Sweet iris (Iris pallida)

Sweet iris

Also known as: Pale iris

Sweet iris is a tall, stately perennial beloved in gardens for its tri-colored foliage and showy, purple blooms that appear in the spring. Its name comes from the flowers’ sweet fragrance, which attracts bees and butterflies, as well as gardeners.

Scientific classification

Species

Sweet iris (Iris pallida)

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Toxic to Pets

Toxicity

61 cm to 91 cm

Plant Height

30 cm

Spread

Green, Yellow, White, Variegated, Silver

Leaf Color

12 cm

Flower Size

Blue, Yellow, Purple

Flower Color

Winter dormancy

Dormancy

Deciduous

Leaf type

5 - 35 ℃

Ideal Temperature

Images of Sweet iris

Distribution of Sweet iris

Distribution Map

Sweet iris is indigenous to the Mediterranean region, thriving in temperate zones. It has since seen a wider introduction across various parts of Europe and the Near East. These regions offer a suitable climate for sweet iris, leading to its popularity in cultivation in areas with similar environmental conditions.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Rocky places in limestone hillsides and the sides of gorges.

Cultivars

There are several recognized cultivars of Sweet iris, including the following common varieties :

Sweet iris 'Variegata'Sweet iris 'Argentea Variegata'

Care Guide for Sweet iris

Every week

Water

Full sun

Sunlight

5 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Sweet iris thrives in humid conditions and requires consistent moisture, preferring stable soil hydration. While moderately drought-tolerant, weekly watering is essential for optimal health. As an outdoor plant, it benefits from rainwater during the growing season to meet its hydration needs.

Fertilize: For optimal growth of sweet iris, use balanced fertilizers in spring and high phosphorus types before blooming. Apply quarterly at half-strength on moist soil to avoid root burn. Adjust frequency seasonally, reducing during dormancy, and ensure accurate measurement for plant health.

Pruning: Sweet iris thrives with proper pruning, ideally done in early to late spring. Remove spent blooms, cut back flower stalks, and trim yellowing leaves to boost growth and flowering. Regular pruning enhances its appearance and encourages robust blooms in subsequent seasons.

Propagation: Sweet iris is propagated through division, ensuring each rhizome section has a leaf fan. Plant at the original depth in well-drained soil, allowing space for growth. Careful handling preserves root integrity, promoting successful establishment in new locations.

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