Weed Type : Forb/Herb

Thornapples - Datura inoxia
  • Robust annual herbs to 1.5 m with erect branching stems.
  • Large, dark-green, leaves, shallow scalloped edges, unpleasant odour when crushed.
  • White flowers trumpet-shaped, 7-10 cm long, in upper leaf axils, sweetly perfumed.
  • Globular fruits, 4-5cm long, covered with sharp prickles.

Thornapples - Datura ferox

Spiny head sida - Sida acuta
  • An erect small shrub growing to around 1.5 m.
  • Stems woody, branching several times, with well-developed tap root.
  • Leaves narrow, lance shaped, tapered both ends, serrated edges.
  • Yellow flowers, usually solitary or in pairs in the leaf axils.
  • Fruit is a hard, dark brown dry capsule, splitting into 5-8 segments each with a wedge-shaped, black seed having 2 sha
Stachytarpheta mutabilis
  • Perennial shrubs to 2 m high with tough stems and a woody rootstock.
  • Young stems somewhat quadrangular.
  • Leaves opposite, shallow-toothed.
  • Flowers with 5 petals in stiff curved spikes from the top of the branches.

1.  Stachytarpheta mutabilis - Lower leaf surfaces, rachis (Main axis of flower head) and calyx hairy, flowers

Praxelis  -  Eupatorium catarium
  • An annual to short-lived perennial herb, usually growing from 40-80cm tall, but can grow to 1meter.
  • Flowers throughout the year, but most commonly after onset of wet season.
  • Flowers are an intense lilac-blue colour. (Which can be confused with “bluetops”)
  • Leaves are hairy and toothed along edges.
Noogoora burr - Xanthium occidentale
  • Annual branched herb to 2 m high.
  • Stems are rough to touch and often tinged purple.
  • Leaves are dark-green, purple veined, with 3-5 large lobes resembling a grape leaf, margins coarsely toothed, lower leaves opposite, upper leaves alternate.
  • Greenish flowers in clusters, male flowers inconspicuous at the end of branches and soon fall off, female flowers in leaf axils
Mother of millions - bryophyllum delagoense
  • Erect, smooth, succulent herbs, to 1 m high.
  • Each species has distinctive leaf shape, but all produce small plantlets along the edges of the leaves which readily drop, develop roots and establish quickly to form a new colony.
  • All species form tall flower spikes with clusters of bell-shaped flowers.

Mother of millions - bryophyllum delagoense

Mother-in-law’s tongue - Sansevieria trifasciata
  • Upright succulent herb or forb that grows to 60 cm.
  • From the fleshy rhizome emerge stiff, lance-shaped leaves, 0.6 m to 1.2 m long, dark-green with mottling of grey-green and yellow throughout.
  • Small, cream to green, tubular flowers are carried on a spike.

Mother-in-law’s tongue - Sansevieria trifasciata

Knobweed - Hyptis capitata
  • An erect aromatic robust herb with several quadrangular branching stems 60-250 cm high.
  • Leaves are bright green, opposite and widely spaced on stems, up to 12 cm long, 5 cm wide, tapering at both ends, margins irregularly toothed.
  • Small white flowers in compact globular heads about 1.5 cm diameter on stalks to 5 cm long in leaf axils.
  • Fruit is a 4-lobed capsule divi
Gambia pea - Crotalaria goreensis
  • Erect annual or short-lived perennial herb to 1 m.
  • Stems finely ribbed and hairy.
  • Leaves have 3 elliptical leaflets up to 8 cm long.
  • Characteristic rabbit-ear-like outgrowths where the leaf stalk is attached to the stem.
  • Flowers are pea-like, yellow with orange or brown streaks, on a short stem at the ends of branches.
  • Inflated pods 15-20 mm long, br
Lion's tail - Leonotis nepetifolia
  • Erect annual herb to 3 meters high covered with short white hairs.
  • Stems are quadrangular often grooved.
  • Leaves opposite, with toothed edges.
  • Flowers orange and velvety in 2-4 round spiky clusters along the upper stem, and form hard spiky balls when mature.
  •  Seeds are very small, many, and triangular.

Lion's tail - Leonotis nepetifolia