Laserfiche WebLink
Paile 9 of ?3 <br />Perennial Sowthistle <br />Appendix I <br />Perennial Sowthistle are highly competitive, persistent, and can rapidly colonize new sites by vegetative <br />reproduction. Perennial Sowthistle seldom tluwers in the first year. With true roots this plant creeps <br />underground and curates tip meters away. Flowers open two to three hours after sunrise and close around <br />noon. Seeds are dispersed around ten days after first opening. With no dormancy period a seed firm the <br />previous year will genninate next spring. I t 'seed in water for nwrc than three months it will decompose. <br />Perennial Sowthistle also produces seeds. Perennial Sowthistle thrives on nott-CUmpactcd, tine , rich <br />slightly alkaline to neutral soils. Tolerates some salinity. <br />Mechanical Control of <br />By tilling below 30 cm or leaving them on the surface to dessicate may reduce intestations. 11Ie optimal <br />timing For cultivation to reduce root energy reserves is when plants is just emerging firm the ground. <br />Repeated cultivation will be necessary lir most infestations. <br />Chemical Control of Plumeless Thistle <br />Auxin type herbicides such as 2.4-d, dicamba, MCPA, and clopyralid have been effective with repeated <br />applications wfien plants are in the seedling or early bud stages. Glyphosate may also be applied as <br />effective spot treatment. <br />NI kNA(;FNIE'NT