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Tall Bearded Iris

Bearded iris (tall bearded, medians and dwarfs) are hardy perennials grown from rhizomes. They are ideal plants for the southern states (VIC, TAS, SA), inland and high country areas of NSW and QLD, coastal NSW south of the central coast and Southern WA. They are not well suited to northern coastal NSW or coastal Queensland.
Bearded iris like cold winters and fertile, alkaline soil. Bearded iris should be planted in open positions that get as much sun as possible. Avoid the use of animal manures near the rhizomes as this may induce rot. We incorporate a small handful of an 8-9 month slow release fertilizer at planting time. Rhizomes are best planted 30cm-50cm apart and such that the top of the rhizome is at ground level. For best results, planting should be done between November and April but bearded iris can be moved at any time of the year without risk of loss. Clumps should be lifted and divided every 3-4 years.
Once planted the rhizomes should be well watered in for about three weeks to a month and then treated as a normal garden plant.
Bearded iris are classified according to height of bloom spikes and bloom period. Dwarfs grow to a maximum height of 40cm, medians from 41cm-70cm and tall beardeds are above 70cm in height. The dwarfs flower first followed by the medians with the talls the last to flower. Tall beardeds can be chosen for their successful cultivation in the Sydney district.
The time of bloom indicated in the descriptions in this catalogue is when they bloom for us and height of spike is approximate for our growing conditions. Whether a variety reblooms is also based on our experience. There will be variation from area to area and garden to garden.