How to Grow Iris reticulata 'Katharine Hodgkin'

Bulbs are planted in fall and undergo winter dormancy, requiring 12-16 weeks of cold temperatures (below 55°F) to break dormancy.

Plant in October-November in most regions. Ensure good drainage to prevent rot during wet winter months. No watering needed if soil is naturally moist.

In late winter, roots develop and narrow, grass-like foliage emerges from the soil. Leaves are dark green and distinctly reticulated (netted).

Ensure soil drains well to prevent rot. Provide light watering if winter is dry. Protect from heavy foot traffic.

Flower buds form at the center of leaf clusters, and stems elongate slightly. Buds are visible and tightly closed initially.

Maintain moderate soil moisture. Protect early buds from heavy frost or freezing rain if possible (though they're hardy). No feeding necessary.

Delicate flowers open with pale yellow-green sepals (upper petals) and blue-purple falls (lower petals) with fine veining and yellow throat signals. Blooms are highly fragrant and typically last 2-3 weeks.

Deadhead spent flowers to improve appearance, though not essential. Avoid overhead watering that may damage delicate petals. Do not remove foliage yet.

Flowers fade and fall away. Foliage continues to photosynthesize and builds energy reserves in the bulb for next year. Leaves remain green and upright.

Allow foliage to remain until it yellows and dies back naturally (5-6 weeks after bloom). Do not cut or braid leaves. Water occasionally if spring is dry. Stop watering as foliage yellows.