Hosta sieboldiana (Hook.) Engl.
Hosta sieboldiana is a perennial.
Hosta sieboldiana was already described and the name validly published by William Jackson Hooker. It was Heinrich Gustav Adolf Engler, however, who reclassified it into todays valid botanical systematics .
The perennials have a stemless growth and reach heights of 60 to 100 centimetres. The plants reach a width of 80 to 90 centimetres.
Hosta sieboldiana is deciduous. The fern-green, simple leaves are basal. They are ovate and petiolate with entire margins and parallel venation. The leaves are around 40 to 50 centimetres large and have a glabrous surface. They turn an attractive yellow in autumn.
Flowers and Fruits
Hosta sieboldiana produces racemes of light-purple campanulate flowers in June. The plants are hermaphroditic.
The perennials produce green loculicidal capsules from summer to autumn.
Hosta sieboldiana is native to Japan.
The perennials prefer a half-shady to shady situation on moist soil. The substrate should be comparatively rich with a pH between 6,5 and 7,5. The plants prefer sandy-loamy or sandy clay soil. They tolerate temperatures down to -18Â°C (USDA zone 7). The plants prefer a sheltered position. The plants are suited for the shore areas of and in artificial standing bodies of water, the shores areas of and in natural standing bodies of water and natural streams.
Classification after Prof. Dr. Sieber
- flower beds (rich soil)
- woodland borders (soil usually rich in humus)
- woods (soil usually rich in organic material)
Hosta sieboldiana is considered a very valuable wild perennial. The ornamental value lies especially in its fragrance and the ornamental leaves. The recommended planting distance is 40 to 50 centimetres, the perennials are best planted in groups of 3 to 5. Suited for perennial borders and for mixed borders, as well as suited as container plant, specimen plant and as cut flowers.
Maintenance and Propagation
The plants need little to no maintenance if grown under suitable conditions.
- If possible the plants should not be transplanted.
- For healthy growth mulch in spring.
- water during dry periods.
- Cut back faded flowering shoots. Cut back after flowering.
Propagate by division.
Pests and Diseases
Distorted and discoloured leaves indicate an infestation with eelworms. Infected plants usually die and should be destroyed.
Disfigured and discoloured leaves and flowers indicate a viral infection. Remove affected plants and control insects that may spread the disease.
Small dark-coloured beetles feeding on the plants are very likely weevils. Their larvae feed on seedling, cuttings, roots and tubers. Handpick and destroy pests and improve hygiene. Additionaly use insecticide or biological control (nematodes).
- Walter Erhardt, Erich GÃ¶tz, Nils BÃ¶deker, Siegmund Seybold: Der groÃe Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
- Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.