DIY family costume, garden theme: dad in Miracle-Gro plant food shirt, three kids as giant paper flowers, two toddlers as garden gnomes, and mom dressed as a gardener with a trowel.

DIY Family Costume for Big Families: Garden Theme

Every year we go all-in on a DIY family costume – and this time our big crew did a colorful garden theme that’s no-sew, budget-friendly, and kid-proof. As we add more kids, choosing a DIY costume gets more interesting in the best way. This year, our large family went with a garden theme. Every part of our family costume was DIY, no sewing required, super budget-friendly, and easy to pull together at the last minute. Think colorful, comfy, and kid-proof.

Garden-themed Halloween for big families: bright flower headpieces with pot skirts, toddler gnome hats and beards, dad in fertilizer T-shirt, and mom gardener in overalls.

DIY Tutorials in This Theme

Garden Gnome Costumes for the Boys (DIY)

The boys made the cutest little garden gnomes. I whipped up the hats and beards quickly with simple materials like craft foam and faux fur, then dressed them in matching brown overalls and long-sleeve tees. This DIY costume was fast, comfy, and perfect for toddlers and babies, but could easily be upscaled to any size. Just saying, a whole family costume of DIY garden gnomes would be adorable!

Perfect for family Halloween costume ideas or themed class parties. For the full step-by-step on the hat and beard, see How to Make a Garden Gnome Costume for Kids.

Giant Flower Costumes for the Girls (No-Sew)

We started with a big pack of multi-colored cardstock, then let the girls’ imaginations take over when it came to the flower headpieces. They loved helping with every step of these DIY costumes. They chose the colors, designed the petal layers, helped cut everything, and assembled their blooms. We added a basic green outfit for the “stems” and finished with a DIY flower pot skirt.

Get all the details in No-Sew Flower Costume – Easy Kids DIY.

Three kids in DIY no-sew flower costumes: red, blue-purple, and yellow sunflower petal headpieces with green “stem” outfits and cardboard flower-pot skirts.
Child in a DIY flower costume with layered red and pink petal headpiece and green stem outfit

Dad’s Fertilizer Shirt (DIY “Plant Food” Costume)

My husband Stuart’s costume might be the easiest one to wear out of the whole family’s DIY costumes, because it is literally just a basic black t-shirt. I made the “bag of fertilizer” design with craft foam and my trusty hot glue gun. No Cricut or fancy cutter needed. Bonus idea: his fertilizer shirt with my gardener outfit makes a cute couples costume on its own.

See how to make it here DIY Halloween Costume T-Shirt Without Using a Cricut.

DIY couples costume from a garden theme: woman dressed as a gardener in overalls and straw hat holding a trowel kisses husband wearing a Miracle Gro plant food T-shirt.

Mom’s Easy Gardener Outfit (Group Costume)

My gardener costume is the kind I love because it’s all put together with items you probably already have in your closet. Cute overalls, a neutral shirt, a sun hat, and a small hand trowel were all it took. Simple, comfy, and it ties the whole garden theme together.

Couple in garden-themed DIY Halloween costumes: woman dressed as a gardener in overalls and straw hat holding a trowel, next to man wearing a Miracle-Gro plant food T-shirt.

Shop the gardener costume pieces:

Why This DIY Family Costume Works

This garden theme is fun, colorful, and whimsical. Everyone can move easily, nothing is fussy, and the pieces are comfortable for a long night of trick-or-treating. From my oldest to my youngest, they all loved their costumes. And the best part, everything is budget-friendly and comes together fast, even if you are starting at the last minute. This garden theme family costume is fun, colorful, and whimsical.

Older sister dressed as a flower for Halloween poses with her baby brother dressed as a garden gnome with a red hat and white beard

It is a DIY family costume that scales well for big families. You could add more gnomes and flowers, or even expand into insects like butterflies and bees to keep it whimsical. You could even add some family members dressed as veggies for a funny, but still cute element. There are so many options for large families with this DIY family costume theme.

DIY family costume perfect for a large family, garden theme: dad in Miracle-Gro plant food shirt, three kids as giant paper flowers, two toddlers as garden gnomes, and mom dressed as a gardener with a trowel.
Baby in a DIY garden gnome costume—red cone hat and fluffy white beard—being held up by mom dressed as a gardener outdoors.
Child in a DIY flower costume with layered red and pink petals and a yellow center, wearing a green “stem” shirt and cardboard flower pot skirt, smiling outdoors.

More Family Halloween Costume Ideas

If you love themed family costumes, you have to check out this roundup. Everything’s posted at > 31 Family Halloween Costumes: DIY Ideas for Every Age. I have our previous Halloween costumes, plus several other family and group theme ideas.

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Pin this DIY family costume for big families, garden theme with flowers, gnomes, and a gardener, so you can grab the tutorials when you’re ready.

FAQ: DIY Family Costume Garden Theme

How do you make a DIY family costume without sewing?

Use poster board or craft foam, hot glue, and elastic. Our flower costumes, gnome hats and beards, and fertilizer T-shirt all use a hot glue gun and basic cuts.

What materials do I need for the flower costumes?

Poster board, cardstock, or foam sheets for petals, poster board and fabric for pot skirts, elastic or ribbon, hot glue, plus a green shirt and leggings. Full steps in No-Sew Flower Costume – Easy Kids DIY.

How do you make a gnome hat and beard fast?

Roll a cone from craft foam for the hat, glue the seam, then cut a beard shape from faux fur and attach elastic. See How to Make a Garden Gnome Costume for Kids.

Can I make the fertilizer costume t-shirt without a Cricut?

Yes. Cut shapes from craft foam and hot glue them to a plain black tee. Steps in DIY Halloween Costume T-Shirt Without Using a Cricut.

How much did the DIY family costume cost?

Most pieces used craft foam, poster board, cardboard, and closet basics. Expect roughly $10–$20 per person, depending on what you already own.

How long does it take to make everything for a big family?

Plan one evening for cutting and assembly. Flowers take about 45–60 minutes each, the gnome hat and beard take 20 minutes, and the fertilizer shirt takes just under an hour. Get everyone to pitch in and help!

How much does a DIY family costume cost for a big family?

Around $10–$20 per person.

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