We have been purchasing our bulbs from A.D.R. for many years now. As a contractor, the process to order bulbs for many different clients is easy and seamless. The website is a wonderful tool that we refer to quite often for product information, photos, and combination ideas. Our bulbs always arrive on time and wonderfully organized to make our installation much more efficient . The product is top notch and leaves our customers with wanting more and more each season.

Ashley Marrin , Bret-Mar Landscape

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Gladiolus Large Flowering 'Blue Isle' (Ships in Spring)

Gladiolus

Gladiolus 'Blue Isle' is a striking variety with deep blue-purple blooms that create a dramatic display. The flowers, measuring about 3 to 4 inches across, are arranged along one side of sturdy stems, with 10 to 12 florets opening at a time. This gladiolus grows 36 to 48 inches tall and thrives in full sun with well-drained soil. Blooming from mid to late summer, it is an excellent choice for borders, bouquets, and cut-flower arrangements. Hardy in USDA zones 3 to 10, the corms should be lifted and stored in colder climates.

Description	Price
Bin Box of 100 Bulbs, Size 12+	$31.40
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10 Retail Packages of 10 Bulbs, Size 12/14 cm	$36.00
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Bulk Tray of 500 Bulbs, Size 12+	$140.00
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Growing and Maintenance Tips for Gladiolus Large Flowering 'Blue Isle' (Ships in 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.