Gladiolus Large Flowering Blend (Pack of 30)

Gladiolus x hortulanus Large Flowering Blend

Gladiolus Large Flowering Blend transforms summer gardens with bold, vertical spikes bursting in vibrant shades of red, orange, yellow, pink, purple, and white. Known for their tall stature and trumpet-shaped blooms, these large gladiolus bulbs are perfect for gardeners seeking high-impact color and elegant structure. Whether you're designing a backyard border, cutting garden, or statement container planting, this blend provides long-lasting beauty and reliable performance during the summer season.

• USDA Zones: 8–10
• Bloom Time: early summer
• Height: 52"
• Planting depth/Spacing: 5"/ 4–5"
• Deer Resistant: no
• Sun Requirements: full sun

To learn more about the gladiolus’s upkeep and maintenance, please visit our blogs and videos below.

With its impressive height and striking floral spikes, this mix offers exceptional visual appeal. The extended gladiolus bloom time begins in early summer and can be prolonged by planting corms every two weeks. Each tall stem holds multiple blossoms that open sequentially from bottom to top, ensuring continuous color and interest. These blooms are prized for floral arrangements, where their form and texture make them a designer favorite.

Key Characteristics and Benefits of Growing Gladiolus Large Flowering Blend

• Colorful Summer Impact: Offers a dazzling array of hues ideal for seasonal flower beds and mass plantings.
• Excellent Cut Flowers: Strong stems and vibrant blooms are ideal for professional and homegrown bouquets.
• Bulk Availability: Available in gladiolus bulbs bulk for large-scale projects or cutting garden rows.
• Pollinator Friendly: Attracts bees and hummingbirds with its vivid, open-faced flowers.
• Vertical Garden Drama: Perfect for adding architectural height and bold color to sunny garden beds.

Growing Gladiolus Large Flowering Bulbs

Plant these bulbs in full sun after the danger of frost has passed. Insert bulbs 5 inches deep and space them 4–5 inches apart. For a longer bloom season, stagger plantings every 10–14 days into early summer. Use well-drained, fertile soil and mulch lightly to retain moisture and reduce weeds.

Climate and Soil Requirements

Best suited for USDA zones 8–10, gladiolus prefer full sun and rich, loose soil. In cooler zones, bulbs should be lifted and stored indoors after the foliage has died back in the fall.

Sunlight and Watering

Gladiolus thrive in full sun. Water regularly during active growth and blooming, ensuring the soil remains moist but not soggy. Avoid overhead watering to reduce disease risk on leaves and flowers.

Care and Maintenance

Stake tall stems to prevent lodging in windy areas. Deadhead spent blooms to encourage continued flowering. After blooming, allow the foliage to yellow and wither naturally to feed the corms for next season’s growth.

Landscape Uses for Gladiolus Large Flowering Blend

Ideal for garden borders, cottage-style beds, and cutting garden rows, gladiolus bring strong vertical lines and lush color to summer landscapes. Pair them with dahlias, sunflowers, or salvia for eye-catching seasonal combinations.

Multiple Trusted Brands at Grow Organic

At Grow Organic, we offer Gladiolus Large Flowering Blend from multiple trusted premium brands. This allows our customers to choose from a wide range of bulb sizes, colors, and quality standards—offering flexibility, variety, and the assurance of excellence for every garden style.

Need step-by-step growing instructions? Visit our comprehensive Flower Bulb Growing Guide to learn everything from planting depth to seasonal care tips.

Explore even more spring favorites in our Annual Flower Seeds Collection.