How to Grow Bearded Iris 'Edith Wolford'

Bearded Iris 'Edith Wolford'

Iris germanica 'Edith Wolford'

flower

'Edith Wolford' is a stunning tall bearded iris (TB) cultivar featuring bright yellow standards with lavender-blue falls, creating a striking bicolor display. This award-winning variety is renowned for its vigorous growth, prolific blooming, and excellent garden performance. It typically reaches 28-32 inches tall and produces multiple flower spikes per rhizome.

Growing Conditions

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Sun: Full sun, 6-8 hours daily minimum; 8+ hours preferred for best blooming

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Water: Moderate water needs; drought-tolerant once established. Water deeply during spring growth and blooming season. Reduce watering after bloom cycle. Avoid overhead watering to prevent rhizome rot and fungal issues.

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Spacing: 18-24 inches between rhizomes inches

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Days to maturity: Mature flowering plant by year 2-3 after division

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Planting depth: Rhizome should be at or slightly above soil surface with roots spread downward into 1-2 inches of soil

Soil

Type: Well-draining, moderately fertile loamy or sandy soil

pH: 6.8-7.5

Amendments:

Coarse sand or grit if soil is heavy clay Compost for organic matter (minimal) Bone meal at planting Avoid fresh manure

Growing Zones

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Thrives in zones 3-9, with best performance in zones 4-8

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

Growth Stages

Dormancy/Planting

Summer-early fall

Rhizomes are dormant and ready for planting in summer or early fall

Plant rhizomes with leaves/fans intact when possible. Avoid burying; expose top of rhizome. Water in well but allow soil to dry between waterings.

Root Establishment & Vegetative Growth

6-8 weeks

New roots develop and foliage emerges; plant builds vigor over fall and winter

Maintain light watering. Remove any diseased leaves. Mulch lightly in cold zones. In spring, remove old, damaged foliage from previous year.

Budding & Pre-Bloom

4-6 weeks

Flower spikes emerge and buds develop in spring; characteristic rhizomatous growth visible

Increase watering as growth accelerates. Apply balanced fertilizer (low nitrogen) in early spring. Remove weeds carefully to avoid rhizome damage.

Flowering

2-4 weeks (mid-spring, typically late April-May in most zones)

Stunning yellow and lavender-blue flowers open sequentially on each spike; multiple spikes typically present

Enjoy blooms; deadhead spent flowers if desired (not necessary). Allow some flowers to complete their cycle for seed production. Monitor for pests.

Post-Bloom & Summer Dormancy

8-12 weeks through summer

Foliage continues growing but flowers fade; plant prepares for division and next season

Cut flower spikes below base when fully finished. Maintain foliage health through summer for energy storage. Reduce watering gradually. Can divide rhizomes 4-6 weeks after bloom ends.

Companion Planting

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Plant with:

Catmint (Nepeta) Russian sage (Perovskia) Salvia Coreopsis Alliums Peonies Daylilies Lavender Sedum

Avoid planting near:

Plants requiring frequent overhead watering Heavy feeders that compete for nutrients Iris varieties susceptible to same diseases (for disease prevention) Plants preferring acidic soil (pH below 6.5)

Common Pests

Ensure excellent drainage, avoid overwatering, remove and destroy infected rhizomes, disinfect tools, improve air circulation
Remove affected foliage, improve air circulation, avoid overhead watering, apply fungicide if severe
Remove dead foliage in fall, watch for entry holes in spring, use pheromone traps, apply insecticide at soil line in early spring, manually extract borers if found
Spray with water to dislodge, increase humidity around plants, apply miticide if severe
and
Remove hiding places, hand-pick, use copper barriers, apply slug bait if needed

Uses

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Ornamental use (not culinary)

Culinary

While bearded iris petals are technically edible and have been historically used to decorate cakes, 'Edith Wolford' is primarily grown as an ornamental cut flower and garden specimen rather than a culinary ingredient. [source]

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Cut flower arrangements

Household

Excellent long-lasting cut flower for fresh arrangements and floral design. The striking yellow and blue color combination makes it a standout in bouquets and formal flower displays. [source]

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Iris rhizome powder (historical cosmetic)

Household

Historically, iris rhizomes were used to make orris powder for perfumery and cosmetics. While 'Edith Wolford' blooms are prized ornamentally, traditional iris rhizome products come from specific species like I. pallida. [source]

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Pollinator support

Wildlife

Bearded iris flowers attract bees and other pollinators, providing early-season nectar when other sources are limited. The distinctive beard and landing platform help guide pollinators to the flower center. [source]

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Garden design and landscape color

Craft

'Edith Wolford' is exceptional for creating color contrast in perennial borders, cottage gardens, and formal iris collections. Its reliable blooming and striking bicolor form make it a cornerstone plant in garden design. [source]

Harvest Tips

Cut iris flowers for arrangements in early morning when buds are just opening or flowers are freshly opened. Cut stems at base, leaving foliage intact on plant. Remove 1-3 stems per rhizome to avoid weakening the plant. Flowers last 5-7 days in a vase with fresh water. Leave some flowers on plant to mature for vegetative strength.

Fun Facts

🌱 'Edith Wolford' won the Dykes Medal in 1985, one of the highest honors in iris breeding and hybridization, recognizing it as an outstanding tall bearded iris variety.
🌱 Bearded irises have a distinctive fuzzy 'beard' on the falls (drooping petals) that serves as a landing platform and nectar guide for pollinators—a feature unique to this iris type.
🌱 Iris rhizomes are among the longest-living perennial garden plants; a well-established 'Edith Wolford' clump can thrive and bloom prolifically for 10-15+ years with minimal maintenance.

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