Bracteate Cotula - Leptinella squalida

Leptinella squalida, also known as Cotula squalida or Bracteate Cotula, is an easy-to-grow bush and the most commonly planted leptinella in gardens. This small perennial plant forms a lovely little bush, with a feathery appearance, composed of tiny fern-like leaves that turn bronze to violet in cold weather. It is an excellent ground cover for partially shaded rockeries or gaps in paving where it thrives. Its foliage generally remains evergreen in winter, and it grows well in well-drained soil that remains moist.

The Leptinella squalida belongs to the Asteraceae family. It is native to the plains and subalpine meadows of New Zealand. This plant quickly forms a low, dense, and feathery carpet. Its mature size will not exceed 5 cm (2in) in height, 15 cm (6in) in flower, with a spread of 30 cm (12in) or more. The foliage, which remains evergreen during our not overly cold winters, consists of 4 cm (2in) long, deeply pinnate and divided leaves, resembling those of yarrow. They are arranged in basal rosettes and change colour in response to cold weather, evolving from light green to dark green in summer, and taking on bronze or violet hues in autumn and winter. The rather inconspicuous flowering occurs in June-July, in the form of small rounded heads, about 5-6mm (1in) in diameter, with a yellowish-green colour. It is followed by decorative fruits resembling small brown pellets. The plant constantly spreads through suckers created by its running stems.

Cotulas are fairly hardy alpine plants, with this Leptinella squalida tolerating temperatures as low as -15°C, and they are tolerant of footfall, provided it is not intense. Similar to Roman Chamomile, Cotula squalida can be used as a substitute for grass on small areas. In the garden, you can pair it with other easy-to-grow small plants, such as Creeping Bugleweed (Ajuga reptans Atropurpurea) and Japanese Painted Fern (Athyrium Niponicum Pictum) for a fascinating effect. Azorella trifurcata is in the same vein but more drought-resistant. Fascinating Raoulia australis also thrives under similar conditions in nature but requires freshness and is even more demanding when it comes to winter humidity. This cotula can be easily planted at the base of bushes or in large pots that are regularly watered, where it will thrive.