laatikkoruoho

Laatikkoruoho is a Finnish horticultural term that refers to a group of small grasses and grass-like plants commonly grown in window boxes and other container plantings. It is not a single taxonomic species; instead, gardeners use the name for compact, clump-forming grasses and herbaceous plants suitable for box planters in Nordic climates. The term encompasses several species and cultivars, often from genera such as Festuca, Poa, and Carex, chosen for low stature, dense growth, and tolerance to cold.

Most laatikkoruoho varieties reach about 5–25 cm tall and spread slowly by short rhizomes or stolons. Leaves are narrow and linear, often blue-green or gray-green; they may be slightly stiff and have a subtle gloss. Inflorescences are small and inconspicuous, appearing in late spring to early summer; in many cultivated forms, seeds set in containers are limited and flowers remain minimal.

Cultivation and care: laatikkoruoho grows best in well-drained, moderately fertile potting mixes with good air circulation. It tolerates full sun to light shade and is generally drought-tolerant once established, though periods of regular watering in hot weather help maintain vigor. For containers, a gritty or sandy component improves drainage, and periodic feeding supports steady growth. Pruning after flowering helps maintain a tidy shape, and clumps may be divided every few years to refresh vigor.

Uses and significance: primarily ornamental, valued for its compact habit, year-round foliage, and suitability for balcony and window-box gardening in cold climates. The name reflects its common use in laatikko (box) planters.

Etymology: The term combines laatikko (box) and ruoho (grass).