Species Siberian iris
white-yellow flowers with white buds, long, narrow, lime-green leaves, and green, upright stems

Siberian iris

Iris 'White Swirl'

The Siberian iris (Iris 'White Swirl') is a stunning addition to any garden, with its dramatic display of billowy white blooms tumbling over lush green foliage. Its slender stalks support a profusion of ruffled flowers edged with delicate blue veins, each cup-shaped bloom boasting a striking yellow throat. Growing less than two feet tall, this elegant perennial packs a powerful punch in the landscape, providing months of beauty from spring to fall. Hardy in USDA hardiness zones 3-9, it is easy to care for, requiring little water once established.

Cycle:

Herbaceous Perennial

Watering:

Frequent

Propagation:

Division,Cormlet Propagation,Seed Propagation,Cutting

Hardiness Zone:

3 - 8

Flowers:

White with yellow throat Flowers

Sun:

Full sun,part shade

Leaf:

Yes

Leaf Color:

green,white

Growth Rate:

Low

Maintenance:

Low

Care Level:

Medium

watering

The Siberian iris (Iris 'White Swirl') should be watered about once a week, ensuring the soil is kept moist but not soggy. When watering, soak the soil thoroughly but avoid getting water on its foliage. In periods of extreme heat the iris may require more than once-a-week watering. At times when watering is not needed, feel the soil around the iris – if it is dry, a thorough watering is likely needed. Also, be aware that during periods of drought, the Siberian iris might require extra water.

sunlight

Siberian iris (Iris 'White Swirl') enjoys sunny conditions. It should receive at least 6 to 8 hours of sunshine per day, preferably in the morning or late afternoon to prevent any dehydration from the midday heat. This plant will not thrive in full shade, though it can tolerate partial shade in the afternoon, particularly during hot, sunny summer days.

pruning

Siberian iris (Iris 'White Swirl') should be pruned twice per year - once in early spring and then again in late summer or fall. For the spring pruning, wait to prune until the new growth has appeared. Cut away any brown foliage or winter-damaged stems and remove any self-seeded seedlings. In late summer or fall, remove any dead or damaged foliage. Cut back any of the spent stems with shears. This will give the plant a tidy and neat overall appearance and will also help promote new growth in the spring.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Iris 'White Swirl' typically starts flowering in late spring, usually in May or June.

Starts Flowering

Iris 'White Swirl' typically starts flowering in late spring, usually in May or June.

Hardiness Map