both sides completely under the lamp.
Pour a thin layer of medium-viscosity resin into the mold base and cure solid.
Add a tiny drop of resin onto the base, set the pre-coated flower in place with tweezers, and flash-cure for 5 seconds to anchor it.
Fill the mold to the brim with resin, check with a magnifying glass for any rogue bubbles, remove them, and run a complete cure cycle. Let the piece cool completely before demolding.
Apply a thin layer of UV-resistant top coat over the entire piece and give it a final cure.

Following this precise procedure yields crystal-clear, bubble-free botanical pieces with vibrant colors that stay beautiful over time.

Common Pitfalls to Avoid: Quick Checklist

Review this checklist before starting your next pour:

Using fresh or partially dry flowers (Must be 100% dry!)
Embedding preserved flowers without removing processing oils
Skipping the pre-coating stage to save time
Pouring deep resin all at once without anchoring the flower first
Curing under your lamp while micro-bubbles are still visible
Subjecting thin petals to intense heat spikes during curing
Working in high humidity on rainy days without dehumidifying

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yassy

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