Sweet Alyssum (Lobularia maritima)

Sweet Alyssum

Lobularia maritima

Tiny clustered blooms carry honeyed fragrance, softening garden edges. Low-growing ornamental annual; common name: sweet alyssum.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates coastal salt spray and light afternoon shade in hot climates
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Watering Water when the top 2 cm of soil dries out; avoid overwatering to prevent root rot
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Temperature Hardy to light frosts; thrives at 15–25°C; avoid prolonged exposure to temperatures above 30°C
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Characteristics

  • Leaf: Narrow, linear to spatulate gray-green foliage with fine hairs
  • Flower: Tiny four-petaled blooms in dense clusters; colors include white, pink, and purple
  • Stem: Slender, branching, prostrate stems that spread to form a low mat
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Care Guide

Watering

Keep soil evenly moist; water deeply during extended dry spells

Fertilization

Diluted balanced liquid feed every 2 weeks. Discontinue fertilization in late summer to prepare for dormancy

Banana peel tea:Soak 1 peeled banana in 4 liters of water for 24 hours; strain and use to water plants directly to boost flowering
Pruning
  • Deadhead spent flower clusters regularly to encourage continuous blooming
  • Trim leggy stems in mid-summer to promote compact, bushy growth
  • Remove yellowed or damaged foliage to maintain plant health and airflow
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic; no risk of poisoning for cats

Humans: Non-toxic to humans; no known adverse effects from ingestion or contact

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Garden Uses & Culture

Culture: Symbolizes sweetness and beauty; often used in wedding bouquets and memorial plantings

Usage: Ornamental ground cover; attracts pollinators including bees and butterflies