More delicately flowered than Bearded iris, Siberian’s have medium-sized flowers on 2 1/2 to 3 1/2 foot stalks which stay green all summer and function as an amazing filler in a perennial border.
Equally at home in the dry border or a moist area, Siberian’s love clay and tough conditions. Trouble free, deer resistant, and a hummingbird attractant, Siberian’s flower in June in my zone 5b garden. Most grow in zones 3 –9.
Early evening is the time to watch the iris’s closely. Hummingbirds will zoom in to take a sip of them in their last drink before roosting time. Above you see Iris Sibirica ‘Caesar’s Brother’ (purple) and Iris Sibirica ‘Butter and Sugar’ (white).
How To Grow A Siberian Iris:
- Plant iris flowers in mid-spring to late summer. Siberian iris prefer a planting site that is full sun, however, the plant can easily survive to part shade. Once you have found your planting spot, work in a 2 inch layer of organic compost.
- Dig a shallow hole. Plant iris, covering rhizome with soil.
- Water well the first year. After that Siberian iris are virtually indestructible, particularly if you mulch well, I only water mine during drought.
- Fertilizer is not necessary in my experience if you regularly amend soil with compost, organic fertilizer works fine if you feel fertilizing is necessary.
- Leave seed heads on the plant once flowered to collect seed, or trim off if you like a neater look in the garden.
Viola! Easy beauty in the garden!!