Horsetail (Equisetum hyemale)
is a very primitive perennial plant with dark-green hollow, jointed or segmented stems 1/4 to 1/2 inch thick with no true
leaves. The young grow to 1 - 2 ft., 1/8 - ¼" in diameter. Mature stems reach 3 - 6 ft., 3/8 - ½" in diameter. Stems may be
singular or have whorls of branches. Only single stems produce the cone-shaped spore producing body at the tip. Horsetails
can be standing in water or in wet areas. Horsetail stems contain silicon crystals (i.e. sand) embedded in its tissue. This
gritty texture gives it a common name of "scouring rush". Grows in continuously moist soil and tolerates full sun to partial
shade. Growth can overcome small gardens. Great for containers, adding an unusual touch to your patio or zen garden.
A Manual of Aquatic Plants - $49.50