Overview
Crambe pontica is a perennial herb in the genus Crambe, part of the Brassicaceae family. Crambe pontica grows best in full sun and partial shade, and tolerates well-drained and fertile soils and neutral and alkaline pH. Its UK hardiness is rated H7. Suggested uses include borders and rock gardens. It is native to Black Sea region.
About
Crambe pontica is a member of the Brassicaceae family within the genus Crambe, notable for bearing erect stems topped with dense racemes of small flowers. In the UK it blooms from June to August. The flowers sit above a basal rosette of leaves, presenting the inflorescences clearly to pollinators and to the eye. Identification relies on the compact raceme structure typical of Crambe species.
About the genus
Crambe is a genus of annual and perennial flowering plants in the family Brassicaceae, native to a variety of habitats in Europe, Turkey, southwest and central Asia and eastern Africa. They carry dense racemes of tiny white or yellow flowers on stems above the basal leaves. Crambe hispanica subsp. abyssinica, formerly known as Crambe abyssinica, is grown for the oil from the seeds that has characteristics similar to whale oil.
Wikipedia contributors, "Crambe", CC BY-SA 4.0 — Crambe
In the garden
Crambe pontica belongs to the mustard family, Brassicaceae, and sits within the genus Crambe. Species in this genus are characterised by erect flowering stems that carry dense racemes of small flowers above the leaves; Crambe pontica produces its blooms in the UK from June to August. That summer flowering window makes its inflorescences a mid-season feature in open plantings. Growing notes for Crambe pontica start with confirming supplier or specialist literature for exact cultural needs, since requirements can vary across the genus. Labels should indicate whether the plant is sold as seed, young plants or rooted divisions and provide guidance on soil, aspect and winter protection appropriate to your site. Plants in the genus commonly present their flower stems well above the foliage, so consider planting where raised display will be visible rather than obscured by taller neighbours. In a UK garden Crambe pontica can be used where a clear summer display of many small flowers is wanted on upright stems. Its flowering period from June to August means it slots into the border after spring bulbs and ahead of late-summer perennials. Check provenance and planting recommendations for your climate and soil before committing to a position, and expect the summer racemes to be the plant’s most obvious contribution to the border.
Growing conditions
Best soil and position for Crambe
- Sunlight
- full sun, partial shade
- Soil type
- well-drained, fertile
- Soil pH
- neutral, alkaline
- Soil moisture
- moderate
- Exposure
- sheltered to exposed
- UK hardiness
- H7
Plant details
Crambe pontica size, habit and characteristics
- Plant type
- perennial herb
- Suggested uses
- borders, rock gardens
- Native to
- Black Sea region
Care notes
Pruning and caring for Crambe pontica
- Cultivation
- Prefers well-drained soil; avoid waterlogging; can tolerate some drought once established.
- Pruning
- Remove spent flower heads to encourage tidiness; cut back after flowering to maintain shape.
- Propagation
- Seed, division
Frequently asked questions
How do I grow Crambe pontica?
Prefers well-drained soil; avoid waterlogging; can tolerate some drought once established.
Where is the best place to plant Crambe pontica?
Crambe pontica prefers full sun and partial shade. It suits sheltered to exposed positions.
What soil does Crambe pontica need?
Crambe pontica grows best in well-drained and fertile soil. It prefers neutral and alkaline soil. Aim for soil that stays moderate.
How do I prune Crambe pontica?
Remove spent flower heads to encourage tidiness; cut back after flowering to maintain shape.
Is Crambe pontica hardy in the UK?
Crambe pontica has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Crambe pontica?
Seed, division.
