Hardy Begonia
Autumn Begonia
Grandis Begonia
Begonia Grandis
Flower Language
- unrequited love
- troubles of love
- lovely person
- delicate
Characteristics
Description
Hardy Begonia is a perennial bulbous plant from the Begoniaceae family, native to southern China and the Malay Peninsula, officially called Begonia grandis. Also known by alternative names like 'mutual love grass,' 'heartbreak flower,' and 'August spring,' it has been cultivated in Japan since ancient times. Its most distinctive feature is the asymmetrical heart-shaped leaves, with one side growing larger than the other, giving rise to the flower language meaning 'unrequited love.' Growing up to 70cm tall, it produces delicate pale pink flowers from summer to early autumn. The flowers are unisexual, with male flowers having 4 petals and female flowers having 5 petals. Unusually for Begonia species, it has cold hardiness and can overwinter outdoors in mainland Japan, adapting well to the Japanese climate. Preferring shade and being sensitive to direct sunlight, it's often cultivated under trees or on the north side of buildings, valued as understory planting in Japanese gardens. It has underground tubers and is herbaceous perennial, with above-ground parts dying back in winter but re-emerging in spring.
Trivia
- Only cold-hardy species in Begonia genus, can overwinter outdoors in Japan
- Asymmetrical leaves are evolutionary adaptation for improved photosynthesis efficiency
- Unique characteristic of unisexual flowers with different petal numbers
- Cultivated in Japan since Edo period with many garden varieties developed
Uses
Ornamental
- Understory planting in Japanese gardens
- Featured plant in shade gardens
- Indoor potted plant cultivation
Medicinal
- Roots and stems used medicinally in Chinese traditional medicine
- Folk medicine applications for anti-inflammatory and detoxification
Caution: Consult professionals before medicinal use.
Culinary
Generally not used for culinary purposes
Other
- Pressed flowers utilizing beautiful leaf shapes
- Foliage in floral arrangements
- Important role as shade plant in ecosystems
Toxicity
Toxicity Level: Moderate
Toxic Parts: Entire plant, Especially rhizomes
Symptoms: Contains oxalic acid; large quantities may cause oral and gastrointestinal irritation.