what is the ideal soil ph for iris
SOIL CONDITIONS - Bearded iris need a balanced, well-drained soil but are very adaptable to a variety of soil types. Raised beds can help with drainage and are a MUST for areas with high rainfall. Iris, like most perennials, prefer neutral to slightly acidic soil (pH of 6.8 - 7.0 is ideal). Heavy clays need to be amended with gypsum or coarse sand to aid drainage. In our production fields, we till the soil to a depth of 10-12 and add a dash of superphosphate or bone meal.