Biarum carduchorum is most readily separated from B . angustatum by the upward-directed staminodes and the considerably wider leaves. B . carduchorum is found further inland than B. angustatum . Tuber dorsoventrally compressed-discoid, 4–7 cm × 1.5–2.5 cm, sparsely offsetting. Staminate flowers in a zone 15–25 × 2–3.5 mm, anthers cream ± stained deep purple. Pistillate flowers in a hemispherical cluster c. 7 × 7 mm; ovaries squatly bottle-shaped, 1.5–2 × 0.75 mm, pale cream, style c. 0.33 mm long, purple, stigma subcapitate, c. 0.25 mm in diam, purple. Grow it in full sun and loam soil. In UK gardens it is hardy in most of the UK (RHS H5). It works well for rock gardens, alpine beds and containers. It tolerates neutral soils, well-drained conditions and south-facing aspects. Plant at appropriate depth in well-drained soil.

Biarum carduchorum, commonly known as Kurdistan biarum, is part of the Araceae family. This plant features a unique structure where its flowers, similar to those of other arum species, rise just above the ground, accompanied by linear or oval-shaped leaves that appear after flowering.

Biarum carduchorum

Biarum davisii is an attractive species which, until the discovery of B. ditschianum , ranked as the most unusual taxon in the genus. Apart from its remarkably small size, characteristics such as the basically ovate foliage, deeply urceolate spathe tube, pinkish brown spathe and sweet lilac-like smell when in blossom are all unique in the genus. Staminate flowers in a cylindrical zone 8–10 × 2–3 mm, anthers cream. Staminodes a few scattered vestigial filaments may be found on the interstice, usually above the pistillate fl owers. In the wild it grows across Kriti. Grow it in full sun and loam soil. In UK gardens it is hardy in most of the UK (RHS H5). It works well for rock gardens, alpine beds and containers. It tolerates neutral soils, well-drained conditions and south-facing aspects. Plant at appropriate depth in well-drained soil.

Davis’s biarum (Biarum davisii) is a tuberous perennial from the Araceae family, known for its unique floral structure and distinctive leaf shape. This species features hooded flowers that sit close to the ground, with linear or oval leaves that emerge after the flowering phase.

Biarum davisii

Biarum ditschianum is a small tuberous perennial from the genus Biarum, known for its compact growth and ground-level flowers with a distinctive hooded shape. It produces linear or ovate leaves after flowering, typically in spring. This cultivar thrives in full sun on a south-facing, sheltered aspect with well-drained, neutral loam soil. Hardy to UK zone H5, it is suitable for rock gardens, alpine beds, or containers and can be propagated by division or seed.

Biarum ditschianum is a compact, tuberous perennial from Turkey with distinctive hooded flowers in spring, ideal for rock gardens and alpine beds in full sun.

Biarum ditschianum from Turkey

Biarum straussii is a small tuberous perennial belonging to the genus Biarum, known for its compact growth and ground-level, hooded flowers that appear in spring. It produces linear or ovate leaves after flowering and thrives best in full sun on a south-facing, sheltered aspect. This cultivar prefers well-drained, neutral loam soil and is hardy in the UK to H5. Suitable for rock gardens, alpine beds, or containers, Biarum straussii can be propagated by division or seed under these conditions.

Biarum straussii is a hardy H5 tuberous perennial with compact growth and hooded spring flowers, ideal for rock gardens, alpine beds, and containers in full

Biarum straussii

Biarum tenuifolium subsp. zeleborii is a small tuberous perennial from the Araceae family, native to Greece. As a member of the Biarum genus, it produces ground-level flowers with a distinctive hooded shape, followed by linear or ovate leaves. This cultivar thrives in well-drained loam soil with a neutral pH, ideally in a sheltered, south-facing spot with full sun. Hardy to UK zone H5, it is suitable for rock gardens, alpine beds, or containers and is best grown in spring. Propagation is possible by division or seed.

Biarum tenuifolium subsp. zeleborii is a hardy Greek tuberous perennial with distinctive hooded flowers, ideal for rock gardens and alpine beds in spring.