Iris (sk. germanica) 'CALIGULA' bearded iris
size/type
mid-sized perennial,mid-sized perennial
usual height
0,6-0,8m
usual width
0,3-0,5m
leaves
deciduous broadleaf
colour of leaves
flowers
showy
colour of flowers
blooming time
May-June
location
full to partial sun
USDA zone (lowest)
3 (down to -40°C)
winter protection
for zone 5+6
for zone 7
categorized
Description of the plant:
Caligula is another showy bearded iris variety with large flowers. They are bi-coloured: top petals are rich golden yellow, and the beard is velvety reddish brown. Sword-like leaves are deciduous, pale green. Flowering stalks are sturdy, about 60-80 cm tall and bear up to half a dozen flowers. Hybrid varieties of bearded iris thrive in full sun and should be planted in well-drained but moist soil of any pH. Various sources say different things about pH requirements, however, truth is that if the soil is reasonably fertile acidity does not play a significant role. Do not mistake them for water irises which do like wet and boggy conditions, these hybrids might rot it such environment.
The plants spread with their rhizomes but are not invasive. Unwanted new rhizomes can easily be dug out and transplanted somewhere else. The rhizomes like warmth so if your garden beds are mulched reduce its amount above iris’ roots to minium. Occasional fertilizing is welcome to enhance flowering and plant health. Thanks to showy flowers and variability of colours available they will be both a perfect companion plants for others as well as great features in any landscape design. Fully hardy to min. -40°C (USDA zone 3.
Last update 24-05-2017
