Arch vs Arbor vs Trellis: Choosing the Right Giant Flower Frame

Key Takeaways
A wedding arch has a curved top and is typically freestanding — it's designed to frame a couple or a focal point with that iconic sweeping shape. An arbor is more like a small garden structure with posts and a flat or pitched roof, creating more of a doorway or canopy effect.
Both are walkthrough structures, but the arch is more dramatic and photogenic from the front, while the arbor creates a more immersive "entering a space" experience. For giant flower installations, arches are easier to decorate; arbors require more flowers but offer that stunning canopy option.
For a standard 8-foot arch, plan on 10–15 giant flowers for good coverage. Mix sizes — a few large 4-foot statement flowers at the top and sides, filled in with 2–3 foot blooms. If you want a fully lush, no-gaps look, go closer to 15–20 flowers.
Our Bundle Kits (8–12 flowers) are designed to give you a solid foundation for an arch. Many customers order one bundle kit plus 3–5 individual kits to complete the look.
Yes — EVA foam is weather-resistant and holds up well outdoors. It won't wilt, brown, or lose petals in heat or humidity the way fresh flowers do. That said, direct prolonged sun exposure over many hours can cause slight color fading over time.
For outdoor events, make sure your frame is properly weighted and secured. Wind is the bigger concern than weather — giant flowers have significant surface area and can act like sails in a strong breeze. Weight your bases and stake your frames whenever possible.
Is a trellis strong enough to hold giant foam flowers?
Yes, absolutely. EVA foam flowers are surprisingly lightweight — even a 4-foot flower typically weighs under 2 pounds. A standard wire grid trellis panel can easily support 10–15 giant flowers without any structural issues.
The key is using proper attachment — zip ties through the grid openings rather than just resting flowers against the trellis. For wall-mounted trellises, make sure your wall anchors are rated for the combined weight of the trellis and all flowers.
The trellis wins for portability — panels are flat, lightweight, and quick to assemble. A PVC arch is a close second; the pipes break down into manageable lengths and the whole frame can fit in a standard SUV.
Arbors are the most challenging to transport solo because of their size and weight. If you're doing multiple events or working alone, I'd lean toward an arch or trellis system for practicality.
Absolutely — and a lot of our customers do. PVC pipe arches are a popular DIY project that can be built for under $50 in materials. There are great tutorials on YouTube for PVC arch frames in various sizes. For arbors, basic woodworking skills and a weekend afternoon are usually all you need.
What I always tell people: invest in the flowers, not necessarily the frame. A simple DIY PVC arch covered in stunning giant EVA foam flowers looks just as impressive in photos as a $400 metal frame. The flowers are the stars of the show.
For trellises, simple wooden lattice panels from any home improvement store work beautifully. Lean two panels together in a V-shape for a freestanding backdrop, or zip-tie them to a fence or wall for extra stability. You really don't need to overthink the frame.
Which Frame Is Right for You? A Quick Summary
Still not sure which direction to go? Here's a simple way to think about it.
- Choose an arch if you want maximum drama, a clear focal point, and a frame that photographs beautifully from straight on. It's the most versatile option for ceremonies, backdrops, and photo ops.
- Choose an arbor if you want guests to walk through your display and feel immersed in the florals. It's stunning for ceremony entrances and garden-style events — just plan for more flowers to fill that canopy.
- Choose a trellis if you need a flat backdrop, you're working with a tight space, or you want something easy to transport and set up solo. It's also the most budget-friendly frame option.
And remember — whatever frame you choose, the base or stand is not included with our DIY kits. Bases are sold separately, so factor that into your planning early so you're not scrambling the week of your event.
Frequently Asked Questions
What is the difference between a giant flower arch vs arbor vs trellis?
An arch has a curved or rounded top and is freestanding, designed to frame a focal point from the front. An arbor is more of a small structure with posts and a flat or pitched roof, creating a walkthrough canopy effect. A trellis is a flat grid or lattice panel used as a backdrop or wall display.
For giant flower installations, all three work beautifully — the right choice depends on your space, how many flowers you have, and the overall vibe you're going for. Arches are the most popular for weddings and quinceañeras; trellises are the go-to for photo booths and smaller venues.
How many giant flowers do I need to decorate an arch?
For a standard 8-foot arch, plan on 10–15 giant flowers for solid coverage with a natural, airy look. If you want a lush, no-gaps display, aim for 15–20 flowers. Mix sizes — larger statement flowers at the top and sides, smaller blooms to fill in the gaps.
Our Bundle Kits are a great starting point, and many customers add a few individual kits to complete the look. When in doubt, order a couple extra — leftover flowers are never a bad thing and can be reused for future events.
Can I use giant EVA foam flowers outdoors?
Yes! EVA foam is weather-resistant and holds up well in heat and humidity — it won't wilt or lose petals the way fresh flowers do. Prolonged direct sun over many hours can cause slight color fading over time, but for a one-day event you have nothing to worry about.
Wind is your bigger concern outdoors. Giant flowers have a large surface area and can catch a breeze like a sail, so always weight your bases and stake your frame into the ground when possible. A little prep goes a long way.
Do I need special tools to make giant EVA foam flowers?
You'll need a shaping tool to curl and shape your petals — a heat gun, iron, flat grill, or hair styler all work great for this. For gluing, we use 369 glue or a hot glue gun with silicone sticks, both sold separately in our shop.
Our DIY kits include everything else you need to build your flowers — the pre-cut EVA foam petals, templates, and instructions. The shaping and gluing tools are the only things you'll need to source on your own, and most crafters already have at least one of them on hand.
Whatever frame you choose and however many flowers you make, I hope this guide takes some of the guesswork out of your planning. You've got a beautiful event ahead of you, and I'm so glad Amazing Giant Flowers gets to be a small part of it. If you ever have questions while you're building or planning, don't hesitate to reach out — I love hearing from you and I'm always happy to help you figure out the perfect setup for your space. Happy crafting! 🌸
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Written by
Adriana WellsFounder & CEO of Amazing Giant Flowers
Adriana Wells is the founder and creative force behind Amazing Giant Flowers, a Texas-based company specializing in handcrafted giant foam flowers, luxury floral installations, and DIY flower-making supplies.
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