Summer Melon Hyssop (Agastache 'Summer Melon')

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Sunlight Full sun to partial shade; thrives in bright, direct sunlight for most of the day, with light afternoon shade tolerated in hot climates

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Watering Water deeply when the top 5 cm of soil is dry; avoid overwatering to prevent root rot

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Temperature Hardy to USDA zone 5; tolerates mild frost and summer heat up to 35°C

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Leaf: Opposite, lance-shaped, medium green leaves with serrated edges; aromatic when crushed
Flower: Dense terminal spikes of tubular, pale peach to creamy yellow blooms
Stem: Square, upright stems typical of the mint family

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Watering

Keep soil consistently moist but not waterlogged

Fertilization

Feed with balanced fertilizer once monthly. Discontinue fertilization in late autumn to prepare plants for dormancy

Banana peel compost tea：Soak fully composted banana peels in water for 24 hours; dilute 1:20 for root drench to support bloom production

Pruning

Deadhead spent flower spikes to encourage continuous blooming through the growing season
Cut back stems to 10 cm above soil level in late autumn to prepare for winter dormancy
Thin overcrowded clumps every 2–3 years to improve airflow and reduce disease risk

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Warning: this plant may be toxic.

Pets & Humans

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

Humans: Non-toxic to humans; foliage is safe for handling and occasional culinary use in small quantities

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Culture: N/A

Usage: Ornamental garden plant; attracts pollinators like bees and butterflies; aromatic foliage deters some pests