Plant Palette Basics
How designers build coherent plant communities.
A plant palette is not a shopping list. It's a small society — a structural backbone, a seasonal middle, a textural understory, and a few specimens that hold the whole composition together.
When designers talk about a 'palette,' they mean something closer to a chord progression than a list. Each plant has a role, and the roles only work because the other roles are also filled.
The backbone — usually 5 to 15% of the plant count — is the evergreen structure that holds the garden together in February when nothing else is doing much. Boxwood, yew, mahonia, conifers in larger gardens.
The seasonal middle — 50 to 70% of the count — is the working layer. Perennials and small shrubs that come and go through the year, providing successive bloom, foliage interest, and habitat. This is where most of your visual energy comes from.
The textural understory — 15 to 25% — is the layer most beginners forget. Sedges, grasses, low groundcovers, and ferns that knit everything together at ankle height and suppress weeds without looking like they're trying.
Specimens — 1 to 5% of the count, often just one or two plants — are the moments of arrest. A multi-stem stewartia, an espalier apple, a single Japanese maple in the right corner. They earn their loneliness.