Practical ecological knowledge for the temperate reader.

Turritis glabra - Tower mustard

Family: Mustard - Brassicaceae [E-flora]

"Turritis glabra is a ANNUAL/BIENNIAL growing to 0.6 m (2ft).
It is hardy to zone (UK) 7. It is in flower from May to July. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Self.The plant is self-fertile.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It prefers moist soil." [PFAF]

"General: Biennial or short-lived perennial herb from a simple stem-base; stems simple or branched above, 0.3-1.2 m tall, densely stiff-hairy at base, usually glabrous above." [IFBC-E-flora]

"Notes: This taxon occurs in many native habitats but also readily colonizes roadsides and waste places. Its native status is therefore uncertain (Rollins 1993)." [IFBC-E-flora]

"Habitat / Range Moist to dry streambanks, meadows, open forests, rock outcrops, roadsides and waste places in the lowland and montane zones; common throughout BC; E to PQ and S to GA and N CA; native status uncertain, also occurs in Eurasia." [IFBC-E-flora]

Origin Status: Native [E-flora]

Food Use

Medicinal Use

Cultivation & Propagation
"An easily grown plant, doing well in ordinary well-drained soil[1]. It also succeeds in dry soils and on walls[K]. Suitable for the wild garden in situations similar to those in its wild habitat[200]." [PFAF]

"Seed - sow late summer in situ." [PFAF]




"Biennial (perennial herb), glaucous distally; hairs on proximal parts simple to stalked-forked or many-branched. Leaf: basal rosetted, petioled, [entire or] dentate to pinnately lobed; cauline sessile, sagittate to clasping, dentate or entire. Inflorescence: much elongated. Flower: sepals erect, base not sac-like; petals ± white (pink or purple), not clawed. Fruit: silique, dehiscent, linear, cylindric or ± 4-angled, unsegmented; stigma entire. Seed: 130–200, 2 rows per chamber, wingless or only tip winged; cotyledons face-to-face.
2 species: North America, Eurasia, northern Africa. (Latin: tower, from orientation of overlapping leaves, fruits, giving plant a pyramidal shape) [Al-Shehbaz 2005 Novon 15:519–524]" [Jepson]

Local Species


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