How to Grow Spike Speedwell
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Spike Speedwell
Veronica spicata subsp. spicata
flowerSpike speedwell is a compact, herbaceous perennial prized for its dense spikes of small, colorful flowers that bloom throughout summer. The plant forms an upright mound of narrow, lance-shaped foliage and is highly valued in cottage gardens, borders, and rock gardens. It attracts pollinators and provides continuous color with minimal maintenance.
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Example Spike Speedwell timeline · Pittsburgh, PA (Zone 6b)
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Plant Spike Speedwell
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Spike Speedwell blooms
Mid-to-late summerBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8, with best performance in cooler climates; tolerates heat but prefers moderate temperatures
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Seedling
2-3 weeksTiny seedlings with cotyledons and first true leaves appearing; very delicate and small
Keep soil consistently moist but not waterlogged; provide bright light and good air circulation to prevent damping off. Thin or transplant when first true leaves appear.
Vegetative Growth
4-6 weeksYoung plant developing rosette of narrow, lance-shaped leaves; bushy and compact growth pattern
Maintain moderate moisture; pinch back growing tips once to encourage bushiness. Fertilize every 2-3 weeks with balanced fertilizer. Gradually acclimate to outdoor conditions if started indoors.
Bud Formation
2-3 weeksDense flower spikes begin to form at branch tips; buds become visible along the spike structure
Continue regular watering; reduce nitrogen fertilizer and increase phosphorus to promote flowering. Ensure adequate sunlight for color development.
Flowering
8-12 weeks (summer through early fall)Tall, dense spikes of small flowers open sequentially from bottom to top in shades of blue, purple, pink, or white
Deadhead spent flowers regularly to encourage continuous blooming and prevent self-seeding. Water during dry periods. Stake taller varieties if needed in windy locations.
Seed Development & Dormancy
4-8 weeks into winterFlowers fade; seed pods develop; foliage may begin to yellow in fall; plant enters dormancy
Allow some flowers to remain for seed production and wildlife food, or deadhead to redirect energy to roots. Cut back dead foliage in late fall or early spring. Mulch lightly to protect crown over winter.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Ensure good air circulation; avoid overhead watering; apply sulfur dust or neem oil if needed; choose resistant varieties; remove affected leaves promptly
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Increase humidity; spray with water to dislodge; use miticide or horticultural oil if infestation is severe
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and
Remove debris and mulch away from plant base; hand-pick; use copper barriers or slug bait; encourage natural predators
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Strong water spray to remove; insecticidal soap; encourage beneficial insects; neem oil for heavy infestations
Uses
Edible Flower Garnish
CulinaryThe delicate flower spikes can be used as a colorful garnish on salads and desserts, adding mild herbal flavor and visual appeal to dishes. [source]
Herbal Tea & Traditional Medicine
MedicinalVeronica species have been used in traditional European herbalism to make soothing teas with mild diuretic and anti-inflammatory properties, though scientific evidence is limited. [source]
Cut & Dried Flowers
HouseholdThe tall flower spikes are excellent for fresh and dried flower arrangements, bouquets, and floral designs. They dry well and retain color for long-lasting displays. [source]
Pollinator Attraction
WildlifeThe abundant spikes of small flowers are highly attractive to bees, butterflies, and other beneficial insects, making spike speedwell invaluable for supporting pollinator populations. [source]
Ornamental Landscaping
CraftOne of the finest plants for cottage gardens, perennial borders, rock gardens, and alpine troughs; its vertical form and extended bloom time provide structure and color throughout the growing season. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Spike speedwell is not harvested for culinary use. Cut stems for fresh flower arrangements in mid-morning when fully open but still fresh. Deadhead throughout the blooming season by pinching or cutting spent flower spikes just below the faded flowers to encourage more blooms and tidy appearance. Allow some flowers to remain for seed if you want self-seeding; seeds mature 4-6 weeks after flowering.
Fun Facts
- 🌱 Veronica spicata is sometimes called 'Speedwell' because of an old herbalist's belief that the plant helped travelers move quickly and safely on their journeys.
- 🌱 The dense flower spikes can produce hundreds of tiny flowers, with blooms opening sequentially from bottom to top, often extending the flowering period for 2-3 months.
- 🌱 Spike speedwell is native to Eurasia and is completely hardy in cold climates, thriving where many ornamental plants struggle in harsh winters.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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