Whereas the Boulder Blue was hardier than the Elijah Blue, the Beyond Blue remains an even brighter blue over July and August when the Elijah Blue has long turned brown. It has slender, cascading foliage that is intensely silver-blue throughout the growing season. The Beyond Blue Fescue is the best blue foliage grass we've seen to stand up to the heat of summer here with our hot, humid weather in middle Tennessee. It is an evergreen to semi-evergreen grass with a compact, dwarf habit that grows 3/4 to 1 ft. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It is often used as a 'filler' in the 'spiller-thriller-filler' container combination, providing a canvas of foliage against which the thriller plants stand out. Great to accent a rock garden, or for use en masse to edge a border or create a groundcover. Beyond Blue Fescue will grow to be about 12 inches tall at maturity, with a spread of 18 inches. Beyond Blue Blue Fescue is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. Buff-colored plumes create eye-catching contrast in late summer. However, the Beyond Blue can survive in some partial shady spots, but the color will not be as vibrant. For a richer color, the Beyond Blue requires abundant sun. If you are planting this fescue in your landscape, it needs at least six hours of sunlight per day. 'Casca11', sold under the trade name of BEYOND BLUE, was discovered in 2002 by Annemarie Blom of Haarsteeg, The Netherlands as a naturally occurring mutation of Festuca glauca 'Elijah Blue'. Beyond Blue Fescue Festuca glauca Casca11 PP 23,37 A dense mound of intense, colorfast, powder blue foliage that provides waterwise, heat and humidity tolerant texture. The Beyond Blue fescue can thrive in USDA hardiness zones 4 to 8. Specific epithet means with a white, powdery coating. Genus name comes from the Latin word meaning a grass stalk or straw. Flowers give way to buffy seed heads which some gardeners find attractive but others find detractive to both the symmetry of the plant and the foliage color. Light green flowers with a purple tinge appear in terminal panicles atop stems rising above the foliage in late spring to early summer, but inflorescences are not very showy. Foliage forms a dome-shaped, porcupine-like tuft of erect to arching, needle-like blades radiating upward and outward to a height of 6-8" (inflorescences typically bring total clump height to 10-14"). Festuca glauca, commonly called blue fescue, is a short-lived, low-growing, semi-evergreen, clump-forming ornamental grass noted for its glaucous, finely-textured, blue-gray foliage.
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