How to Grow Creeping Iris

Planting in the Ground

• 1

  Dig a hole that is twice the size of the creeping iris plant's root ball and at the same depth as the plant in its nursery container. Place the creeping iris in the hole and pack soil around the base. Space the plants every 12 inches to accommodate mature width.

• 2

  Press your fingers into the first 2 to 3 inches of soil to see if the plant needs to be watered. Moist soil indicates that the plant is not ready for water. Apply 1 inch of water at the base only when the soil is dry.

• 3

  Dilute a complete fertilizer with a NPK balance of 10-10-10 in the spring in a watering can. Apply the mixture to the base of the creeping iris according to the directions on the fertilizer package.

Planting in a Container

• 4

  Fill a container two-thirds of the way full with potting soil. Mix an all-purpose fertilizer that has a balanced NPK amount, such as 10-10-10, into the soil.

• 5

  Create a hole in the potting soil with your hands. Place the creeping iris inside of the hole. Add more potting soil to pack around the base of the plant.

• 6

  Water the creeping iris until it begins to drain from the draining holes. Set the plant container on a saucer filled with 1 inch of pea gravel in an area that receives full sunlight.