  In general, your growing area should be kept clear of debris, including dead foliage, so that insects won't have a place to hide and winter over. The seed pods should also be removed as soon as possible to keep bee-pollinated seeds from dropping into your beds. Otherwise, you may suddenly find a lot of iris in your beds that you didn't order and which may not be as attractive as the plants you paid for. If you want to see what the new crosses look like, remove the seed pods and plant the seed in pots or in another bed. Beardless iris: Species, Japanese, Siberian and Louisiana Beardless iris: species, Japanese, Siberian and Louisiana, must not be allowed to dry out during transplant. It is beneficial to soak them in water overnight before planting. Once planted, they should be kept moist. They don't need to be in standing water, just regular perennial-bed type moisture. Japanese and Siberians will die back in late fall and won't show new growth until Spring. They really won't start growing well until mid-Summer. After they are established they will be very hardy. Most beardless iris want a sunny location and a slightly acidic soil for best performance and bloom. The beds should be prepared with plenty of humus and the plants mulched well. Plant the Louisiana and Siberian iris about 1" deep and the Japanese 2" deep. Japanese and Siberians should be kept moist during the summer but do not like wet feet in the winter. The Louisianas will grow in standing water or in moist garden soil. Fertilize with a balanced fertilizer, 15-15-15 for example, in the early spring and again after bloom. Remove the bloom stalks after flowering and cut the foliage down to just a few inches in early winter. Transplanting should be done in the early fall to avoid the hot summer days.
Other beardless iris
Bearded iris
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