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Iris Bloom Sequences

Miniature Dwarf Bearded (MDB)
Height up to 8 Inches
Excellent for rock gardens and borders
Bloom time – Early April

Standard Dwarf Bearded (SDB)
Height – 8 to 16 inches
Quickly becomes a mass of color
Bloom time – mid April to mid May

Intermediate Bearded (IB)
Height – 16 – 27 ½ inches
Bloom time – early to9 mid May

Miniature Tall Bearded (MTB)
Height 16 – 25 inches
Small flowers on thin stems
Well suited for “cut flowers”
Bloom time – mid May

Border Bearded (BB)
Height 16 – 27 ½ inches
Smaller version of Tall Bearded
Bloom time – late May

Tall Bearded (TB)
Height – over 27 ½ inches
Large showy blooms
Bloom time – late May

Siberian (SIB)
Height – 12 inches and up
Grass like foliage
Low Maintenance
Bloom time – mid May

Japanese (JI)
Height – 20 inches and up
Large flower display

Spuria (SPU)
Tall heavy stalks
Heavy substance flowers
Bloom time – mid June

Louisiana (LA)
Large vigorous plants
Require lots of water
Bloom time – mid June


Planting iris of different types, like this MTB Say Red (Craig '08), will give you a longer bloom time in your garden. Photo by Will Plotner.