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A Coastal Seashell Christmas Tree

Seashell Christmas tree decorations with framed coastal artwork on wall.

A seashell Christmas tree is a beautiful way to bring coastal style to your holiday decor. Coastal decor can feel very overdone, very quickly at retailers, but this DIY decor project brings in a coastal touch that isn’t overly themed. It works naturally with a softer coastal style and layers easily with the rest of your Christmas pieces, whatever style they may be. These seashell trees feels polished, distinctive, and right at home in a space that already leans classic and coastal during the holiday season.

A Polished Coastal Christmas Tree

This seashell tree is a beautiful detail to mix with stronger Christmas decor during the holiday season. It layers easily with existing greenery, decorative objects and any color scheme. It makes it easy to add a classic coastal touch to any space. This project easy to make in an afternoon with simple supplies. It’s fun to watch it come together and t he finished result is an affordable DIY decor project that looks store bought.

Seashell holiday centerpiece with starfish and coastal decor on glass cake stand.

What You’ll Need

Materials

  • Foam cones
  • Assortment of large to small shells
  • Small sea stars
  • Any additional accents – I used pearl beads

Tools

  • Hot glue gun and glue sticks

Before You Start

Start by setting everything out on a counter or table before you begin so all supplies are within easy reach. Separate and sort shells by size, Any accent pieces, like the sea stars can be set aside until the end. Shell mixes from a craft store often have chipped shells, remove these and discard as you do not want anything awkwardly shaped or broken on your trees.

How to Make a Seashell Christmas Tree

Step 1: Place the larger shells

Working from the base of the cone upward, place a few of the larger shells around the cone so you can see how the spacing will look before anything is attached.

Step 2: Glue on the larger shells

Once the spacing feels balanced, begin gluing those shells on from the bottom up, turning the cone as you go so the shape stays even from every angle. You will have to experiment with how much hot glue to use. A small dot may not be enough to hold the shell in place, but too much doesn’t dry quickly enough.

A beach-themed decorative arrangement with seashells and pearls for coastal interior decor.

Step 3: Fill in with the smaller shells

Fill the open spaces as you move up the come with the smaller shells, working around the tree until the surface feels complete and the cone is mostly covered. If you want a distinct pattern or rows of shells on your cone, alternative the types and sizes of shells you use as you move up the cone.

Step 4: Add the finishing details

Add your sea start toppers and any additional accents at the end. I attached the sea tars to a larger shell at the top of each cone for stability. I also added pearly beads as a classic accent to help cover any visible cone behind the shells.

A white seashell and starfish wall decor with pearl accents and coastal theme.

Styling Your Seashell Christmas Tree

These trees work well on a shelf, tray, console, kitchen counter, or dresser, and they can also be grouped in different heights for a fuller arrangement. Because the texture is fairly neutral, they layer naturally with other Christmas pieces, including those with bold designs, bright colors, or more iconic shapes. These are versatile pieces that can be used in many spaces during the holiday season.

Tips and Variations

The final look can shift depending on the shell mix and cone size you choose. A taller cone gives the tree more presence, while a smaller one tucks easily into a tabletop arrangement or tray. Shells in white, ivory, and sand tones keep the look soft, while a little color can change the mood without taking away from the overall shape. The most successful version is usually the one that stays edited and lets the materials carry the design. 

Beach-themed shell and starfish decorative sculptures for coastal interior decor.

A Custom Coastal Holiday Piece

A seashell Christmas tree is an easy way to bring a coastal detail into Christmas decor without making the room feel overly themed. It works beautifully with subtle coastal style, layers easily with stronger holiday pieces, and comes together from simple materials in a way that feels approachable from start to finish. The result is a seasonal project with a finished look that feels thoughtful, distinctive, and easy to bring out year after year.

More Christmas Decor Projects

Easy Colorful Christmas Ornament Tree

A Colorful Christmas Ornament Wreath

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