(5) Salinity range — less than 35 parts per thousand. 



(6) Optimal planting date — March and April. 



c. Lyngbye's Sedge (Fig. 8) : 



(1) Planting technique sprigs. Plants can be readily moved 



from high to low salinity sites but not the reverse. 



(2) Plant spacing — 1.5-foot centers or about 16,000 plants per 

 acre. 



(3) Planting zone — mean lower high water to mean higher high 

 water. 



(4) Planting width — the entire planting zone should be planted 

 when practicable; however, there is typically no advantage in plant- 

 ing to a width of more than 60 feet. A practical minimum width is 

 20 feet or 60 percent of the planting zone, whichever is greater. 

 When only part of the planting zone is to be planted, the planting 

 should be from mean higher high water seaward. 



(5) Salinity range — to 20 parts per thousand. 



(6) Optimal planting period — April, May, and June. 



d. Tufted Hairgrass (Fig. 9) : 



(1) Planting technique — sprigs. 



(2) Plant spacing — 3 feet or about 4,000 transplants per acre. 



(3) Planting zone — mean higher high water and above. 



(4) Minimum planting width — none. 



(5) Salinity range — fresh and brackish. 



(6) Optimal planting period — April, May, and June. 



5. Other Useful Species. 



The above four species, generally the effective pioneers in the intertidal 

 zone, provide an environment into which other species may invade. In some 

 cases, however, planting of the entire slope is advisable to control erosion 

 caused by storm tides, surface runoff, or wind. The species potentially 

 useful in such cases are as follows: 



(a) Black needle rush (Junaus voemevianus) 



(b) Common reed (Phragmites austvalis) 



(c) Cordgrasses: 



(1) Big cordgrass (Spavtina eynosuv aides) 



(2) Gulf cordgrass (Spavtina spartinae) 



(3) Saltraeadow cordgrass (Spavtina patens') 



16 



