How to Grow Boughton Blue

Boughton Blue

Veronica teucrium 'Boughton Blue'

flower

Boughton Blue is a compact herbaceous perennial cultivar of germander speedwell featuring bright blue flowers on low, spreading mounds of fine foliage. It blooms prolifically in late spring through early summer and is excellent for groundcover, edging, and rock gardens. This hardy, low-maintenance plant attracts pollinators and thrives in sunny locations with well-draining soil.

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Example Boughton Blue timeline · Pittsburgh, PA (Zone 6b)

Plant Boughton Blue
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
First Boughton Blue blooms
Around Jun 16

≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Boughton Blue dates for your own zip code.

Growing Conditions

☀️

Sun: Full sun, 6-8 hours daily minimum

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Water: Low to moderate water needs once established. Water regularly during first season to establish roots. Drought tolerant in mature plants; avoid overwatering which promotes rot and disease.

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Spacing: 12 inches

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Days to maturity: 60-90 days to first flowers

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Planting depth: Plant transplants at same depth as container; sow seeds on surface (light-dependent germination)

Soil

Type: Well-draining sandy or gravelly soil

pH: 6.0-7.5

Amendments:

Coarse sand or grit for drainage Compost for structure improvement Avoid heavy clay amendments

Growing Zones

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Thrives in zones 4-8, cold hardy to zone 3

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

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Growth Stages

Seedling

3-4 weeks

Tiny seedlings with fine cotyledons emerge slowly. Very delicate with minimal foliage development.

Keep soil moist but not waterlogged. Provide bright light and protect from strong winds. Bottom heat (65-70°F) accelerates germination.

Establishment

4-6 weeks

Young plants develop fine, feathery leaves and begin to spread horizontally. Low rosettes form with visible branching.

Gradually harden off seedlings. Ensure excellent drainage to prevent damping-off. Avoid fertilizer; low nitrogen maintains compact habit.

Vegetative Growth

4-8 weeks

Dense, spreading mounds of fine-textured green foliage form, reaching 12-15 inches wide and 4-6 inches tall.

Minimal care needed. Water during dry spells. Deadhead spent flowers to encourage continuous blooming and maintain compact form.

Flowering

8-12 weeks

Abundant spikes of bright blue to blue-violet flowers cover the plant in profusion. Flowers have white eyes and dark centers.

Deadhead regularly to extend bloom period. Do not fertilize heavily as this reduces flowering. Water at soil level, not foliage.

Post-Bloom & Dormancy

Variable (seasonal)

Flowering diminishes in summer heat. Foliage remains attractive but may bronze slightly. Plant enters dormancy in fall/winter.

Cut back spent stems to 2-3 inches in fall or early spring. Avoid winter mulch in wet climates. Divide every 3-4 years.

Companion Planting

Plan your garden →

Plant with:

Lavender Catmint (Nepeta) Lamb's ear (Stachys) Sedum Dianthus Santolina Germander Thyme

Avoid planting near:

Moisture-loving plants like hostas and ferns Heavy feeders that require frequent fertilization Tall plants that shade it entirely

Common Pests

Ensure good air circulation. Avoid overhead watering. Apply fungicide if severe; sulfur sprays acceptable for organic gardening.
Spray with water to increase humidity. Use insecticidal soap or neem oil if infestation occurs.
and
Remove debris where they hide. Use beer traps or diatomaceous earth. Hand-pick early morning if necessary.
Improve soil drainage immediately. Divide and replant in fresh, well-draining soil. Reduce watering frequency.

Uses

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Cut flowers and arrangements

Craft

Delicate blue flower spikes provide color and texture in fresh or dried arrangements. Long vase life (7-10 days) makes them suitable for cutting gardens. [source]

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Pollinator magnet

Wildlife

Attracts bees, butterflies, and other beneficial insects throughout its extended bloom period. Excellent for supporting early-season pollinators. [source]

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Groundcover and edging

Household

Spreads to form attractive living borders, defines garden edges, and fills gaps between pavers or rocks with minimal maintenance. [source]

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Edible flower garnish

Culinary

Small blue flowers are mildly bitter and can garnish salads and desserts for visual appeal. Use sparingly as a decorative element. [source]

Harvest Tips

Boughton Blue is not harvested for consumption. Cut flowers for arrangements in early morning when dew dries but before heat peaks. Deadhead spent flower spikes just below the flowers to encourage reblooming. Cut back entire plant to 2-3 inches in fall or early spring.

Fun Facts

🌱 Boughton Blue is named after Boughton Monchelsea in Kent, England, where it was selected as a superior cultivar of germander speedwell.
🌱 This plant was once used in traditional herbal medicine as 'veronica' for its supposed healing properties, though modern herbalists have largely replaced it with more potent species.
🌱 The flower's blue color develops gradually; newly opened flowers appear lighter and deepen over several hours, creating a multi-toned appearance on the plant.

Gardening Terms

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

Cultivar Deadhead Full Sun Germination Mulch Perennial

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