Spike Lavender (Lavandula latifolia)

Spike Lavender

Lavandula latifolia

Its sharp, camphor-scented blooms carry sun-warmed mountain calm. Evergreen aromatic shrub; common names: spike lavender, Portuguese lavender.

Full sun
1/week
Beginner
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Plant Needs

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Sunlight Requires full sun exposure for robust flowering; tolerates partial shade but produces fewer blooms
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Watering Allow soil to dry completely between waterings; avoid overwatering to prevent root rot
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Temperature Hardy to -10°C; prefers warm, dry summers; protect from prolonged heavy frost in cold regions
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Characteristics

  • Leaf: Narrow, gray-green linear leaves, densely covered in fine hairs to reduce water loss
  • Flower: Dense cylindrical spikes of pale violet to lavender blooms, held on stiff upright stems
  • Stem: Woody branching stems with silvery-green young growth that matures to brown, peeling bark
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Care Guide

Watering

Keep soil slightly moist during active growth; avoid waterlogging

Fertilization

Diluted balanced feed once every 4 weeks. Use low-nitrogen fertilizer to encourage bloom production rather than foliage growth

Eggshell powder topdress:Crush dried eggshells into fine powder; sprinkle lightly on soil surface; avoid direct contact with stems to prevent fungal growth
Pruning
  • Prune faded flower spikes immediately after blooming to encourage new growth and extended flowering
  • Trim back one-third of woody stems in late winter to maintain a compact, bushy habit
  • Remove dead or damaged branches to improve air circulation and reduce disease risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Contains linalool and linalyl acetate, causing vomiting, diarrhea, lethargy if ingested

Humans: Ingestion may cause mild gastrointestinal upset; undiluted essential oil can irritate skin and mucous membranes

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Garden Uses & Culture

Culture: Associated with calm and relaxation; widely used in aromatherapy products

Usage: Ornamental garden plant; source of camphor-rich essential oil for medicinal and cosmetic use