How to Grow Virginia Sweetspire Scarlet Flame

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Virginia Sweetspire Scarlet Flame

Itea virginica 'Scarlet Flame'

shrub

Virginia Sweetspire 'Scarlet Flame' is a compact deciduous shrub known for its striking deep red foliage that emerges in spring and intensifies throughout the season, culminating in brilliant scarlet fall color. It produces delicate, fragrant white flower spikes in late spring and maintains a neat, upright form reaching 3-4 feet tall. This cultivar is an improved selection specifically bred for enhanced foliage color compared to the species.

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Example Virginia Sweetspire Scarlet Flame timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Virginia Sweetspire Scarlet Flame

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Virginia Sweetspire Scarlet Flame

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Virginia Sweetspire Scarlet Flame dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun to part shade; best foliage color develops in full sun (6+ hours daily), though it tolerates partial shade
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Water: Moderate to high moisture requirement; prefers consistently moist soil but not waterlogged. Once established, tolerates both wet sites and periods of moderate drought better than many ornamentals. Water regularly during establishment and droughts.
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Spacing: 36 inches
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Days to maturity: Reaches mature form in 3-5 years; displays significant foliage color within the first season
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Planting depth: Plant at same depth as container; top of root ball flush with soil surface. Space 3 feet apart for mature size.

Soil

Type: Well-draining to moist loamy soil; tolerates wet conditions better than many shrubs
pH: 5.5-7.0
Amendments:
Compost or aged bark mulch to retain moisture Peat moss for acid-loving preference Organic matter to improve drainage in heavy clay soils

Growing Zones

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Thrives in zones 5-9, with best performance in zones 6-8

5a 5b 6a 6b 7a 7b 8a 8b 9a

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Growth Stages

1

Spring Emergence

3-4 weeks

New foliage emerges in deep red to burgundy tones in early spring, creating a striking display before most plants leaf out

Ensure consistent moisture during spring growth; apply balanced fertilizer in early spring. Prune out any winter damage.

2

Vegetative Growth & Flowering

6-8 weeks

Red foliage matures while maintaining burgundy undertones; delicate fragrant white flower spikes appear on branch tips in late spring (May-June)

Water regularly during dry spells. Deadhead spent flowers if desired, though leaving them allows for potential fruit set. Fertilize monthly during growing season.

3

Mid-Season Foliage

8-10 weeks

Foliage transitions from red to deep burgundy-red, maintaining color throughout summer; plant grows vigorously and develops fuller form

Maintain consistent moisture; mulch to regulate soil temperature. Prune back any wayward branches to maintain compact form.

4

Fall Color & Dormancy Preparation

6-8 weeks

Foliage transforms from burgundy to vivid scarlet and crimson in fall (September-October), creating peak ornamental display before leaf drop

Reduce watering as growth slows. Avoid late nitrogen fertilization which stimulates tender new growth. Prune in late winter while dormant.

5

Dormancy

3-4 months

Leaves drop completely, revealing attractive dark stems; plant is fully dormant and requires minimal care

Winter pruning can be done; remove dead or crossing branches. Protect from extreme cold wind if in zone 5. No watering needed unless drought conditions occur.

Companion Planting

Plan your garden →

Plant with:

Oakleaf Hydrangea Serviceberry (Amelanchier) Summersweet (Clethra) Fothergilla Azaleas (deciduous) Japanese Pieris Hostas Sedges (Carex species) Ferns Coral Bells (Heuchera)

Avoid planting near:

Plants requiring very dry soil conditions Shallow-rooted trees that compete for moisture Highly alkaline soil-preferring plants like lavender

Common Pests

  • Prune affected branches; use neem oil or insecticidal soap if severe. Maintain plant vigor through proper watering.

  • Increase humidity through regular misting; spray with water to dislodge mites; use miticides only if infestation is severe.

  • Prune heavily infested branches; apply horticultural oil in dormant season or growing season as appropriate.

  • Ensure good air circulation; remove infected leaves; apply fungicide if widespread. Avoid overhead watering.

Uses

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Landscape & Shade Garden Accent

Ornamental

Serves as an excellent multi-season ornamental shrub providing spring red foliage, summer interest, and dramatic fall scarlet coloring. Perfect for borders, shade gardens, and moist areas where many ornamentals struggle. [source]

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Pollinator & Bird Support

Wildlife

Fragrant white flowers attract bees and other pollinators in late spring; berries that develop from flowers provide wildlife food; dense branching provides nesting and shelter for small birds. [source]

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Cut Flowers & Arrangements

Household

Long-lasting foliage branches with white flower spikes or fall-colored foliage make excellent fresh cut flower arrangements and mixed bouquets for spring and autumn displays. [source]

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Honey Production

Culinary

While not directly consumable, the fragrant flowers are excellent nectar sources for honeybees, contributing to quality honey production in regions where Virginia Sweetspire is planted. [source]

Harvest Tips

Virginia Sweetspire is an ornamental shrub rather than a crop plant. Cut branches of foliage and flowers for indoor arrangements in late spring (peak flower time) or fall (peak color). Use sharp pruning shears and take 1/3 or less of the plant's growth. Branches will last 1-2 weeks in water indoors.

Fun Facts

  • 🌱 Virginia Sweetspire is one of the few native North American shrubs with truly red spring foliage, making 'Scarlet Flame' a particularly striking cultivar in temperate gardens.
  • 🌱 The fragrance of the white flower spikes is often compared to honey or vanilla, and the plant's genus name 'Itea' comes from the Greek word for 'willow,' reflecting its willow-like leaf shape.
  • 🌱 This shrub thrives in wet conditions that would kill most ornamental plants, making it an ideal choice for poorly drained sites, rain gardens, and native plantings near streams or pond edges.

Gardening Terms

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