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Gladiolus Sweet Blue - Sword Lily

Gladiolus x grandiflorus Sweet Blue
Large-Flowered Gladiolus, Sword Lily

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This stunning new variety offers a very rare colour, a large flowering of a celestial and luminous lavender blue. Its ruffled flowers are spectacular, they appear to be woven from satin. Ideal for borders and cut flowers.
Flower size
10 cm
Height at maturity
1 m
Spread at maturity
20 cm
Exposure
Sun
Hardiness
Hardy down to -6°C
Soil moisture
Moist soil
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Best planting time March to April
Recommended planting time March to May, September to October
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Flowering time July to September
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Description

The Gladiolus 'Sweet Blue' flowers are adorned with a unique, rare, celestial, and luminous colour. In summer, the large inflorescences of a light lavender blue with ruffled petals and mauve reflections appear as if woven from satin. Its stems are strong, tall, and covered with numerous buds. Ideal as cut flowers. We deliver them in large sizes for the best blooming.

Cultivated gladioli, belonging to the Iridaceae family, are hybrids. They are divided into 3 main groups: Grandiflorus (large flowers), Primulinus (early blooming), and Nanus (butterflies). 'Sweet Blue', still difficult to find in the horticultural trade, belongs to the Grandiflorus group. Its ancestors are mostly native to South Africa. It is a perennial herbaceous plant with a storage organ. Its broad, sword-shaped leaves are arranged in a fan shape and form a tuft. When in bloom, the plant reaches about 1m (3ft) in height under good growing conditions. The leaves are topped by a tall spike-like inflorescence, with funnel-shaped flowers that are 10cm (4in) long and carried by sturdy stems. They are perfectly arranged on the spike and fit closely together without crowding. Their colour is a light lavender blue, with paler petals at the base, plicate and washed with mauve at the edges. The storage organ is a corm, which is a swollen stem with scales.

Gladioli and their long, colourful stems are reminiscent of the 70s and slightly formal floral arrangements. While they are irreplaceable in bouquets, in gardens, their silhouette appreciates the presence of plants with lush foliage to enhance their abundant yet romantically wild flowering. Plant 'Sweet Blue' corms alongside sage, tobacco, bee balm, and forget-me-nots, for example. They are commonly found in cottage gardens, where they accompany vegetables all the way to the kitchen table. To make bouquets, cut the flower stems when the first floret begins to open. Plant them at intervals of two weeks from early spring until the end of June to bring flowers into the house and garden all summer.

The gladiolus gets its name from the shape of its sword-like leaves, derived from the Latin word, gladius. Its wild forms were often represented in jewelry or on carpets and fabrics made by the Semitic people before the Christian era.

Gladiolus Sweet Blue - Sword Lily in pictures

Gladiolus Sweet Blue - Sword Lily (Flowering) Flowering
Gladiolus Sweet Blue - Sword Lily (Foliage) Foliage

Plant habit

Height at maturity 1 m
Spread at maturity 20 cm
Growth rate normal

Flowering

Flower colour mauve
Flowering time July to September
Inflorescence Spike
Flower size 10 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Gladiolus

Species

x grandiflorus

Cultivar

Sweet Blue

Family

Iridaceae

Other common names

Large-Flowered Gladiolus, Sword Lily

Origin

Cultivar or hybrid

Product reference41591

Planting and care

The 'Sweet Blue' Gladiolus thrives in rich, fertile, well-drained, sandy soils. Plant it in full sun. Space the bulbs 10 to 15cm (4 to 6in) apart and cover them with 10cm (4in) of soil. Avoid using manure to fertilise the soil as it promotes bulb rot. Gladioli are susceptible to frost, so they should be dug up when they have finished flowering or immediately after the first frost. Cut off the leaves and let them dry in a well-ventilated area for three weeks. Separate the old bulbs, store the new bulbs and bulblets over winter in a cool place protected from frost. The bulblets will flower in two years. It is best to not plant gladiolus bulbs in the same spot for several consecutive years. An annual rotation will yield better results. In mild climates, corms can be planted in September-October and left in the ground over winter without damage.

Planting period

Best planting time March to April
Recommended planting time March to May, September to October
Planting depth 10 cm

Intended location

Suitable for Meadow
Type of use Border, Vegetable garden
Hardiness Hardy down to -6°C (USDA zone 9a) Show map
Ease of cultivation Amateur
Planting density 35 per m2
Exposure Sun
Soil pH Neutral, Any
Soil moisture Moist soil, Rich and well-drained.

Care

Pruning No pruning necessary
Soil moisture Moist soil
Disease resistance Average
Overwinter Needs to be stored

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