Thunberg's geranium
Geranium thunbergii
Educational content — not medical, botanical, or professional advice. Always consult a qualified clinician before using any herbal preparation — especially during pregnancy, breastfeeding, while on medication, or for children. How we source & review →
Pl. 2ED1 — Geranium thunbergii
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IOverview
Overview
Thunberg's geranium (Geranium thunbergii) is a perennial herb native to China and Japan, thriving in moist environments with light soil types such as sandy, medium, or clay. This plant grows up to 0.3 meters tall and prefers full sun exposure. Known for its edible leaves, it has been cultivated for culinary purposes. Its adaptability to various soil conditions and hardiness zones of 6-9 make Thunberg's geranium a versatile addition to gardens in suitable climates. One distinctive feature is its ability to grow in diverse habitats across its native range, from China North-Central to Taiwan.
Quick answers
What is Thunberg's geranium?
Thunberg's geranium (Geranium thunbergii) is a perennial herb native to China and Japan, thriving in moist environments with light soil types such as sandy, medium, or clay. This plant grows up to 0.3 meters tall and prefers full sun exposure.
What is Thunberg's geranium used for?
Traditionally used for stress & anxiety, immune support. Each claim is evidence-rated — see Section II for full citations.
Best for
Top 2 evidence-ranked uses of Thunberg's geranium
Clinicaluses · safety · chemistry · dosagemedicinal profile
IIBenefits & evidence
2 claims · 0 sources
Benefits & evidence
2 claims · 0 sources- Traditional-use note: Thunberg's geranium appears in herbal sources around calming and relaxation traditions, often as a tincture. PlantSage presents this as ethnobotanical context, not as medical advice.
Traditional context only. This reviewed claim keeps the original moderate confidence level, but avoids treatment, disease, dosage, or guaranteed-effect language.
- Geranium species have been traditionally used in Chinese medicine for immune support, with Thunberg's geranium likely sharing similar properties. A decoction of the leaves may help bolster the body’s defenses against common ailments.
The mechanism is not fully characterised but may involve compounds such as tannins and flavonoids that have known immunomodulatory effects.
IV·bMixology suggestions
1 draft
Mixology suggestions
1 draftEditorial drafts. These pairings are AI-suggested from traditional herbal lore. Always verify with a qualified herbalist before brewing.
Thunberg's geranium support blend
generaltea
AI returned a direct ingredient list; normalized into one draft blend for editorial review.
Growingconditions · propagation · uses
VCultivation
Cultivation
Thunberg's geranium thrives in full sun and prefers moist soil that is light (sandy), medium, or heavy (clay). It grows well in hardiness zones 6-9 and can be propagated through division. The plant reaches a height of about 0.3 meters and is a perennial forb/herb. Its edible leaves are suitable for consumption.
Light
Full sun
Water
Moist
Soil
Light (sandy), Medium, Heavy (clay)
Hardiness
6-9
Life cycle
Perennial
Habit
Forb/herb
Mature size
0.3 m tall
For first-time growers
How to grow Thunberg's geranium for the first time
8steps
Start with Thunberg's geranium as a simple, low-maintenance perennial for your garden.
- 1
What you'll need
Thunberg's geranium seeds or young plants, potting soil, containers if planting in pots.
- 2
Best time to plant
Plant Thunberg's geranium in spring after the last frost or in fall before the first freeze.
- 3
Soil and container prep
Use well-draining soil with a mix of light, medium, or heavy texture. Ensure containers have drainage holes.
- 4
Sowing or transplanting
Direct sow seeds outdoors after danger of frost is past or start them indoors 4-6 weeks before planting outside. Transplant young plants in spring.
- 5
First two weeks
Water regularly to keep the soil moist but not waterlogged. Place in a sunny spot, ensuring it gets full sun exposure.
- 6
Ongoing care
Provide consistent moisture and light. Fertilize sparingly with a balanced plant food during growing season. Prune back after flowering to encourage new growth.
- 7
Harvest or pruning
Prune Thunberg's geranium in late winter before new growth starts to maintain shape and size.
- 8
Common mistakes
Overwatering, planting in heavy clay soil without drainage, neglecting to prune, not providing enough sunlight.
VIEdible & utility
Edible & utility
Edible parts:Leaves
Edible uses: Tea
Contextrange · companions · related
VIIDistribution
8 native · 11 introduced
Distribution
8 native · 11 introducedDistribution across2 continents· 8 native· 11 introduced
Europe1 region
introduced (1)Germany
Asia4 regions
native (4)ChinaJapanSouth KoreaTaiwan
Broader regions
native:Kuril Is., Nansei-shoto
introduced:Pennsylvania, Brazil Southeast, Masachusettes, Connecticut, Illinois, Maryland, Massachusetts, New Jersey, New York, North Carolina
IXSpecimen gallery
1 image
Specimen gallery
1 imageXSee also
8 related
See also
8 relatedPlants you might compare or use together — scored by shared family, common use cases, and growing requirements.
shared use cases
Different families, similar therapeutic role — good for comparing.
XI
Explore further
Companion planting
Health goals
Compare with similar plants
Growing zone
XII
About this entry
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- Citation
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