Bigroot Geranium (Geranium macrorrhizum)

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Sunlight Partial sun to full shade; tolerates gentle morning direct sun but avoids harsh midday summer rays

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Watering Water deeply when top 2–3 cm of soil is dry; drought-tolerant once established

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Temperature Hardy to -20°C; withstands mild summer heat without additional stress

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Leaf: Round, lobed, fuzzy leaves with aromatic scent when bruised
Flower: Pink to pale magenta, five-petaled blooms in loose terminal clusters
Stem: Trailing, hairy stems that root at nodes to spread horizontally

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Watering

Keep soil evenly moist during active growth periods

Fertilization

Apply diluted balanced feed once monthly. Discontinue fertilization in late summer to prepare plants for dormancy

Eggshell powder topdress：Crush dried eggshells to fine powder; sprinkle 1 tsp per plant every 3 months; work lightly into topsoil to avoid runoff

Pruning

Deadhead spent blooms to encourage extended flowering through early summer
Trim back leggy stems in early spring to promote bushier, compact growth
Remove yellowed or damaged foliage to maintain a tidy appearance and improve airflow

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic; no adverse effects from ingestion or contact

Humans: Non-toxic to humans; foliage is safe for handling and accidental ingestion

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Culture: N/A

Usage: Groundcover for erosion control, rock garden plant, aromatic foliage for sensory gardens