Cranbrook Intermediate Bearded Iris Iris 'Cranbrook' (IB)
ABOUT
The Iris 'Cranbrook' is a captivating and ornamental flowering plant known for its striking bloom colors and elegant form. Its flowers exhibit rich hues typically ranging from deep purples to vibrant blues. Each blossom consists of three upright petals, known as standards, and three downward-curving petals, called falls. The falls often showcase intricate veining or spotting, adding an extra layer of visual interest. The petals can also have contrasting colors on their beards, the fuzzy extensions that stretch along the falls’ midlines. The foliage is sword-shaped, with a deep green color that forms a graceful and arching backdrop to the stunning blooms. The leaves grow in a clump, emerging from rhizomes that spread underground. The overall effect of the Iris 'Cranbrook' in bloom is a spectacular display of color and form that can add a touch of elegance to any garden setting.
About this plant
- Names
Family
Iridaceae
Synonyms
Cranbrook Intermediate Bearded Iris
Common names
Iris 'Cranbrook'.
- Toxicity
To humans
Irises contain compounds such as irisin, iridin, or irisine which can be toxic when ingested. Although they are primarily ornamentals and not usually consumed, accidental ingestion can cause digestive discomfort. Symptoms may include nausea, vomiting, abdominal pain, and diarrhea. Handling the plant can sometimes lead to skin irritation due to its mild toxicity.
To pets
Irises can be toxic to pets if ingested. The most toxic part is the rhizome, but all parts of the plant can potentially cause symptoms of poisoning. These symptoms may include drooling, vomiting, diarrhea, lethargy, or abdominal pain. Pet owners should ensure that their pets do not consume any part of iris plants to prevent the possibility of toxicity.
- Characteristics
Life cycle
Perennials
Foliage type
Deciduous
Color of leaves
Green
Flower color
Varies
Height
2-3 feet (0.6-0.9 meters)
Spread
1-2 feet (0.3-0.6 meters)
Plant type
Bulb
Hardiness zones
3-9
Native area
Northern hemisphere
Benefits
- General Benefits
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- Ornamental Appeal: Adds stunning visual interest to gardens with its distinctive flowers and sword-like foliage.
- Drought Resistance: Once established, boasts a remarkable ability to withstand dry conditions, reducing the need for frequent watering.
- Low Maintenance: Requires minimal care beyond basic planting and occasional dividing, making it ideal for busy gardeners.
- Cold Hardy: Can survive in colder climates, making it a suitable perennial for a variety of growing zones.
- Attracts Pollinators: Flowers are known to attract bees, butterflies, and other beneficial pollinators, aiding in the health of the garden ecosystem.
- Soil Adaptability: Tolerant of a range of soil types, though it prefers well-draining soils, making it a versatile addition to any landscape.
- Propagation Ease: Can be easily propagated by division, allowing gardeners to expand their collection or share with others.
- Varied Blooming Times: Depending on the cultivar, some irises can bloom from spring to summer, offering extended periods of color and interest.
- Medical Properties
This plant is not used for medical purposes.
- Air-purifying Qualities
This plant is not specifically known for air purifying qualities.
- Other Uses
- The tall and sturdy stems of Iris 'Cranbrook' can be used in basket weaving to create unique, decorative items for the home.
- The flowers can be pressed and included in personal diaries or scrapbooks as a method of preserving memories from a garden.
- The rhizomes can be dried and used in potpourri mixes to add a subtle, earthy fragrance to a room.
- Pigments extracted from Iris 'Cranbrook' petals can be used in natural dyeing processes for fabrics, yielding unique colors.
- The plant can serve as a living mulch in garden beds, suppressing weeds and conserving soil moisture when planted densely.
- Iris 'Cranbrook' can be planted in rain gardens as they can tolerate wet conditions and help in rainwater absorption and filtration.
- The petals can be used in the creation of eco-friendly confetti for weddings or celebrations, degrading naturally when left outdoors.
- The blooms can be used to decorate food dishes or drinks as an ornamental edible garnish, though consumption should be in moderation due to potential irritants.
- The strong and straight stems of the Iris 'Cranbrook' could potentially be used as natural supports for other plants in the garden.
- The distinctive form and color of Iris 'Cranbrook' can be used in photography as a natural backdrop or subject for still-life compositions.
Interesting Facts
- Feng Shui
The Iris is not used in Feng Shui practice.
- Zodiac Sign Compitability
The Iris is not used in astrology practice.
- Plant Symbolism
- Royalty: The Iris 'Cranbrook' shares the same symbolism of royalty as other iris varieties, primarily because of its royal purple color which has been historically associated with kingship and sovereign authority.
- Wisdom and Valor: Irises are often associated with wisdom and courage. In Greek mythology, Iris was a messenger goddess who symbolized communication between heaven and earth, often linked with knowledge and heroism.
- Faith and Hope: The iris flower is also a symbol of faith and hope, due to its resilience and the way its blossoms trustingly open up to the sky.
- Purity: The exquisite and delicate nature of the Iris 'Cranbrook' bloom can also represent purity and innocence, a common symbolism for many white or lightly-colored flowers.
- New Beginnings: The iris is a harbinger of spring, symbolizing new beginnings and the renewal that comes with the changing of seasons. Its bloom signifies the fresh start represented by springtime.
- Water
The Intermediate Bearded Iris, commonly referred to as Iris 'Cranbrook', should be watered deeply to encourage deep root growth but allow the soil to dry out slightly between waterings. During the active growth period in spring and early summer, water the Iris about once a week with about a gallon of water per plant, depending on rainfall and soil type. Watering frequency should be reduced after blooming and during dormant periods in late summer to fall. Overwatering or poor drainage can lead to rhizome rot, so it is crucial to ensure the soil is well-draining. During hotter, drier spells, you may need to increase watering but always check the soil moisture level first.
- Light
Intermediate Bearded Iris 'Cranbrook' thrives best in full sun where it can receive at least six hours of direct sunlight each day. Planting the Iris in a south-facing location will provide the necessary bright conditions for optimal growth and bloom. The plant can tolerate partial shade, especially in regions with very hot summers, but too much shade can reduce flowering and lead to weaker plants.
- Temperature
Intermediate Bearded Iris 'Cranbrook' performs well in a wide range of temperatures and is hardy in USDA zones 3 through 10, which equates to a minimum temperature of -40 degrees Fahrenheit. They bloom best when spring temperatures are between 55 and 75 degrees Fahrenheit. It's important to avoid very high summer temperatures above 90 degrees Fahrenheit without sufficient water, as this can cause stress to the plant.
- Pruning
Iris 'Cranbrook' requires pruning to remove spent flower stems after blooming and to cut back foliage in late fall to prevent overwintering pests and diseases. Trimming the leaves to about 4-6 inches above ground level after the first frost helps to clean up the plant and reduce issues next season. In addition, divide the clumps every 3-5 years to rejuvenate and maintain vigorous growth, usually done in late summer.
- Cleaning
As needed
- Soil
Bearded iris prefer well-draining soil mixed with compost; a pH of 6.8 to 7.0 is ideal for Iris 'Cranbrook'.
- Repotting
Iris 'Cranbrook', like other bearded iris, generally doesn't require frequent repotting; do it every 3 to 5 years.
- Humidity & Misting
Bearded iris, including Iris 'Cranbrook', are tolerant of a range of humidity levels, focusing more on proper watering.
- Suitable locations
Indoor
Ensure full sun, minimal watering, and good air circulation for indoor Iris 'Cranbrook'.
Outdoor
Plant Iris 'Cranbrook' in full sun with well-draining soil and space rhizomes apart.
Hardiness zone
3-9 USDA
- Life cycle
The life cycle of the Iris 'Cranbrook' (commonly known as Bearded Iris) begins with seed germination, which occurs in late summer to fall after a period of stratification to break seed dormancy. Following germination, the seedlings develop into juvenile plants and produce small rhizomes. In the second or third year, the mature rhizomes give rise to sword-like leaves and the plant enters the vegetative growth stage. Flowering occurs in late spring to early summer, where the Bearded Iris displays its distinctive colorful blooms. After flowering, the plant sets seeds in pods that eventually dry and release seeds while the rhizome continues to grow and can be divided to propagate new plants. Finally, the plant enters a period of dormancy in late fall or winter, reducing above-ground growth until the next growing season.
- Propogation
Propogation time
Late summer to autumn
Propogation: The most popular method of propagating the Iris 'Cranbrook', also known as the Bearded Iris, is through division, typically done post-flowering in late summer to early fall. To evenly divide the rhizomes, gardeners should use a clean, sharp knife, cutting the thick roots into pieces that have at least one fan of leaves and a portion of the rhizome. These cuttings are then replanted at or just slightly below the soil surface, spaced about 12 to 24 inches (approximately 30 to 60 centimeters) apart to allow for growth. It is critical to ensure that the soil is well-draining to prevent rot and that the newly planted rhizomes receive adequate water to establish themselves. This method of division helps maintain the vigor of the Iris and encourages blooming in the following season.