Stems weak or reclining, 10-121cm long, square in cross-section with strongly ribbed corners, with very short, downward- or backward-pointing, firm, hair-like and curved bristles (a). whorled 6 to 8 per node, linear to oblanceolate, sessile, bristle tip, margins entire, rough hairs on margins and underside midrib, hook-tipped hairs above. Criticism of products or equipment not listed is neither implied nor intended. Insect Fact Sheets The cotyledons are smooth, lack hairs, and range in length from 1/2 to one inch. For alfalfa grown for seed apply before bud formation. The bristles on stems also allow stems to stick to animals, equipment and clothing. The leaves are simple, narrowly oblanceolate to linear, and borne in whorls of six to eight. Catchweed bedstraw and related plants are increasing as problems in cropland in the Pacific Northwest. The fruits are bristly, 1.5-4mm in diameter. Pest Sampling and Management Tactics Toggle navigation Auge, H, Mahn, E (1988) On the plasticity of Galium aparine L population growth and biomass allocation during the summer annual life cycle. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Flowers form in clusters of 3-5 in leaf axils. Sprawling annual with hooked bristles that cling to clothes, hence the common name of cleavers. Emu Plains, NSW. Pesticides must be applied legally complying with all label directions and precautions on the pesticide container and any supplemental labeling and rules of state and federal pesticide regulatory agencies. Integrated Pest Management Cultivation can be used to control small catchweed bedstraw plants after they emerge. Once seeds germinate, catchweed bedstraw develops rapidly. It is distinguished by its square, weak, clinging stems, its bristle-tipped leaves that also cling with backward-pointing bristles on the margins, and all leaves arranged in whorls of 3 to 8 at each node of the stem. To support our efforts please browse our store (books with medicinal info, etc.). Catchweed Bedstraw (Galium aparine) Click on images to enlarge . Weed Links The cotyledons (seed leaves) of bedstraw are oblong to egg shaped, with slightly notched tips. Section 18 Exemptions Combining biological and identifying characteristics of top interfering species along with new emerging research articles, media, and control options, weedinfo.ca provides the tools to make informed risk-reducing weed control decisions. Compiled by Andrew Hulting, Oregon State University, and Marjolein Schat, Montana State University, from the following sources: Catchweed bedstraw (Galium aparine) is an annual weed in the madder family (Rubiaceae) that is distributed worldwide. This mode of attachment is characteristic of the semi-self … Photo: Galium aparine, Cleavers. There are upwards of 3,000 species in the Rubiaceae family. Stems have small clinging hooks enabling this species to climb up other plants and structures. Tiny greenish-white flowers are borne in branching clusters from May to August and develop into round, green or purple fruits 3-5mm in … Catchweed bedstraw is also called goose-grass, sticky-willy, and cleavers. As typical for climbing species, shoots of G. aparine lose mechanical self-stability during growth and use adjacent plants as support for further elongation growth [3,4]. The attachment of G. aparine to the supporting structures in the surrounding vegetation is mainly provided by the leaves that are arranged in whorls of six (figure 1). Currently, catchweed bedstraw doesn't cause enough economic loss to warrant a search for biological control agents. Catchweed Bedstraw blooms small, white flowers that have four petals with pointed tips, and the plant is in bloom for one to two months from late spring to mid-summer. Apply postemergence from the 3-leaf stage through flag leaf emergence. Dispersal: The seeds are dispersed by water and by animals. Native in the Pacific Northwest and throughout North America. Description: Scrambling or twining annual; stems ± stout to 1.5 m long, with retrorse prickles mainly along the angles and long thin hairs at the nodes. Gucker, Corey L. 2005. Do not apply more than 1 pint per acre on newly seeded crops. The mite induces the leaf edges to roll inwards and the leaves to curl. Portion of stem enlarged to show the backward pointing bristles (a). Agronomic and Vegetable Crops General Chapters Small white flowers are produced in late May into June. The Weed Forager’s Handbook, Adam Grubb and Annie Raser-Rowland. Cleavers' fruits (diameter: 1.6 - 4.0 mm ) tend to be larger than false cleavers, the bristles have tuberculate bases, and the ventral hole tends to be round and deep. These tiny hook-like bristles on stems and leaves cause them to cling together in masses and to cling to clothing, skin or fur, hence the common name, "cleavers.". Catchweed bedstraw is a scrambling plant 4 to 40 inches tall with weak four sided stems and is sparsely branched. IPM for Turfgrasses Seeds can remain viable in the soil for up to 6 years. Lower and upper parts of a mature plant. The grass seeds readily and spreads on the wind from lawn to lawn. Galium aparine L. APNI* . State rules and regulations and special pesticide use allowances may vary from state to state: contact your State Department of Agriculture for the rules, regulations and allowances applicable in your state and locality. Common bedstraw is also called goose-grass, sticky-willy, and cleavers. Weak, sprawling stems, up to 1m (39in) long bear whorls of 6-8 long, slender green leaves with a prominent central vein. Protection of Pollinators Group 14 (PPO inhibitor) + Group 4 (synthetic auxins), Group 4 (synthetic auxins) + Group 6 (photosystem II inhibitor). The stems can reach up to three feet or longer, and are angular or square shaped. Seeds are dispersed long distances because they stick to feathers, fur and clothing. It is widespread in Auckland. Germination occurs mainly in Autumn. Calibration Galium aparine (GA) is a typical climbing plant growing widespread in Anatolia. It is thought that Virgin Mary prepared the manger by making a bed of Cleavers in it for baby Jesus. Longevity in the soil: Viability in soils is limited to 2 to 3 years. 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