Stevia (Stevia rebaudiana)

Stevia

Stevia rebaudiana

Its leaves hold natural sweetness without sugar, a gentle green alternative to artificial sweeteners. Herbaceous perennial; common names: sweet herb, sugar leaf.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; prefers 6–8 hours of direct sunlight daily for optimal leaf production and sweetness concentration
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Watering Water when the top 2–3 cm of soil dries out; avoid overwatering to prevent root rot and fungal growth
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Temperature Thrives in 18–27°C; tolerate light frost but best kept above 10°C to prevent dieback during cool periods
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Characteristics

  • Leaf: Opposite, lanceolate, glossy green leaves with serrated margins
  • Flower: Small white composite flowers in terminal clusters
  • Stem: Slender, green to reddish-brown, branching upright stems
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Care Guide

Watering

Keep soil consistently moist but not waterlogged to support active leaf growth

Fertilization

Diluted balanced liquid fertilizer every 4 weeks. Avoid over-fertilization, as excessive nitrogen can reduce leaf sweetness

Banana peel compost tea:Compost banana peels for 2–3 weeks to break down organic matter, steep in water for 24 hours, dilute 1:20 with water for root drenching to support leaf health and sweetness
Pruning
  • Pinch back young stem tips when plants reach 15 cm tall to encourage bushy, compact growth
  • Remove spent flower heads promptly to redirect energy to leaf production instead of seed development
  • Trim leggy or damaged stems in early spring to promote new, vigorous growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no known adverse effects from ingestion

Humans: Non-toxic to humans; leaves are safe for culinary use as a natural sweetener

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Garden Uses & Culture

Culture: Used as a natural sweetener in traditional Paraguayan medicine for centuries; symbolizes sustainable, sugar-free dietary choices

Usage: Culinary sweetener for beverages, baked goods, and sauces; ornamental herb in herb gardens