Saltwort (Salsola soda)

Saltwort

Salsola soda

It thrives in salty soils, a hardy coastal survivor. Herbaceous annual; common names: saltwort, barilla plant.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Requires full sun exposure; tolerant of coastal salt spray and intense, direct sunlight
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Watering Highly drought-tolerant; water only when the top 5–7 cm of soil is completely dry to avoid root rot
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Temperature Tolerates mild frost down to 5°C; thrives best in warm coastal temperatures between 15–30°C
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Characteristics

  • Leaf: Succulent, linear, cylindrical leaves with a waxy coating to retain moisture and excrete excess salt
  • Flower: Small, inconspicuous greenish-white flowers clustered in leaf axils
  • Stem: Erect, branching stems with a reddish tinge as plants mature
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Care Guide

Watering

Water sparingly when soil is fully dry; avoid overwatering

Fertilization

No regular fertilization required. Tolerates nutrient-poor soils; avoid high-nitrogen fertilizers that may reduce salt tolerance

Eggshell powder topdressing:Sprinkle finely crushed, dried eggshell powder around the base of plants to add calcium without altering soil salinity; avoid burying deep to prevent root disturbance
Pruning
  • Remove spent flower heads to prevent unwanted self-seeding if desired
  • Trim leggy stems in mid-summer to maintain compact, bushy growth
  • Clear dead foliage at the end of the growing season to prepare beds for next year
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxic effects for humans; young shoots are edible when cooked

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Garden Uses & Culture

Culture: N/A

Usage: Historically harvested to produce soda ash for glassmaking; young shoots are edible when cooked