Sonchus oleraceus, with many common names including common sowthistle, sow thistle, smooth sow thistle, annual sow thistle, hare's colwort, hare's thistle, milky tassel, milk thistle, soft thistle, or swinies, is a plant in the dandelion tribe within the daisy family. 2012 - At Risk - Recovering. In New Zealand it is known as puha Woolly thistle is easily identifiable with large, deeply-lobed, evenly-shaped leaves, and very large flower heads, wrapped in a 'cobweb' of cotton-like hairs. Flowers are produces in loosely branched, elongated, erect clusters. Sow thistle, and similar species hawksbeard, catsear, dandelion, hawkbit and oxtongue, are common weeds of Over 730 species of plants are present on these islands. Leaves are flat or slightly wavy and are divided nearly to the midrib into sharp, regular lobes. Massey University Weeds Database (accessed 23 June 2017). New Zealand's native plants provide delicious flavours and garnishes for local dishes. Common Sow-thistle can differ in leaf shape and overall appearance. (Prickly sow thistle) Sonchus oleraceus ac. They are Sonchus oleraceus or ‘sow thistle’ and Sonchus asper or ‘spiny leaved sow thistle’ (pictured below). New Zealand's native plants provide delicious flavours and garnishes for local dishes. The species native to NZ is S. kirkii, a biennial-perennial, which is more bitter than S. oleraceus. Sow thistle stems are unbranched until towards the top where it braches out and flowers develop. Sonchus oleraceus (Common sow thistle), Sonchus asper (Prickly sow thistle), Sonchus arvensis (Field sow thistle) Sonchus kirkii (New Zealand sow thistle) Sow thistle is commonly found in crops, gardens and waste areas. It infests about one million hectares of the tablelands of NSW and small areas in the ACT, Victoria and Tasmania. These are S. arvensis, perennial sow thistle, and the two annual species S. oleraceus, common sow thistle, and S. asper, prickly sow thistle. It is not frost tender. Sow thistle definition, any composite plant belonging to the genus Sonchus, especially S. oleraceus, a weed having thistlelike leaves, yellow flowers, and a milky juice. Marsh thistle looks somewhat like spear thistle at an initial glance, but without the large spines and leaf lobes, and usually with a thin, red, leaf margin. Sonchus oleraceus, with many common names including common sowthistle, sow thistle, smooth sow thistle, annual sow thistle, hare's colwort, hare's thistle, milky tassel, milk thistle, soft thistle, or swinies, is a plant in the dandelion tribe within the daisy family. ... Guthrie-Smith (1953) reported that in his hill country property in New Zealand, S. oleraceus was a ‘most prominent fire plant, temporarily possessing hundreds of acres of newly burnt forest land.’ Control Being an annual weed, hawksbeard tends to be more susceptible to herbicides than perennial look-alikes such as dandelion. Sow thistle. Arrow-shaped ear-like projections wrap around the stem at the base of the leaf stalks, Flower stems are erect, hollow, finely ribbed and hairless, leafy, branched and have milky sap. Readily controlled by all commonly used herbicides except trifluralin, Ministry for Primary Industries (Sustainable Farming Fund). Perennial sow thistle flowers are larger and resemble the dandelion. It is cryptic and can be very hard to find – particularly when grey-brown coloured and blending into the grassland. Conservation status of New Zealand indigenous vascular plants, 2012 Though they're considered weeds we let these flower in the gardens as its one of the flowers that I often see the native NZ bee feeding on. Due to its nature, prickly sow thistle is less favoured for food. The main difference between the two is that the annual sow thistle has much smaller flowers (less than 2.5 cm across) than the perennial sow thistle. Sow thistle would also make its way to New Zealand where the Maori people would use it for food and medicine. Chatham Island sow thistle rust. General status: Endemic. The perennial sow thistle (Sonchus arvensis) is often confused with the annual sow thistle (Sonchus oleraceus). Larva of ragwort leafminer, Chromatomyia syngenesiae (Diptera: Agromyzidae), dissected from a mine on common sow thistle, Sonchus oleraceus (Compositae). Blackman & Eastop list 23 species of aphid as feeding on field sow thistle (Sonchus arvensis) worldwide, and provide formal identification keys (Show World list). Sonchus oleraceushas hollow stems that exude latex, if damaged. Typically, this means 1 or 2 sprays per plant. The flowers are hermaphrodite. Email us your feedback Thistles are prickly plants mostly in the family Asteraceae. See more. Larva of ragwort leafminer, Chromatomyia syngenesiae (Diptera: Agromyzidae), dissected from a mine on common sow thistle, Sonchus oleraceus (Compositae). Puha = a type of sow thistle that is eaten as a vegetable in NZ Pois = Maori word for ball – they’re two balls on the end of two ropes and they’re twirled around making patterns during some Maori dances Huhu = a small edible grub or beetle found in NZ. Common sow thistle (Sonchus oleraceus) is an introduced edible species often mistakenly called pūhā. The root system consists of a stout taproot. Flaxseed oil. Common Name(s) Chatham Island sow thistle, Embergeria. Among the endemic plants are the two monotypic benera; Embergeria (Chatham Island sow thistle) and Myosotidium (Chatham Islands forget-me-not) There are other endemic plants that are also becoming more widely known, including the Keketerehe or Chatham Island tree-daisy, Chatham Island aster and Rautini or Chatham Island christmas tree. 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