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.
Brilliant colors are more often seen when the fall weather has warm, sunny days with cool nights between 32Â° and 45 Â°F. Indeed, shade-grown leaves often are a duller color than leaves that are in the full sun, even on the same plant. The reds and purples found during the fall are due to the anthocyanin compounds.