DIY Concrete Pumpkin Vase: Easy Autumn Home Accessory Using a Silicone Mould

I design and make home accessories using concrete – from planters to trays – because I love the raw, modern look it brings into a space. But if you’d like to try it yourself, this DIY Concrete Pumpkin Vase is a fun and easy autumn project you can do at home. Perfect for anyone who adores the cosy fall season and everything pumpkin related, it’s a creative way to add a seasonal touch to your décor or make a thoughtful handmade gift.

DIY Concrete Pumpkin Vase: Easy Autumn Home Accessory Using a Silicone Mould

What You’ll Need

• Silicone pumpkin mould (with built-in centre core)

• Fine casting concrete or craft cement mix

• Water & digital scales

• Mixing bowl + spatula

• Gloves, dust mask, apron

• Optional: pigment or mould release

• Sandpaper (120–400 grit)

• Concrete sealer

• Small glass vase or test tube (for fresh flowers)

• Felt pads (to protect furniture)

Step-by-Step

1. Get your mould ready

Place the silicone pumpkin mould on a flat, protected surface. Because this mould has a built-in centre core, it’s ready to use straight away. If using another style of mould, you may need to insert a core and secure it. A light spritz of mould release can make demoulding easier.

Silicone Pumpkin Vase Mould

2. Mix the concrete

Measure your dry mix (usually 500–800 g for a medium mould). Add water slowly, stirring until smooth and pourable, like thick cream. Add pigment now if you’d like a coloured or marbled effect.

Concrete Mix in a Plastic Bowl

3. Pour and tap

Pour the concrete evenly into the mould, around the centre core. Gently tap the mould or run an unloaded sander against the sides to bring air bubbles to the surface.

A Silicone Mould Evenly Filled with Concrete Mix

4. Smooth the base

Level off the top with a spatula. This will be the bottom of your vase, so try to make it flat.

5. Let it set

Leave the mould undisturbed for 12–24 hours. Once the concrete feels firm and cool, peel back the silicone slowly to release your pumpkin vase. Rinse and clean the silicone mould with water and some detergent. Let it dry.

A Freshly Cast Concrete Pumpkin Vase

6. Cure and finish

Let your vase cure in a ventilated space for 3–7 days. Sand the bottom and any rough edges smooth, then apply sealer to protect the surface. Stick felt pads underneath to stop scratches.

7. Style it up

Drop in a glass bud vase or test tube if you want to use fresh flowers. For dried stems, you can style it as is.

Style Your Concrete Pumpkin Vase

Styling Ideas

• Fill with autumn foliage, berries, or dahlias.

• Keep it neutral with dried grasses and eucalyptus.

• Switch to holly and pine for Christmas.

• Tie twine around the vase for a simple gift wrap.

Tips & Tricks

• Always wear gloves and a mask when mixing concrete.

• If you spot bubbles, gently tap or vibrate the mould longer.

• Seal your vase to prevent dust and stains.

• Always use a glass insert if adding water and fresh flowers.

DIY Concrete Pumpkin Vase FAQs

1. Can I use plaster instead of concrete?

You can, but plaster is much more fragile. Concrete gives better durability and detail.

2. How long will my vase last?

If cured and sealed properly, it can last for years and be reused every autumn.

3. Do I need a sealer?

Yes, it protects the surface, stops dust, and enhances colour.

4. What if I don’t have a silicone mould?

Silicone is easiest to demould, but you could experiment with plastic or DIY moulds, just expect trickier results.

5. Can it hold water directly?

Concrete is porous, so always insert a small glass vase if you want to use fresh flowers with water.

Love this project?

If you make one, tag @BotanicalBlueprint to share your creation. For more tutorials and seasonal concrete décor inspiration, visit BotanicalBlueprint.com.