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A ground anchor for a delineator includes a unitary plastic body having a receptacle shaped and configured for connection to a delineator post and a ground engaging portion extending from the receptacle along a longitudinal axis. The ground engaging portion includes a plurality of tapered blades. De

A ground anchor for a delineator includes a unitary plastic body having a receptacle shaped and configured for connection to a delineator post and a ground engaging portion extending from the receptacle along a longitudinal axis. The ground engaging portion includes a plurality of tapered blades. Delineator assemblies using the ground anchor, and methods of installing the ground anchor, are also provided.

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1. A ground anchor for a delineator, the ground anchor comprising: a unitary plastic body comprising: a receptacle shaped and configured for connection to a delineator post; anda ground engaging portion extending from said receptacle along a longitudinal axis, said ground engaging portion comprising

1. A ground anchor for a delineator, the ground anchor comprising: a unitary plastic body comprising: a receptacle shaped and configured for connection to a delineator post; anda ground engaging portion extending from said receptacle along a longitudinal axis, said ground engaging portion comprising a plurality of tapered blades each having a linear edge, wherein at least two of said tapered blades each comprise at least one cutout interrupting and extending inwardly from said linear edge and defining at least one barb, wherein said linear edge is positioned on and extends from opposite sides of said cutout, wherein said at least one barb defined on each of said at least two tapered blades does not extend outwardly from said linear edge of said blade, and wherein said at least one barb on one of said at least two blades is longitudinally offset from said at least one barb on the other of said at least two tapered blades along said longitudinal axis, and wherein said at least one barb on said one of said at least two tapered blades is not longitudinally aligned with any barbs on said other of said at least two tapered blades. 2. The ground anchor of claim 1 wherein said receptacle comprises a pair of concentric cylinders. 3. The ground anchor of claim 1 wherein said receptacle defines a drive platform lying substantially perpendicular to said longitudinal axis. 4. The ground anchor of claim 3 wherein said drive platform comprises a plurality of projections. 5. The ground anchor of claim 3 wherein said unitary plastic body further comprises a reinforcing structure disposed beneath said drive platform. 6. The ground anchor of claim 5 wherein said reinforcing structure comprises a plurality of ribs disposed between at least some of said plurality of tapered blades. 7. The ground anchor of claim 1 wherein said plurality of tapered blades extend radially from a central axis and are tapered along the longitudinal axis to form a terminal point. 8. The ground anchor of claim 1 wherein at least some of said plurality of tapered blades are chamfered along an outer edge. 9. The ground anchor of claim 1 wherein said tapered blades each comprise a lower portion having a tapered edge and an upper portion having a non-tapered edge extending parallel to said longitudinal axis. 10. A delineator assembly comprising: a ground anchor comprising a unitary plastic body comprising a receptacle and a ground engaging portion extending from said receptacle along a longitudinal axis, said ground engaging portion comprising a plurality of tapered blades each having a linear edge, wherein at least two of said tapered blades each comprise at least one cutout interrupting and extending inwardly from said linear edge and defining at least one barb, wherein said linear edge is positioned on and extends from opposite sides of said cutout, wherein said at least one barb defined on each of said at least two tapered blades does not extend outwardly from said linear edge of said blade, and wherein said at least one barb on one of said at least two blades is longitudinally offset from at least one barb on the other of said at least two tapered blades along said longitudinal axis, and wherein said at least one barb on said one of said at least two tapered blades is not longitudinally aligned with any barbs on said other of said at least two tapered blades; anda delineator post coupled to and extending from said receptacle along said longitudinal axis. 11. The delineator assembly of claim 10 wherein said receptacle comprises inner and outer concentric cylinders, and wherein said delineator post comprises a first tube disposed between said cylinders, inside said inner cylinder, or outside said outer cylinder. 12. A delineator assembly comprising: a ground anchor comprising a unitary plastic body comprising a receptacle and a ground engaging portion extending from said receptacle along a longitudinal axis, said receptacle comprising inner and outer concentric cylinders, and said ground engaging portion comprising a plurality of tapered blades having an edge, wherein at least two of said blades comprise at least one cutout defining at least one barb, wherein said at least one barb defined on each of said at least two blades does not extend outwardly from said edge of said blade, and wherein said at least one barb on said at least two blades are longitudinally offset along said longitudinal axis; anda delineator post coupled to and extending from said receptacle along said longitudinal axis, wherein said delineator post comprises a first tube disposed between said cylinders or inside said inner cylinder, and further comprising a second tube disposed between said cylinders or outside of said outer cylinder. 13. The delineator assembly of claim 10 wherein said receptacle defines a drive platform lying substantially perpendicular to said longitudinal axis. 14. The delineator assembly of claim 13 wherein said drive platform comprises a plurality of projections. 15. The delineator assembly of claim 13 wherein said unitary body further comprises a reinforcing structure disposed beneath said drive platform. 16. The delineator assembly of claim 15 wherein said reinforcing structure comprises a plurality of ribs disposed between at least some of said plurality of tapered blades. 17. The delineator assembly of claim 10 wherein said plurality of tapered blades extend radially from a central axis and are tapered along the longitudinal axis to form a terminal point. 18. The delineator assembly of claim 17 wherein at least some of said plurality of tapered blades are chamfered along an outer edge. 19. The delineator assembly of claim 10 wherein said tapered blades each comprise a lower portion having a tapered edge and an upper portion having a non-tapered edge extending parallel to said longitudinal axis. 20. The delineator of claim 12 wherein said first tube is disposed between said cylinders and said second tube is disposed outside of said outer cylinder, wherein said first tube is nested in said second tube. 21. The delineator of claim 20 wherein said first tube is shorter than said second tube. 22. A method of installing a ground anchor for a delineator post, the method comprising: providing a ground anchor comprising a unitary plastic body comprising: a receptacle shaped and configured for connection to a delineator post, said receptacle comprising a driving platform; anda ground engaging portion extending from said receptacle along a longitudinal axis, said ground engaging portion comprising a plurality of tapered blades each having a linear edge, wherein at least two of said tapered blades each comprise at least one cutout interrupting and extending inwardly from said linear edge and defining at least one barb, wherein said linear edge is positioned on and extends from opposite sides of said cutout, wherein said at least one barb defined on each of said at least two tapered blades does not extend outwardly from said linear edge of said blade, and wherein said at least one barb on one of said at least two blades is longitudinally offset from said at least one barb on the other of said at least two tapered blades along said longitudinal axis, and wherein said at least one barb on said one of said at least two tapered blades is not longitudinally aligned with any barbs on said other of said at least two tapered blades;positioning said ground engaging portion at a targeted location on a ground surface; andapplying a force with a driving tool against said driving platform and thereby driving said ground engaging portion into said ground. 23. The method of claim 22 wherein said drive platform comprises a plurality of projections, and wherein said applying said force with said driving tool comprises applying said force to said projections. 24. The method of claim 22 wherein said ground anchor further comprises a reinforcing structure disposed beneath said drive platform. 25. The method of claim 22 further comprising providing a delineator post coupled to said receptacle of said ground anchor, and wherein said applying said force with said driving tool against said driving platform comprises inserting said driving tool through said delineator post and into engagement with said driving platform. 26. The method of claim 25 wherein said delineator post is coupled to said receptacle with a laterally extending fastener, and wherein an end portion of said driving tool comprises a groove shaped to receive said fastener as an end of said driving tool is engaged with said driving platform. 27. The method of claim 25 wherein said driving tool comprises a collar disposed around an outside of said post, wherein said collar has an upper surface suitable for receiving a force applying tool and a bottom surface engaging said driving platform. 28. A method of installing a ground anchor for a delineator post, the method comprising: providing a ground anchor comprising a unitary plastic body comprising: a receptacle shaped and configured for connection to a delineator post, said receptacle comprising a driving platform; anda ground engaging portion extending from said receptacle along a longitudinal axis, said ground engaging portion comprising a plurality of tapered blades having an edge, wherein at least two of said blades comprise at least one cutout defining at least one barb, wherein said at least one barb defined on each of said at least two blades does not extend outwardly from said edge of said blade, and wherein said at least one barb on each of said at least two blades are longitudinally offset along said longitudinal axis, and wherein said tapered blades each comprise a lower portion having a tapered edge and an upper portion having a non-tapered edge extending parallel to said longitudinal axis;positioning said ground engaging portion at a targeted location on a ground surface;locating a driving tool relative to said ground anchor, wherein said locating said driving tool comprises surrounding said upper portion with a collar; andapplying a force with a driving tool against said driving platform and thereby driving said ground engaging portion into said ground. 29. The method of claim 28 wherein said driving said ground engaging portion into said ground further comprises driving said ground engaging portion into said ground until an indicator disposed on said collar is located proximate a surface of said ground and thereafter removing said driving tool. 30. The method of claim 29 wherein said indicator is positioned proximate a top of said ground engaging portion when said collar surrounds said upper portion and said driving tool is engaged with said driving platform.