How to Grow Iris Bulbs in a Container

Irises (Iridaceae) are among the oldest known perennials and have been around for more than 4,000 years. In ancient Egypt the iris flower was their symbol of majesty and power. In Greek mythology, the iris was named after their goddess of the rainbow -- Iris. The more than 200 species of irises are divided into two categories: bulbous and rhizomatous. Bulbous irises have long narrow leaves, smaller flowers, and are beardless. Rhizomatous irises are bearded with large showy flowers and have broad sword-like foliage. Bulbous irises are ideal for planting in containers in the fall and overwintered in a cold shed or garage.

Container with drainage hole
Gravel
Commercial soil-less potting mix
Garden spade

Instructions

- 1
  
  Healthy iris bulbs produce beautiful flowers.
  
  Purchase healthy iris bulbs from a reliable nursery or garden center. Healthy bulbs should feel solid and be free of bruises, cuts or other visible damage.
- 2
  Select a sturdy container with one or more drainage holes and a drip tray. Base the size and diameter of the container on how many iris bulbs you want to plant.
- 3
  
  Use loose gravel on bottom of container.
  
  Layer 1 to 2 inches of gravel in the bottom of the container to promote ample drainage.
- 4
  Fill the container within 1 to 2 inches below the rim with commercial non-soil potting mix, and then set it on the drip tray.
- 5
  Dig a hole for each iris bulb to a depth twice the diameter of the bulb. Space the holes so that the iris bulbs don't touch each other.
- 6
  
  Bulbs grow roots on the wide end.
  
  Set one iris bulb in each hole, making sure the wide end of the bulb faces down.
- 7
  Cover each iris bulb with potting mix, and then tamp the soil lightly all around to remove any air pockets.
- 8
  Water the iris bulbs generously right after planting, as this helps promote rapid root growth. Then water intermittently until the container is moved outdoors in the spring.

The Best Flower Bulbs for North Central Texas

When to Plant Tulip Bulbs in Colorado

Bulbs