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Thymus serpyllum - Wild Thyme

Green Team at Green Roof Technology, - Tuesday, March 26, 2013

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Wild Thyme is a low, creeping herbaceous perennial. Only growing to about 4" tall, this evergreen shrub makes for great ground cover. Although native to Europe, Asia and Northern Africa, Thyme has been naturalized in most of North America. Spotted growing in between zones 4 and 8, the plant will flourish in full sun with average to well-drained soils. Soggy soils can make Wild Thyme susceptible to root rot. In early summer a sea of purple flowers appear. These clusters of flowers may range from lilac to magenta. Don't let the tiny appearance of these flowers fool you, they are strongly scented, giving off an herbal-like lemony scent. The flowers attract wild honeybees and butterflies. In Europe the Large Blue Butterfly relies on the presence of Wild Thyme because they feed almost exclusively on it.

The leaves are oval and slender, with a slight glossy appearance. The oil found within the leaves is an antiseptic, disinfectant, expectorant, and a diuretic. It is most commonly used to treat respiratory infections, but is also used to fight cramps & spasms, cuts & ulcers, headaches or weak digestion. Thyme is also a popular herb used in the culinary arts and may also be made into tea.Thyme is one of many valuable plants that is suitable for urban farming on bio-diverse non-irrigated extensive green roofs in less polluted areas.


Tulipa sylvestris

Green Team at Green Roof Technology, - Tuesday, March 12, 2013


Also known as the woodland or wild tulip, this fragrant, sunshine yellow flower was first recorded in Europe.  Easily naturalized in fields, it can be found mostly in the north eastern United States in hardiness zones 3-9.  Growing anywhere from 4-12", this tulip is comfortable in full sun or partial shade and grows best in well drained soils.  Blooming in mid to late spring, the wild tulip has the ability to clone itself by underground stolons, running horizontally and popping up several feet away.  These runners help this bulbous perennial to spread easily over any landscape. Ironically these woodland tulips have been slowly disappearing in the wild.


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