Bearded Iris Culture and Care

All of the bearded irises that we offer require the same cultural needs.

Planting: Iris should be planted so that the top of the rhizome is exposed and the roots are spread out and downward into the soil.

While planted at a good depth, this patch of bearded iris need to be divided; the increase has made the rhizome overcrowded. Knowing about correct iris culture ensures your plants stay healthy and bloom at their best.
While planted at a good depth, this patch of bearded iris need to be divided; the increase has made the rhizome overcrowded. Knowing about correct iris culture ensures your plants stay healthy and bloom at their best.

 

Soil Requirements: Bearded iris will thrive in most well drained soils. The additions of coarse sand, gravel or humus may be added to improve drainage. Water should not sit around or over the rhizome. The PH should be slightly acidic 6.8 but are very tolerant.

Water: Slightly moist in the spring, drying out with an occasional deep watering during the summer.

Light: Full sun with a minimum of six hours to bloom properly.

Fertilizer: Bearded irises are light feeders. Depending on your soil a light application of an all purpose fertilizer a month after bloom is beneficial. Avoid too much or high nitrogen which will encourage rot.

Mulching: As a general rule, do not mulch around the rhizome; too much mulch can encourage rot.

Transplanting: During summer dormant period, dig and divide every 3 to 4 years keeping the large healthy fans and discarding the old spent rhizomes. Trim the roots and leaves to four inches and replant in new prepared soils.