Despite the common names ringworm and dermatophyte, the disease is caused by a fungus, not a worm or plant. Trichophyton, Microsporum, and Epidermophyton are the most common genera that cause ringworm in humans. These organisms feed on keratin, the major structural component of hair, skin and nails.
Thuja occidentalis 'Nigra'. Naturally broad, pyramidal evergreen shrub displays deep green, scalelike needles arranged in flat sprays. New light green needles emerge in spring, deepening in color as they mature. Deep green color adds contrast to winter landscape.
1 Emerald Arborvitae grows 10' to 15' but can be trimmed shorter. 2  Nigra Arborvitae can grow 20' to 30' but takes pruning well so it can be trimmed shorter. 3  The Rose of Sharon is a great flowing hedge.  North Privet is a fast growing shrub that is suitable for many yards.