Overview
Cynoglossum zeylanicum is a bushy, clump forming, columnar upright herbaceous perennial in the genus Cynoglossum, part of the Boraginaceae family, with deciduous foliage. Cynoglossum zeylanicum grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H5. Suggested uses include city and courtyard gardens, cottage and informal garden, wildlife gardens and coastal.
About
Cynoglossum zeylanicum, also called the Ceylon hound's tongue, Ceylon forget-me-not, and Indian hound's tongue, is a species of flowering plant in the family Boraginaceae. It is found throughout Asia. It has also been introduced to the Americas. It is native to Caribbean and North America. In the garden it prefers full sun and partial shade and most soil types. In UK gardens it is hardy in most of the UK (RHS H5). Suggested uses include city and courtyard gardens, cottage and informal garden, wildlife gardens and coastal. It tolerates soil of any pH, moist but well-drained, well-drained conditions and west-facing, south-facing and east-facing aspects. Plant out after last frost in fertile, well-drained soil.
Wikipedia contributors, CC BY-SA 4.0 — Cynoglossum zeylanicum
Growing conditions
Best soil and position for Cynoglossum
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Alkaline, Acid, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- West-facing, South-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H5
Plant details
Cynoglossum zeylanicum size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Bushy, Clump forming, Columnar upright
- Foliage
- Deciduous
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Wildlife gardens, Coastal
Care notes
Pruning and caring for Cynoglossum zeylanicum
- Propagation
- Propagate by seed in a cold frame in autumn or spring or by division in spring
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to powdery mildews
Frequently asked questions
Where is the best place to plant Cynoglossum zeylanicum?
Cynoglossum zeylanicum prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Cynoglossum zeylanicum need?
Cynoglossum zeylanicum is adaptable and grows happily in most soil types, including chalk, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained to well-drained.
Is Cynoglossum zeylanicum hardy in the UK?
Cynoglossum zeylanicum has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Cynoglossum zeylanicum?
Propagate by seed in a cold frame in autumn or spring or by division in spring.
