Iris pseudacorus 'Golden Queen'

Upright and clump-forming, it typically reaches a height of 0.8 - 1.5 m (2.6-5 ft) and spreads about 0.6 - 1.0 m (2-3.3 ft) wide.

Deciduous, long, sword-shaped, and a vibrant medium to dark green. They provide a strong vertical element even when the plant isn't in bloom.

Showy, large, intense golden-yellow flowers with distinctive brownish-purple veining on the falls. Blooms appear profusely from May to July.

Thrives in full sun to partial shade. Full sun promotes the best flowering. It is an aquatic or bog plant, requiring consistently wet conditions.

Very good frost hardiness (USDA Zones 4-9). It overwinters reliably in temperate climates.

Prefers heavy, moist to wet, rich, and loamy soils. It can grow in standing water up to about 20-30 cm (8-12 inches) deep, or in very wet boggy ground.

Excellent for pond edges, stream banks, bog gardens, wet meadows, and aquatic planters. Its strong vertical form and bright flowers make it a fantastic architectural plant for water features.

High water requirement. Needs consistently wet to saturated soil, or can be planted directly in shallow water.

Generally low maintenance. Remove spent flower stalks to prevent self-seeding (it can spread vigorously in ideal conditions). Divide established clumps every few years in spring or autumn to maintain vigor and control spread.

Container plants can be planted from spring to early autumn, ensuring they have time to establish before winter.