We're offering you a 50 or 100 Gladioli Mixed Bulbs for £6.99, saving you up to 50% off Thompson and Morgan's's price of £13.99 (correct as of 20.01.2026).

Gladioli Mixed: Bold Colour for Your Summer Garden

Gladiolus, known as the 'sword lily,' is a classic perennial beloved for its upright spikes packed with funnel-shaped blooms. This mixed selection features a vibrant palette that enlivens garden borders, patio pots, and floral arrangements alike.

• Botanical name: Gladiolus hortulanus
• Mature height: Typically 80–100cm (31–39in)
• Flowering period: July to September
• Hardiness: Half-hardy perennial (protect from severe frost)

Why Choose Gladioli Mixed?

• Towering stems create vertical drama and structure in mixed borders.
• Diverse colours offer bold visual impact—ideal for mass planting or spot accents.
• Excellent cut flowers: Each stem lasts up to two weeks in a vase when cut as lower buds open.
• Low maintenance: Suitable for gardeners of all experience levels.

Growing Guide & Care Tips

• Planting time: March–May, after the last frost.
• Site: Full sun; sheltered from strong winds.
• Soil: Well-drained, moderately fertile soil (neutral to slightly acidic pH preferred).
• Spacing: Plant bulbs 10–15cm apart and 10–15cm deep.
• Watering: Water regularly during dry spells but avoid waterlogging.
• Lifting bulbs: In colder regions, lift bulbs after foliage dies back and store frost-free over winter.
• No pruning required: Simply remove faded flower spikes and allow foliage to die back naturally.

Garden Design Ideas & Companions

• Add height behind lower annuals like marigolds or zinnias.
• Create eye-catching bouquets with dahlias, lilies, or sunflowers.
• Suits cottage gardens, contemporary beds, or patio containers alike.

FAQs

• When is the best time to plant Gladioli bulbs?
  The ideal planting window is March through May, once the risk of frost has passed.
• How long do Gladioli take to flower?
  Blooms appear roughly 8–12 weeks after planting—expect vibrant colour from mid-summer onwards.
• Can I leave Gladioli bulbs in the ground over winter?
  If you garden in milder areas (UK zones 8–9), you may leave them in well-drained soil. In colder regions, lift and store bulbs after foliage dies back to prevent frost damage.