Ornamental Grasses – A Great Addition For Any Garden
In any professionally designed planting plan, Ornamental Grasses offer a versatile and enchanting addition, providing a range of functions from texture and movement to screening or front-of-border ground cover to year-round interest. On top of all of this, they are also generally very low maintenance to look after.
Ornamental Grasses
Most Ornamental Grasses are clump-forming, so non-invasive, need little feeding, are drought-tolerant, which is proving important in the UK’s changing climate and simply require a hard cut back in late winter or early spring.
Planting Options
There are various options available across Deciduous or Evergreen, heights from very tall to low border edging, from mainly sun lovers but also some shade tolerant varieties. They also work in a number of planting situations and designs, from Mediterranean-style gravel or coastal gardens, to complementing herbaceous mixes in a dynamic contrast, or providing stunning focal points or screening. They work in low-maintenance schemes or as a contrast to formal topiary in an evergreen setting.
A key outstanding attribute is the year-round interest they provide. From the wispy movement and colour in summer and autumn to the seed heads and structure in winter glistening with frost.
We will look at a small selection across the categories in this blog, which provide for a selection of uses:
Stipa Tenuissima
Stipa Tenuissima is a favourite within garden designs, with its floating movement in a light breeze. It’s not a large grass, to 60cm in height, and works well in drifts at the front or middle sunny borders, combining with perennials such as Sedum, Echinacea, Salvia and Nepeta for example, in a naturalistic style of planting.
Minimal care needed, with perhaps a light pruning or combing of any damaged leaves.
Festuca glauca
Festuca glauca comes in a number of cultivars including Elijah Blue. It is an evergreen species ideal for the front of borders, growing to only 30cm in spread and height. Due to their size, they also work well in pots and containers. They enjoy full sun but will tolerate some partial shade. It provides year-round interest and colour and a neat mounded appearance which works well alongside silvers, purples and also yellows.
Hakanechloa macra ‘Aureola’
Hakanechloa macra ‘Aureola’ is a slightly different option, though still a smaller, shorter grass. This will thrive in partial and dappled shade and a moister setting. Commonly known as Japanese Forest Grass, they have a domed, arching foliage with stunning golden yellow foliage and a bright green stripe, which means it stands out in slightly darker corners of the garden. Works well as a container plant as well, with the foliage cascading over the edges. These are deciduous and should be cut back hard in early spring as new growth starts to emerge.
Calamagrostis ‘Karl Foerster’
Calamagrostis ‘Karl Foerster’ is a much taller cultivar, growing to 1.8m in height and is often seen gracing show gardens. It works very well alongside herbaceous perennials, either in drifts or as focal points and can act as a great screening option and help provide that perception of rooms with a garden. They work well in narrow gardens when you are trying to break up the sight line down the garden to combat the long and narrow perspective. In June, it sends up slender oat-like flowers which take on a burnt golden colour in July. They retain their structure in winter so they provide both interest and screening in winter, looking spectacular covered in frost. They are a deciduous plant which needs cutting back to ground level in late winter, and apply a layer of mulch to retain moisture and suppress weeds.
Panicum virgatum ‘Shenandoah’
Panicum virgatum ‘Shenandoah’ is a plant best recognised for its amazing autumn colour. Through summer, the foliage is an attractive blue-green, but takes on a deep red from late August, which intensifies through September and into October. This cultivar grows to around 1.2m in height with a 60cm spread, and works well in a naturalistic prairie style planting scheme with Echinacea, Verbena and Rudbeckia, for example. It has airy flower panicles that catch the light in summer above upright, arching leaves. This is another deciduous variety, so simply remove spent stems in early spring to encourage new growth. The flowers can be cut back post-flowering or left for wildlife interest over winter.
Molinia caerulea ‘Transparent’
Molinia caerulea ‘Transparent’ or Purple Moorgrass, is ideal for weaving into a mixed or herbaceous bed where the purple, feathery spikelets will create gentle movement as they catch every breeze, with the darker green foliage popping out of a border alongside other colourful plants. This deciduous cultivar will add interest well into winter. Growing to 1.8-2m, it provides structural height to the garden. Looks wonderful in late afternoon sun in late summer and early autumn.
Ornamental Favourites
This is just a snapshot of the ornamental grasses available, but these are some of my favourite options. For minimal maintenance, grasses provide pretty much year-round interest and tie beds and borders together whilst being focal points themselves, providing drifts of movement.
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