Formal garden ideas

Symmetry, repetition and clipped green architecture. The most demanding style to maintain, and the only one that looks finished in January.

AI-generated concept image

Light: Partial shade
Water: Moderate
Upkeep: High
Color: Green-focused
Planting survives: −4 °F / −20 °C

Getting it right

Set the axis first, usually from the main window or the door, and build everything symmetrically off that line. Use one hedge plant throughout, because mixing boxwood and yew halves the effect. Be honest about upkeep before committing: boxwood wants clipping once or twice a year, boxwood blight is now common in the eastern US, and box tree moth has reached parts of the Northeast and Midwest, so in a new garden yew or a blight-resistant boxwood is the safer choice. Keep the planting inside the geometry deliberately plain.

How to plan it

Start from the main view, usually the back door, a window or the front walk, and run the central axis straight out from it. Mirror the beds and paths on either side of that line, and end the axis with something worth looking at: a bench, an urn, a fountain or a single tree.

Divide the space into compartments with hedges, typically 12 to 24 inches (30–60 cm) tall for low edging and 4 to 6 feet (1.2–1.8 m) for walls between areas. Fill the compartments with gravel, lawn or one plant in quantity, such as lavender or catmint, which keeps the geometry readable.

Plant edging hedges 12 to 18 inches (30–45 cm) apart and taller hedges about 2 feet (60 cm) apart, and trim lightly and often for the first few years so they thicken from the base. A formal garden only works when it's kept sharp, so plan for clipping once or twice a year, every year.

Plants that work

Botanical names come first so you can order the right plant anywhere. Heights are for mature plants in the ground.
Plant	Type	Light	Water	Height	Hardy to
Common boxwoodBuxus sempervirens	Shrub · Evergreen	Partial shade	Moderate	1–10 ft (0.3–3 m)	−4 °F / −20 °C
English yewTaxus baccata	Conifer · Evergreen	Partial shade	Moderate	2–16 ft (0.5–5 m)	−4 °F / −20 °C
European hornbeamCarpinus betulus	Tree · Deciduous	Partial shade	Moderate	5–49 ft (1.5–15 m)	−22 °F / −30 °C
European beechFagus sylvatica	Tree · Deciduous	Partial shade	Moderate	5–82 ft (1.5–25 m)	−22 °F / −30 °C
Shrub roseRosa (shrub cultivars)	Shrub · Deciduous	Full sun	Moderate	3–6 ft (0.8–1.8 m)	−13 °F / −25 °C
English lavenderLavandula angustifolia	Shrub · Evergreen	Full sun	Low	16–28 in (40–70 cm)	−4 °F / −20 °C
Lady's mantleAlchemilla mollis	Perennial · Deciduous	Partial shade	Moderate	12–18 in (30–45 cm)	−22 °F / −30 °C
CatmintNepeta × faassenii	Perennial · Deciduous	Full sun	Low	12–24 in (30–60 cm)	−22 °F / −30 °C
Meadow sageSalvia nemorosa	Perennial · Deciduous	Full sun	Low	16–28 in (40–70 cm)	−22 °F / −30 °C
DelphiniumDelphinium elatum	Perennial · Deciduous	Full sun	Moderate	4–7 ft (1.2–2 m)	−22 °F / −30 °C
Smooth hydrangeaHydrangea arborescens 'Annabelle'	Shrub · Deciduous	Partial shade	High	4–5 ft (1.2–1.5 m)	−22 °F / −30 °C
Chinese wisteriaWisteria sinensisInvasive in parts of the US. Check your state's list.	Climber · Deciduous	Full sun	Moderate	20–39 ft (6–12 m)	−13 °F / −25 °C

Surfaces and materials

Sandstone pavers
Granite cobbles
Brick wall
Formal water channel
Glazed pots
Lawn
Uplighting
Steel pergola

Works well when

It has to look good in winter
The yard is flat and featureless
Curb appeal and resale matter
You enjoy hands-on gardening
You want more privacy

Think twice when

The budget is tight
You want low maintenance
The ground slopes steeply

Common questions

What's the best hedge for a formal garden?

Yew is the classic for tall hedges and topiary because it regrows from old wood. For low edging, boxwood is traditional; where boxwood blight is a problem, look at blight-resistant boxwood cultivars or Japanese holly.

Is a formal garden expensive?

More than most styles up front, because hedges are bought in quantity and paths and edges need to be precise. Over the long run the main cost is clipping, whether that's your time or a crew's.

Can a formal garden be small?

Yes. A small symmetrical courtyard with four hedged beds and a central pot is fully formal. Keep the materials few and the lines exact.

Is Chinese wisteria a good choice for a formal pergola?

It's the classic, but Chinese wisteria is invasive in much of the eastern and southern US. American wisteria gives a similar effect, is native, and is far easier to keep in check.