Found native from central Europe to Asia the Siberian is one of the most adaptable irises for the perennial bed. Tetraploids (tet.) generally have stockier-looking flowers, foliage and stems than do diploids (dip.). All are deciduous and have a grass-like foliage. Bloom season is late May.   Planting: Newly received plants that are bare root should … Continue reading Siberian Iris Culture