Iris kerneriana

Spring - early · Outdoors

Feed with slow release fertiliser

Apply a general purpose slow release fertliser around the plant in early Spring, scratching it into the ground. Keep rhizomes exposed.

Spring-Autumn · Outdoors

Water during dry periods

For plants in the ground, when there has been little or no rain for a period of 7-10 days and the soil is dry, give it a deep watering and repeat weekly until there is a downpour of rain. Check plants in pots more frequently, especially in hot weather.

Winter · Planting

Divide plant to maintain size every 5 years

Rhizomes can be divided, or clumps separated, discarding any weak or diseased parts and replanting the remainder. The rhizome sits below the soil.

Outdoor planting · Outdoors

Planting Iris rhizomes

Position in a hole with roots pointing down and the top half of the rhizome level with the soil surface. Fill soil around the roots, leave the top part bare of soil so it will be exposed to the summer sun (this ensures flowering).

Applies to summer flowering Iris germanica or Bearded iris. Not Iris siberica