The Pencil Pine (Cupressus sempervirens 'Glauca'): Elegant Vertical Form

The Pencil Pine (Cupressus sempervirens 'Glauca'), also called Italian Cypress, is an evergreen conifer native to the Mediterranean. It is one of the few trees that delivers true vertical structure in a narrow footprint, holding tight columnar form for decades.

About Pencil Pines

The species belongs to the Cupressaceae family. The botanical name combines Latin words for living forever and blue, a reference to the long lifespan and the distinctive foliage colour. Mature trees reach up to 15m in cultivation, with a width of around 1m.

Common Name: Pencil Pine, Italian Cypress
Mature Height: Up to 15m
Mature Width: Approximately 1m
Foliage: Deep green to blue-grey scale-like leaves
Form: Tight narrow columnar
Growth Rate: Moderate, slows with age

Where Pencil Pines Come From

Native to the islands of Sicily and Sardinia in Italy, Pencil Pines are now planted in gardens across Australia, southern Europe, the United States and the Middle East. The species is a classical signature of Mediterranean and Tuscan landscapes, and translates equally well to contemporary Australian design.

Recommended Tree

Planting Your Pencil Pine

Pencil Pines thrive when planted with care:

• Select a position in full sun. Pencil Pines tolerate part shade but lose density.
• Ensure the soil is well-drained. Improve heavy clay with organic matter or grit.
• Allow space for the mature height (up to 15m) and width (around 1m).
• Dig the hole twice as wide as the rootball and at the same depth.
• Tease out any circling roots from the rootball to encourage outward growth.
• Backfill with native soil and water in deeply to settle.
• Mulch with coarse bark, keeping mulch clear of the trunk.
• Stake young trees in windy positions for the first 12 months only.

Caring for Your Pencil Pine

Once established, a Pencil Pine requires minimal maintenance:

• Prune once per year to maintain shape and encourage dense foliage.
• Water regularly during dry spells through the first two summers.
• Mulch around the base to conserve soil moisture.
• Apply a slow-release fertiliser in spring or early summer.

The species is highly adaptable. It tolerates most soils provided drainage is adequate, and handles drought and frost once established. The rigid columnar form makes it ideal for clipped formal hedging or as a vertical accent.

Design Role

Pencil Pines are unmatched for vertical accents in narrow spaces. Use them as avenue plantings flanking driveways, as exclamation points punctuating a Mediterranean border, or as clipped formal hedging where slim columnar structure is required.