Caesar’s Brother Siberian Iris (Iris sibirica ‘Caesar’s Brother’)

Caesar's Brother Siberian Iris


What is Caesar’s Brother Siberian Iris

If your garden is your queen, the Caesar’s Brother Siberian Iris is the jewel to trim her crown! Ideal for creating waterside interest, this perennial is a moisture-loving, pest-resistant, dazzling springtime gem.

Whether placed along ponds or paths, across slopes, or as a rain garden feature, the Siberian Iris’s delicately petalled blooms will paint your landscape violet in the spring. Its roots also soak up and filter stormwater runoff, enhancing nearby water quality.

Caesar’s Brother Irises add excellent height and vibrant color to guide the eye upward. They also form clumps of emerald foliage that will remain plumb and green throughout the season. If situated correctly in well-draining, moist soil, the adaptable plant is easy to grow and maintain, even with the occasional drought.

Mark your calendar for the Caesar’s Brother Iris’s stunning spring bloom, which lasts up to two weeks. And in the fall, you can easily divide the plant to generate even more blossoms each year.

Perfect your water-centric landscape with this resilient, showy iris.

Caesar's Brother Siberian Iris (Iris sibirica 'Caesar's Brother') Iris sibirica 'Caesar's Brother'

How to Grow and Care for Caesar’s Brother Siberian Iris

Caesar’s Brother Siberian Iris (Iris sibirica ‘Caesar’s Brother’) Growing Requirements

Hardiness zone 4-8 outdoors


For the best growth, plant your Caesar’s Brother in a full sun location. Partial sun can work for this flower if you live in a warmer climate. Regardless of growing zone, make sure that you place it in a spot with moist, but well-draining, normal-to-acidic soil.

Consider mixing peat with the soil when planting. Then, each year you can also add 1-2 inches of mulch to retain the soil’s moisture.


These irises prefer water (pondside feature, anyone?), so make sure to water as needed to keep the soil moist—especially if you choose to plant it in a pot.


To help this plant grow to its optimal height and health, fertilize their pots or beds in early spring and again just after bloom.


Your iris will die back naturally, so it requires no pruning. However, in the winter you may choose to cut down the stems (about 2 inches from the soil) for a cleaner look.

Caesar’s Brother Siberian Iris (Iris sibirica ‘Caesar’s Brother’) Details

Common name Caesar's Brother Siberian Iris
Botanical name Iris sibirica 'Caesar's Brother'
Plant type Perennial
Hardiness zone 4-8 outdoors
Growth rate Medium
Height 1.5-4 ft.
Width 1 ft.