Iris germanica Amethyst Dancer - Bearded Iris

A sunny, warm, and relatively dry location in summer is ideal for planting irises. They struggle to grow and flower when planted in shade. They are hardy and do not require winter protection. Well-drained soil is perfect, even if it is on the dry and chalky side. Excessively wet soil can lead to rhizome rot. Plant them from July to September. This allows the rhizomes enough time to grow before being dug up, and to develop new roots before winter. They should be planted as soon as they are purchased for best results. Plan to divide irises every 4 years to provide them with fresh soil. They have vigorous growth and need space to develop and flower well. Plant them with appropriate spacing based on the size and vigour of the variety: approximately 34 to 50cm (13 to 20in) for tall irises (5 to 10 plants per square metre). In a monochromatic planting, rhizomes should be planted in a staggered pattern. For a mix of colours, plant them in groups of several plants of the same variety. Always consider the direction of rhizome growth, arranging them in a star shape with buds and leaves facing outward, and spacing them well away from other varieties to allow room for growth.

Planting:

Dig a hole that is wide and deep enough. Create a conical mound of soil in the hole, on which the rhizome and spread-out roots are placed. Cover the roots. It is important for the rhizome to be positioned at the surface of the soil. It should not be planted in a depression (risk of rot), so anticipate that the soil will settle and the iris will sink. In clayey or damp soil, the rhizome should even be left elevated on a slight mound of a few centimetres. To secure the soil around the roots, lightly tamp the soil and thoroughly water immediately after planting. Water 2-3 times, if necessary, until the plant establishes.

Maintenance:

Keep the soil free of weeds by lightly hoeing, taking care not to damage the rhizomes or roots. Weeds create shade for the irises, retain moisture (leading to rot), and attract slugs. Also, remove dry leaves. If they are diseased (red-bordered spots of heterosporiosis), burn them. Remove faded flowers.