Landscape Management, Weed Watch 2014
WEEDWATCH STANDING SENTINEL TO PROTECT PLANT HEALTH SPURGE Euphorbia spp pictured E maculata For more information regarding these and other turf weeds and related control technologies and tips please visit www DowProvesIt com or call 800 255 3726 BROUGHT TO YOU BY LANDSCAPEMANAGEMENT NET JUNE 2011 20 PHOTOS COURTESY DR RONALD CALHOUN LEFT DR SHAWN ASKEW Recommended Dow AgroSciences solution Dimension specialty herbicide Recommended Dow AgroSciences solution Dimension specialty herbicide sidewalks and in open turf areas CONTROL TIPS Spurge plants are proli c seed producers Apply a spring treatment of a pre emergent herbicide that offers residual broadleaf weed control such as dithiopyr Spurge germination is prominent in compacted soils so alleviating compaction or the reasons behind compaction such as poor drainage or nematode infestations will help keep spurge infestations from occurring State restrictions on the sale and use of Dimension specialty herbicide products apply Consult the label before purchase or use for full details IDENTIFICATION TIPS This annual emerges a few weeks after crabgrass and continues well into the summer The coarse bunch type grass features dark green leaves that form a basal rosette of prostrate to upright lattened stems Compressed stems near the base are silver or white in color Flowers contain two to 10 lattened nger like spikes that resemble a zipper The strong extensive root system invades hightraf c areas like athletic elds or golf courses CONTROL TIPS Improving turfgrass health and vigor through proper fertilization and maintenance is most advantageous If possible alleviate compaction and minimize traf c For complete control apply a pre emergent herbicide such as dithiopyr just prior to crabgrass germination This timing will provide season long control of both crabgrass and goosegrass IDENTIFICATION TIPS Red or purple tinged stems and opposite leaves are common All species emit milky sap when broken Oblong leaves are smooth or sparsely hairy reddish green to dark green in color often with a maroon or purple spot in the center The prostrate structure forms mats by branching from the base This warm season annual is found in disturbed soil such as gardens and lower beds along GOOSEGRASS Eleusine indica
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