What Is an Arbor? Arbor vs. Pergola vs. Trellis Explained

An arbor is a freestanding garden structure, usually with two sides and an arched or flat top, that frames a walkway, entrance, or bench. Arbors are smaller than pergolas and are designed to be walked through rather than sat under. Many have lattice sides for climbing plants, which is why arbors, trellises, and pergolas often get confused.

This guide explains what an arbor is, how it compares to a pergola and a trellis, and how to choose the right size and style for your yard.

What Is an Arbor Used For?

• Framing an entrance: marking the start of a garden path, a side yard, or a gate.
• Supporting climbing plants: roses, clematis, and other vines grow up the sides and over the top.
• Creating a focal point: drawing the eye to a specific spot in the garden.
• Weddings and events: an arbor makes a natural backdrop for ceremonies and photos.
• Sheltering a bench: some arbors are deep enough to hold a small seat inside.

Common Arbor Styles

Arched Arbors

A curved top gives a soft, traditional cottage-garden look.

Pagoda Arbors

A pagoda arbor has a stepped or upturned top inspired by Asian architecture. The Cedar Pagoda Garden Arbor – 6 ft has a 54-inch-wide, 82-inch-tall walk-through opening, with lattice sides ready for climbing plants.

Flat-Top Arbors

Straight crossbeams suit modern and craftsman-style homes.

Arbors With Planters or Benches

Some arbors come with built-in planters at the base, so vines have a place to root even on a patio. The Cedar Pagoda Garden Arbor with Planter Boxes pairs the arbor with two cedar planters.

Wedding Arbors

Wedding arbors are wider so a couple and officiant can stand underneath. The Cedar Pagoda Wedding Arbor – 8 ft has an 80-inch-wide opening.

Arbor vs. Pergola

The simplest way to tell them apart: you walk through an arbor and sit under a pergola.

• Size: arbors are usually a few feet deep. Pergolas cover a whole patio or seating area.
• Structure: arbors typically have two sides. Pergolas have four or more posts with beams and open rafters across the top.
• Purpose: arbors frame a path or entrance. Pergolas create an outdoor room with partial shade.
• Installation: arbors are lighter and simpler. Pergolas usually need footings or anchors and more planning.

Want the full picture on pergolas? Read what a pergola is and how a pergola differs from a gazebo. If you want seating underneath, the Cedar Pergola Kit with Lattice Sides sits between the two: a compact pergola sized for a porch swing.

Arbor vs. Trellis

A trellis is a flat framework, usually a single panel of lattice, that supports climbing plants against a wall, fence, or stake. An arbor is a three-dimensional structure you can walk through, and it often includes trellis panels on its sides.

Use a trellis when you want vertical growing or privacy in a narrow space. Use an arbor when you want an entrance or focal point. See our trellis ideas for ways to use panels around the yard.

Arbor vs. Pergola vs. Trellis: Quick Comparison

How to Choose an Arbor

1. Measure the path. Choose an opening wide enough for people, wheelbarrows, or mowers to pass through.
2. Check the height. A walk-through opening around 80 inches tall clears most adults even after vines hang down.
3. Pick a material. Western red cedar resists rot and insects naturally and is safe around edible plants.
4. Plan your plants. Light vines like clematis suit most arbors. Heavy, woody vines like wisteria need a much sturdier structure.
5. Anchor it. Once covered in plants, an arbor catches wind like a sail. Secure the base according to the manufacturer's instructions.

Arbor Ideas to Try

• Place an arbor at the start of a garden path to make the yard feel larger.
• Frame a garden bench to create a reading nook.
• Pair an arbor with a garden bridge for a classic Japanese-garden look.
• Run trellis panels off each side to create a gateway without a fence.
• Use a wide arbor as a permanent ceremony spot for backyard weddings and vow renewals.

Browse all garden arbors to compare sizes and styles.

Arbor FAQs

What is the difference between an arbor and a pergola?

An arbor is a small walk-through structure that frames a path or entrance. A pergola is larger, with posts, beams, and open rafters that cover a seating area.

What is the difference between an arbor and a trellis?

A trellis is a flat panel for climbing plants. An arbor is a freestanding structure you can walk through, and it often has trellis panels on its sides.

How tall should a garden arbor be?

An opening of about 80 inches or more gives most adults comfortable clearance, even once vines start to hang from the top.

What plants grow best on an arbor?

Clematis, climbing roses, honeysuckle, and annual vines like morning glory are popular. Save heavy vines like wisteria for very sturdy structures.

Does an arbor need to be anchored?

Yes. An arbor covered in plants can catch a lot of wind, so secure it according to the manufacturer's instructions.