EQUISETUM DIFFUSUM (PONYTAIL) - Needle-like, segmented bearing evergreen twisted hollow stems. Spreads rapidly, almost fernlike foliage. Can grow up to 12 inches tall.
EQUISETUM HYMALE (HORSETAIL) - Very distinctive jointed bamboo-like stems with cylindrical habit. Can grow up to 5 feet tall. Zone 4-9
EQUISETUM SCIRPOIDES (DWARF HORSETAIL) - An aquatic marginal plant with erect to slightly twisting, hollow, segmented, black-banded green stems and sharp-pointed, cone-like, pale brown fruiting heads at the tips. Can grow up to 1 foot. A wonderful accent plant. Zone 4-9
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