Garden Nasturtium (Tropaeolum majus)

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Sunlight Full sun to partial shade; prefers cool, bright conditions and tolerates light afternoon shade in hot climates

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Watering Water deeply when the top 2 cm of soil is dry; avoid overwatering to prevent root rot and foliage overgrowth

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Temperature Thrives in 10–22℃; tolerates short periods of light frost down to -2℃

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Leaf: Circular, shield-shaped (peltate) with long petioles; bright green, slightly waxy texture
Flower: Trumpet-shaped, 3–5 cm wide; available in orange, yellow, red, or cream hues
Stem: Succulent, trailing or climbing with tendril-like growth for anchorage

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Watering

Keep soil evenly moist; reduce watering slightly during extreme heat to avoid wilting

Fertilization

No regular fertilization needed; avoid high-nitrogen feeds. Rich soil will promote lush foliage at the expense of flowering

Banana peel tea：Soak chopped banana peels in water for 24 hours; dilute 1:10 for root drench to avoid overfeeding

Pruning

Deadhead spent blooms regularly to encourage continuous flowering throughout the growing season
Trim overgrown trailing vines to maintain compact shape and improve airflow
Remove yellowing or damaged leaves to reduce fungal disease risk

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Warning: this plant may be toxic.

Pets & Humans

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

Humans: Non-toxic; petals and leaves are edible with a peppery, watercress-like flavor

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Culture: Symbolizes patriotism in some European regions; often used in edible floral arrangements

Usage: Edible petals and leaves for salads, garnishes, or infused vinegars; ornamental ground cover or climbing trellis plant