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Gladiolus Large Flowering 'Alexander the Great' (Spring)

Gladiolus

Gladiolus 'Alexander the Great' is a summer-flowering variety with tall, elegant spikes of pure white blooms arranged in vertical rows. The trumpet-shaped flowers contrast beautifully with deep green foliage, making it an excellent choice for cut arrangements and garden displays. This gladiolus grows up to 4 to 5 feet tall and thrives in full sun with well-drained soil. It requires regular watering but should not sit in overly wet conditions. Hardy in USDA zones 7 to 10, the corms should be lifted and stored in colder climates to ensure winter survival.

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Growing and Maintenance Tips for Gladiolus Large Flowering 'Alexander the Great' (Spring)

Planting: Plant corms in spring after the last frost, 4 to 6 inches deep and 6 inches apart, with the pointed end facing up. For continuous blooms, stagger plantings every 10–14 days until midsummer.
Location: Full sun is best. Choose a sheltered spot to protect tall flower spikes from wind.
Soil: Well-drained, sandy or loamy soil with a slightly acidic to neutral pH (6.0–7.0). Add compost or grit to improve drainage.
Watering: Water deeply after planting, then weekly during active growth. Mulch helps retain moisture and suppress weeds.
Temperature: Hardy in USDA zones 8–10. In colder zones, lift corms in fall and store in a cool, dry place.
Fertilization: Apply a balanced fertilizer (e.g., 5-10-10) at planting, then every 4–6 weeks during the growing season.
Pruning: Remove spent flower spikes to encourage more blooms. Allow foliage to die back naturally to feed the corm.
Staking: Tall varieties benefit from staking to prevent flopping. Insert supports early to avoid damaging roots.
Propagation: Lift and divide corms in fall. Replant healthy corms and save offsets for future seasons.
Pest & Disease: Watch for thrips, aphids, and fungal issues. Rotate planting sites and ensure good air circulation.