What Soil Is Best for iris 'Royal Contrast'?
- Soil type
- Chalk · Loam · Sand
- Soil pH
- Alkaline · Neutral

iris 'Royal Contrast' · Iris 'Royal Contrast'
Grows best in well-drained, fertile soil in full sun. For maximum flower set, bearded iris rhizomes need to be warmed by the sun. Plant with the rhizome just above the soil to maximise exposure to the sun and make sure that there is not too much competition from surrounding plants