Flower: Creeping Thistle flowers form in clusters, are a lilac/purple colour and can be seen from June to September. This variety of thistle grows by spreading, giving it the nickname creeping thistle. •Creeping thistle (Cirsium arvense) is the most common perennial thistle to invade both grass and arable land •It spreads rapidly and forms large patches that compete with crops, interfere with harvesting and reduce yields Chemical control of creeping thistle should be part of an integrated management approach which include, where feasible, cultivations, mowing or grazing, and competitive crops. Method of thistle control. Instead of growing on stems, Dwarf Thistle grows a rosette of leaves. Although thistle is technically a herbacious plant of the daisy family, it’s also classified as a Noxious Weed in many states, meaning it’s harmful enough to warrant government-regulated control. Creeping Thistle is the most common thistle species in the U.S. Control: As we have previously stated this weed is more of a problem in newly sown lawns and … Like Creeping Thistles, the leaves are similar to Dandelions and spiky but they’re pretty much hairless. Objective. The Control of Creeping Thistle (Cirsium arvense) The species has fewer spines on the margins of the first leaves than the other thistles. Creeping Thistle Management Strategies in Organic Systems Why is creeping thistle a problem for farmers? The Creeping thistle is our most common species of thistle and can be found on disturbed and cultivated ground, such as rough grassland, roadside verges and field edges from June to October. Cutting by tractor-mounted cutter, scythe or strimmer. Its creeping roots enable it to quickly spread across an area, forming large colonies. If you’re dealing with creeping thistle, it’s best to cut it when it reaches 4 to 6 inches (10 to 15 cm) long. Growing from the centre of this rosette of leaves is the reddish purple flower which blooms between June and September. Where infestations of creeping or spear thistle are small, bird nesting is not an issue, equipment and labour are available and where total control is neither desirable nor necessary. It is difficult to control because its extensive root system allows it to recover from control attempts. It prefers recently disturbed/cultivated grounds (such as vegetable gardens), road side and field edges, and other patches of relatively barren soil. One of the worst weeds, it occurs abundantly in grassland, arable and waste land throughout the British Isles spreads by far-creeping roots which can really regenerate new plants from small pieces, and to a lesser extent by seed Typically, this will happen around early June. Combining control methods is the best form of Canada thistle management. Creeping thistles generally have a varied response to herbicide treatment, as there is much variation within the species including the rooting system and growth habit. Preferred habitat: Creeping Thistles favour newly sown lawns. Don’t let the flowers dry out because they’ll spread thistle seeds. Suitable situation. The most common thistle species, Canadian or creeping thistle (Cirsium arvense), is found throughout the U.S. Good to Know, How Thistle Grows Creeping thistle (Cirsium arvense) has become an increasing problem particularly on organic arable farms with soils of higher organic matter content.It competes with crops for water and nutrients and once established, mechanical removal is difficult. By following some rules of plant cultivation, in combination with direct methods, it can be effectively controlled. Timing of cutting is crucial. Canada thistle is a creeping perennial that can be controlled with fall spraying, in conjunction with other management options in the spring. 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