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Bulb
Iridaceae
Gladiolus 'Dusky Twilight' (Gladiolus)
Gladiolus × hortulanus
Gladiolus 'Dusky Twilight' (Gladiolus × hortulanus) is distinguished by its elegant flower stalks adorned with deep purple, plum-hued blossoms. Their velvety coloration creates a mysterious, refined, and soothing ambiance in summer arrangements. Its dark green, narrow, upright foliage forms a structured clump that beautifully highlights the flowers. Reaching approximately 1 m (3.3 ft) in height, this gladiolus blooms generously from July to September and brings beautiful verticality to the garden. A perennial cultivated as an annual in our climate, the plant is not hardy in Quebec, and its bulbs must be stored away from frost during winter. Gladiolus 'Dusky Twilight' prefers full sun exposure in rich, loose, and perfectly drained soil.
- Quantity
- 15 bulbs
- Exposure
- Sun
- Life cycle
- Thrips, aphids, slugs, and bulb rot in poorly drained soil. Good air circulation and effective drainage reduce risks.
- Hardiness
- Zone 8
Discover the plant
Common nameGladiolus Dusky Twilight
FamilyIridaceae
GenusGladiolus
TypeBulb
Botanical nameGladiolus × hortulanus
‘Dusky Twilight’ Gladiolus (Gladiolus) is characterized by its elegant flower stalks laden with deep purple, plum-tinged blooms. Their velvety color creates a mysterious, refined, and soothing ambiance in summer plantings. Its narrow, upright, dark green foliage forms a structured clump that beautifully highlights the flowers. Reaching approximately 1 m (3.3 ft) in height, this gladiolus blooms generously from July to September and brings beautiful verticality to the garden. A perennial cultivated as an annual in our climate, the plant is not hardy in Quebec, and its corms must be kept frost-free during winter.
The ‘Dusky Twilight’ Gladiolus prefers full sun exposure, in rich, loose, and perfectly drained soil. Plant the corms between March and May, once the risk of frost has passed, about 10 cm (4 in) deep and spaced 10 cm (4 in) apart. Water after planting, then keep the soil slightly moist during growth without ever waterlogging it. A balanced fertilizer initially, followed by a potassium-rich fertilizer when the stalks develop, promotes abundant flowering. In windy areas, a stake can support the long stems. After flowering, allow the foliage to naturally yellow before digging up and storing the corms in a cool, dry place.
Perfect for beds, borders, cutting gardens, and large containers, ‘Dusky Twilight’ Gladiolus brings height, movement, and depth to compositions. Its dark shades harmonize beautifully with dahlias, cosmos, salvias, echinaceas, and ornamental grasses, especially in romantic or country gardens. The long stalks offer excellent vase life, allowing for elegant bouquets throughout the flowering period. Rich in nectar, the flowers attract bees, butterflies, and other pollinating insects. In pots, choose a container at least 30 cm (12 in) in diameter and place it in a warm, very bright location.
Sowing guide
It all startswith a seed.
Sowing depth
10 cm (4 in)
Sowing period
March to May
Propagation
Division of the bulblets produced around the main bulb after the dormancy period.
Growing method
Plant bulbs between March and May once all danger of frost has passed. Plant them about 10 cm (4 in.) deep in fertile, light, and perfectly-drained soil, spacing them 10 cm (4 in.) apart to ensure good air circulation. Water after planting, then maintain regular moisture during growth. Grow in full sun for abundant blooms in late summer. Dig up the bulbs in autumn and store them in a dry, cool, and frost-free place. A perennial grown as an annual in our climate, the plant is not hardy in Quebec and its bulbs must be kept frost-free during the winter. Gladiolus ‘Dusky Twilight’ prefers a full sun exposure, in rich, loose, and perfectly-drained soil. Plant the bulbs between March and May, once the risk of frost has passed, about 10 cm (4 in.) deep and spaced 10 cm (4 in.) apart. Water after planting, then keep the soil slightly moist during growth without ever waterlogging it. After flowering, allow the foliage to yellow naturally before digging up and storing the bulbs in a cool, dry place. Perfect for beds, borders, cut flower gardens, and large containers, Gladiolus ‘Dusky Twilight’ adds height, movement, and depth to compositions.
Soil and care
The right care,at the right time.
Soil pH
Slightly acidic to neutral
Minimum temperature
32 °F (0 °C)
Care level
Easy
Watering
Water regularly during growth to keep the soil slightly moist. Reduce watering after flowering when the foliage begins to yellow. Before watering, check the moisture level below the surface with your finger rather than following a fixed schedule. Recent rain, wind, and container growing can quickly change needs. Direct water to the soil, at the base of the plant, and allow excess water to drain freely.
Soil type
Heavy soils should be amended with compost to improve drainage. Gladiolus 'Dusky Twilight' prefers full sun exposure, in rich, loose, and perfectly drained soil. Water after planting, then keep the soil slightly moist during growth without ever waterlogging it. After flowering, allow the foliage to yellow naturally before digging up and storing the bulbs in a cool, dry place.
Fertilization
Apply a balanced fertilizer at the start of growth, then a potassium-rich fertilizer when the flower stalks develop. Avoid excess nitrogen. Follow the dosage indicated on your fertilizer packaging and measure the quantity before applying it. Take into account any compost and other nutrients already provided to avoid over-fertilizing the same plant.
Seasonal care
Plant corms in spring, after the last frost, in warm, well-drained soil. Choose a sunny spot and prepare an area large enough to space out your plants without crowding future flower stalks. Place each corm in the correct orientation, then cover it to the depth indicated on its packaging. Water after planting and monitor moisture levels as the foliage develops. In a windy location, install supports before the stems grow tall. An accessible row makes it easier to attach a flexible tie and helps support the flower stalks without damaging the leaves or disturbing already rooted corms. During flowering, water at the base when the soil dries out and remove faded flowers to keep the stalks tidy. For bouquets, cut when the first flowers begin to open, while leaving several leaves on the plant. This foliage allows the corm to replenish its reserves. In Quebec, plan to remove the corms from the soil before they are exposed to frost, then let them dry in a well-ventilated area. Remove any damaged parts and store healthy corms dry, frost-free, in a breathable container. Keep each variety identified and check its condition during storage before the next planting. Over the seasons, observe new shoots, soil moisture, and the condition of the stems. A durable label helps locate the planting during its dormancy. Clean tools after cutting diseased parts and remove debris that degrades around the base.
Container growing
A garden,within reach.
Recommended pot size
Minimum 30 cm (12 in.) diameter
Container growing requires you to estimate the volume needed for the roots and the plant's final height. Choose a stable pot with drainage holes and a substrate suitable for planting. Leave enough space to allow for the recommended depth and spacing, rather than crowding the plants to fill the pot immediately. Place the container in the indicated exposure and regularly check the moisture, especially in hot or windy weather. A pot is more exposed to temperature variations than planting in the ground. Therefore, plan for a wintering location from the outset that is compatible with the needs of the plant and the climate of your region. Plant the corms in spring, after the last frost, in warmed, well-drained soil. Choose full sun and prepare an area wide enough to spread out the planting without crowding the future flower stalks. Place each corm in the correct orientation, then cover according to the depth indicated on its packaging. Water after planting and monitor moisture as foliage develops. In a windy location, install supports before the stems grow tall. An accessible row makes it easier to tie a flexible support and hold the flower stalks without damaging the leaves or disturbing the already rooted corms. Plan to bring the storage organs indoors, away from frost, for the Quebec winter.
Bloom and dimensions
Its place,in your garden.
Mature height
1 m (40 in)
Width / spread
10 cm (4 in)
Flower color
Peach, pink and red
Foliage color
Green
Foliage type
Obsolete
Growth rate
Quick
Bloom period
Flowering from July to September with long stems covered with ruffled flowers in peach, antique pink, and red tones. Gladiolus 'Dusky Twilight' (Gladiolus × hortulanus) is distinguished by its elegant flower spikes adorned with deep purple flowers nuanced with plum. Reaching about 1 m (3.3 ft) in height, this gladiolus flowers profusely from July to September and brings beautiful verticality to the garden. A balanced fertilizer initially, followed by a potassium-rich fertilizer when the spikes develop, promotes abundant flowering.
Garden associations
In goodcompany.
Companion plants
To accompany 'Dusky Twilight' gladiolus, you might consider cosmos, zinnias, or dahlias. Choose neighboring varieties based on their height, flowering period, and the colors you wish to combine. Most importantly, ensure that their sun exposure and water requirements are suitable for the same location. Leave enough space so that leaves do not obscure young shoots and to allow easy access to each plant for maintenance. These combinations are for composing the garden decor; they do not guarantee protection against pests or diseases. Adjust the arrangement after observing one growing season.
Plants to avoid
Perennial grown as an annual
Frequently asked questions
Your questions,answered.
How to successfully plant Gladiolus 'Dusky Twilight'?
Plant corms in spring, after the last frost, in warmed, well-drained soil. Choose a full sun location and prepare an area wide enough to space out the planting without crowding the future flower stalks. Place each corm in the correct orientation, then cover it to the depth indicated on its packaging. Water after planting and monitor moisture as the foliage develops. In a windy location, install supports before the stems grow tall. An accessible row makes it easier to install a soft tie and support the flower stalks without damaging the leaves or disturbing already rooted corms.
What light should I provide for Gladiolus 'Dusky Twilight'?
The recommended exposure is full sun. Observe the light in your chosen spot in the morning and afternoon, as the shade from trees or buildings changes throughout the day. Also consider nearby plants: their foliage can obscure a young planting as it develops. For container plants, place the pot where you can move it if conditions become too hot or too shady. Appropriate exposure must go hand in hand with suitable soil and watering. If you move a plant started indoors to the outdoors, gradually accustom it to garden conditions to avoid too abrupt a transition for young leaves.
How to adjust watering?
Water according to the actual soil moisture, taking into account rain, heat, and wind. Check below the surface before deciding on further watering: soil that is dry on the surface may still be moist at the root level. Direct the water to the base of the plant and let it penetrate, without keeping the plant in saturated soil. Containers generally require more frequent checks because they dry out faster. Make sure their drainage holes remain clear and empty any saucers that retain water. Also, adapt care to the plant's cycle: active growth and a dormant period do not require the same inputs.
What to plan for container growing?
Container gardening requires planning for the root ball size and the plant's final height. Choose a stable pot with drainage holes and a suitable planting medium. Leave enough space to allow for the recommended depth and spacing, rather than crowding plants to fill the pot immediately. Place the container in the recommended exposure and check the moisture regularly, especially in hot or windy weather. A pot is more exposed to temperature variations than planting directly in the ground. Therefore, from the outset, plan a wintering location compatible with the plant's needs and your region's climate.
What care should be planned after the growing season?
During flowering, water at the base when the soil dries out and remove faded flowers to keep the stalks tidy. For bouquets, cut when the first flowers begin to open, leaving several leaves on the plant. This foliage allows the corm to replenish its reserves. In Quebec, plan to remove corms from the ground before they freeze, then let them dry in a well-ventilated area. Remove damaged parts and store healthy corms in a dry, frost-free, breathable container. Keep each variety identified and check its condition during storage before the next planting.
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