Why grasses suit a small urban courtyard

Urban courtyards are often compact, sheltered on some sides and wind-whipped on others. They can be hot in summer, dry under overhanging eaves, and tricky to plant generously. Ornamental grasses are made for these conditions. They bring movement and texture without demanding a lot of space, and many cope with wind and need little watering once established. Unlike a shrub that might outgrow its spot in a season or two, a well-chosen grass stays polite for years. You get rustling stems, seed heads that catch the low sun, and a gentle rhythm that softens hard paving and brick walls.

Compact grasses for pots and tight borders

In a courtyard, every plant has to earn its keep. These grasses stay small, clump politely, and look good for months.

• Festuca glauca 'Elijah Blue' – a neat mound of steely blue foliage, around 20–25cm tall. It is evergreen, drought-tolerant, and shrugs off wind. Perfect for a gravel-topped pot or the front of a border.
• Hakonechloa macra 'Aureola' – golden Japanese forest grass. It spills gracefully over pot edges and thrives in shade. It needs a little moisture, so it suits a courtyard that stays cool and damp rather than a sun-baked corner.
• Briza media – quaking grass. Native to British meadows, it forms a tidy clump with delicate, trembling seed heads in summer. It self-seeds gently and loves well-drained soil. Around 40cm tall.
• Sesleria autumnalis – autumn moor grass. Evergreen, compact, and tolerant of dry shade and wind. Its fresh green leaves and silvery seed heads light up a north-facing courtyard.

For a single statement pot, try Stipa tenuissima (Mexican feather grass). Its fine, blonde threads move with the slightest breeze. It is drought-tolerant and happy in a sunny, sheltered spot, but it can seed about, so keep it in a pot if you want to stay tidy.

Wind-beating choices for exposed corners

Courtyards can funnel wind like a chimney. Grasses that sway and bend are less likely to snap than stiff shrubs. Look for tough, flexible species.

• Deschampsia cespitosa 'Goldtau' – tufted hairgrass. This British native forms a dense tussock of dark green leaves, with airy, golden flower spikes in summer. It tolerates wind, wet, and even some drought once established. Around 60cm.
• Festuca mairei – Atlas fescue. Larger than blue fescue but still compact, with arching evergreen leaves. It is robust and wind-resistant, reaching about 60cm.
• Molinia caerulea subsp. arundinacea 'Transparent' – purple moor-grass. Despite its damp-loving reputation, this cultivar copes with average soil and looks stunning in wind. It grows to 1.2m, so give it a corner where its see-through flower spikes can be admired.

In a really exposed spot, plant in groups. A cluster of three or five grasses buffers the wind for each other and looks more natural than a single specimen.

Low-water grasses for sunny, sheltered spots

If your courtyard bakes against a south-facing wall, choose grasses that hail from dry, rocky places. They will need little watering after the first year.

• Stipa tenuissima – as above, but it deserves repeating. It thrives on neglect and looks brilliant in a gravel garden or a tall pot.
• Festuca glauca – blue fescue. Water only when the top few centimetres of compost are dry. Overwatering kills more of these than drought.
• Helictotrichon sempervirens – blue oat grass. Evergreen, arching, and steel-blue. It reaches 60–90cm and is superb for a hot, dry border. It needs sharp drainage.
• Imperata cylindrica 'Rubra' – Japanese blood grass. Green at the base, blood-red at the tips. It is compact (around 40cm) and slowly spreads. It prefers moist soil but tolerates short dry spells. Best in a pot to control its spread.

For containers, mix a loam-based compost with 30% horticultural grit. This gives the sharp drainage these grasses crave. Water deeply but infrequently – once a week in hot weather, less if it rains.

Care in containers: simple rules for tight spaces

Small courtyards often mean growing in pots. Grasses in containers need a little more attention than those in the ground, but not much.

• Spring cut-back: For evergreen grasses, simply comb out dead leaves with your fingers or a small rake. For deciduous types, cut back to 10–15cm above the compost in late February or early March, just as new growth starts.
• Divide every few years: When the centre of the clump dies out, lift the pot in spring and split the grass with a bread knife or two forks. Replant the vigorous outer pieces.
• Winter drainage: Stand pots on feet or bricks so excess water drains away. Most grasses hate winter wet far more than cold.
• Feed sparingly: A handful of slow-release fertiliser in spring is plenty. Too much food makes soft, floppy growth that snaps in wind.

Native grasses for wildlife and seasonal interest

British native grasses bring extra value to a courtyard. Their seed heads feed birds, and their dense tussocks shelter overwintering insects.

Deschampsia cespitosa and Briza media are both native and compact. Festuca ovina (sheep's fescue) makes a fine, tight evergreen mound – ideal for a low-maintenance pot. Anthoxanthum odoratum (sweet vernal grass) is small, fragrant, and charming in a mixed container. These grasses look after themselves, needing no watering once established, and they knit beautifully with British wildflowers such as yarrow or scabious.

In a small courtyard, the key is to choose grasses that match your conditions. Windy and exposed? Go for Deschampsia, Festuca mairei, and Molinia. Hot and dry? Stipa, Helictotrichon, and blue fescue. Shady and damp? Hakonechloa and Carex. Plant a few in pots, a few in the ground, and let them move. You will be surprised how much life a handful of grasses brings to even the tightest urban space.