Dichelostemma congestum

Dichelostemma congestum is a perennial bulb with a late flowering. From late May to early June, beautiful compact clusters appear. The flowers are almost round. They have a lovely lavender-blue colour, sometimes leaning towards purple. Its slender deciduous foliage tends to spread and creates a lush green carpet by the end of winter. Perfect for creating a natural space with a slightly wild look, this hardy plant prefers dry summers and will establish itself with ease and without any constraints or monitoring.

Originally from California, Dichelostemma congestum (also known as Brodaea congesta) thrives in open and sunny meadows. In our latitudes, it shows hardiness and prefers well-drained soils, but can also tolerate slightly clayey soils. Its only requirement is relatively dry summers to prevent the bulb from suffering from excessive moisture.

The flowers are perched on tall and slender bare stems that can reach 50 to 70cm (20 to 28in) in height. They are grouped in almost spherical clusters measuring 3 to 5cm (1 to 2in) in diameter. Each flower measures 1 to 2cm (1in) in length and has six beautiful pearly petals ranging in colour from lavender-blue to purple. In the centre, yellow stamens show their heads and complete this spring tableau. Dichelostemma congestum remains green for a long period. Its deciduous growth lasts from January to mid-June. It consists of long ribbon-like leaves measuring 30 to 40cm (12 to 16in) in length, generously covering the base and forming a beautiful languid tuft.

Following spring bulbs, Dichelostemma congestum is the ideal partner for a small countryside bed already colonised by grasses or late tulips. The numerous ornamental garlic cultivars are ideal companions to vary the shapes and colours of the pompoms. Its foliage will be welcome in planters and containers to accompany crocuses, daffodils, and grape hyacinths, and its flowering will extend the colour display around the house. Thus, floral compositions can last from February to June.