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How to Grow Crocosmia 'Solfatare'

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Crocosmia 'Solfatare'

Crocosmia × crocosmiiflora 'Solfatare'

flower

Crocosmia 'Solfatare' is a stunning ornamental perennial prized for its unique sulfur-yellow flowers and bronze-tinged foliage. This cultivar produces elegant, arching sprays of tubular blooms that attract hummingbirds and butterflies. It combines beautiful foliage color with long-lasting summer flowers, making it a standout addition to borders and containers.

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Example Crocosmia 'Solfatare' timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Crocosmia 'Solfatare'

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Crocosmia 'Solfatare' blooms

    Mid-to-late summer

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Crocosmia 'Solfatare' dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily; tolerates partial shade but blooms best in full sun
💧
Water: Moderate water needs; keep soil consistently moist during growing season (spring-summer), reduce watering in fall and winter. Drought-tolerant once established but performs better with regular moisture.
📏
Spacing: 8-12 inches apart inches
📅
Days to maturity: Not applicable; perennial that flowers 2-3 months after planting or in established clumps mid-summer
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Planting depth: Plant corms 2-3 inches deep; transplants at same depth as in nursery container

Soil

Type: Well-draining, fertile loamy soil
pH: 6.0-7.0
Amendments:
Compost peat moss or coco coir perlite for drainage organic matter

Growing Zones

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Zones 6-10; thrives best in zones 7-9 with reliable moisture and well-draining soil

6a 6b 7a 7b 8a 8b 9a 9b 10a 10b

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Growth Stages

1

Dormancy/Emergence

4-6 weeks in spring

Plant emerges from underground corms in spring as soil warms; narrow sword-like leaves with bronze-burgundy tones begin to unfurl

Do not plant corms until soil temperature reaches 60°F (15°C). Ensure good drainage to prevent corm rot. Mulch lightly after planting.

2

Vegetative Growth

6-10 weeks in late spring and early summer

Foliage expands with long, arching leaves displaying attractive bronze-burgundy coloration; plant builds energy reserves

Water regularly to keep soil moist but not waterlogged. Apply balanced fertilizer monthly. Remove any dead leaves. Foliage remains ornamental throughout season.

3

Flowering

6-8 weeks (typically July-September)

Produces tall, branching stems with delicate arching sprays of bright sulfur-yellow tubular flowers that open progressively upward

Deadhead spent flowers to encourage continued blooming and neater appearance. Support tall stems with stakes if needed in windy locations. Maintain consistent moisture.

4

Seed Development & Decline

4-6 weeks in fall

Flowers fade and seed pods develop; foliage begins to yellow and die back as plant enters dormancy

Allow flowers to remain for wildlife interest or deadhead for neatness. Stop deadheading 4-6 weeks before first frost to allow natural seed development. Reduce watering.

5

Dormancy

October through March

Foliage completely dies back; plant retreats underground as corms enter dormancy period

Cut back dead foliage to ground level. In cold zones (6-7), apply 2-3 inches of mulch to protect corms over winter. In zones 8-10, minimal protection usually needed. Stop watering.

Companion Planting

Plan your garden →

Plant with:

Daylilies Black-eyed Susans Salvia Verbena Ornamental grasses (Miscanthus, Panicum) Coreopsis Rudbeckia Eryngium Achillea Sedum

Avoid planting near:

Potatoes Other Crocosmia with significantly different bloom times (to avoid competition) Excessively wet-growing plants (like cannas in boggy areas)

Common Pests

  • Spray with water to dislodge; use neem oil or insecticidal soap if severe; ensure adequate air circulation

  • Spray with water; apply insecticidal soap or neem oil; encourage beneficial insects like ladybugs

  • Remove affected flowers; apply neem oil or spinosad; avoid overhead watering

  • and

    Hand-pick; apply copper barriers; use beer traps; encourage predatory beetles; avoid excess mulch near stems

  • Hand-pick; plant deterrent plants nearby; use row covers during vulnerable periods; parasitic wasps provide natural control

Uses

🍳

No culinary use

Culinary

Crocosmia 'Solfatare' is not edible and has no culinary applications. [source]

🏠

Cut flowers and floral arrangements

Household

The graceful, arching yellow flower sprays are excellent for cutting and make stunning floral arrangements, adding height and movement to bouquets. The bronze foliage also provides attractive textural contrast in arrangements. [source]

🦋

Pollinator attraction

Wildlife

Crocosmia 'Solfatare' is a superb nectar source that attracts hummingbirds, butterflies, and other pollinators throughout its long flowering season. The tubular yellow flowers are particularly attractive to hummingbirds. [source]

🎨

Dried flower arrangements

Craft

The flower stems and seed pods can be dried for use in dried arrangements, wreaths, and craft projects. Allow flowers to dry on the plant or cut and hang-dry in a cool, dark location. [source]

🏠

Garden ornament and landscape design

Household

The combination of bronze-tinged foliage and bright sulfur-yellow flowers makes this cultivar an exceptional ornamental plant for borders, cutting gardens, containers, and mixed perennial gardens, providing color and movement throughout mid to late summer. [source]

Harvest Tips

Crocosmia 'Solfatare' is grown as an ornamental perennial, not harvested. However, flowers can be cut for floral arrangements in early morning when stems are hydrated. Cut stems just above a leaf node or branching point. The arching flower sprays are excellent for fresh arrangements; remove lower foliage before placing in water. Flowers last 7-10 days in a vase.

Fun Facts

  • 🌱 Crocosmia 'Solfatare' gets its name from the Italian word 'solfatara,' referring to areas of sulfurous volcanic activity, reflecting the distinctive sulfur-yellow flower color
  • 🌱 The unique bronze-tinged foliage distinguishes this cultivar from other yellow-flowered Crocosmia varieties and becomes more intensely colored in cooler temperatures and full sun
  • 🌱 Crocosmia corms can multiply underground, creating denser clumps over time; established plantings may need division every 3-4 years to maintain vigor and prevent overcrowding

Gardening Terms

New to gardening? Learn about terms used in this guide:

Cultivar Deadhead Full Sun Mulch Partial Shade Perennial
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