trim spacers 104 however while the trim spacer 104 included a straight central web 134 the angled trim spacer 142 has a central web 148 which is angled as illustrated in fig2 23 and 24 this angled configuration results in an elevation view as shown in these drawings which is trapezoidal in configuration with this configuration a substantially greater vertical adjustment can be made between adjacent border picket assemblies 102 with this angled configuration of the angled trim spacer 142 adjacent border picket assemblies 102 can be positioned as illustrated in fig2 with one of the border picket assemblies 102 being positioned in a substantially higher plane than the adjacent and coupled border picket assembly 102 with a series of these border picket assemblies 102 interconnected through the use of angled trim spacers 142 a decorative border structure 100 can be constructed so as to appear as illustrated in fig2 in accordance with the foregoing description a decorative border structure 100 in accordance with the invention can be readily assembled also with the pivotable interconnections of trim spacers 104 angled trim spacers 142 and border picket assemblies 102 a curvature can be provided to the decorative border structure 100 in addition through the use of the permitted alignment adjustment for the trim spacers 104 and with the use of angled trim spacers 142 the border picket assemblies 102 of the decorative border structure 100 can be adjusted so as to be appropriately positioned on ground terrain of varying inclinations and declinations although a decorative border structure 100 in accordance with the invention can be constructed of various materials the inventors have discovered that construction with polypropylene material may.