Decomposed granite walkway running alongside a timber retaining wall
Why walls matter

Walls give the garden a structure to live around.

A planted bed without a wall is just an outline. A wall — even an 18-inch seat wall — gives the planting an edge, the path a destination, and the patio a perimeter. Good garden walls hold the geometry of the landscape together long after the planting has filled in.

Wall types

Three roles a garden wall plays.

Garden feature wall with boulders and specimen succulent planting

Seat walls

Patio perimeter and informal seating in one — usually 18–20 inches tall and capped in stone or wood.

Terraced planting beds with container plants and gravel paths

Planter walls

Raised beds with a face — for herb gardens, ornamental planting, or screening the property line.

Drought-tolerant agave, aloe, and succulent planting set over rock mulch

Low retaining

Terracing a gentle slope into plantable shelves — short enough to skip the deep engineering, tall enough to organize the grade.

Adding walls to the garden?

Let's talk about heights, materials, and how the planting will sit against them.