Blue fescue is a small, mounded grass growing 6 to 10 inches tall. The spectacular, non-fading blue foliage and unique growing habits make this ideal for borders. The classic blue color of the foliage accents most colors and makes a cool statement in a mass planting. 6-10'' high. Chewings fescue is similar to tall fescue in that it grows in an upright fashion but is fine fescue with thin leaves. Tall fescue is an important turf grass in the United States today, but that wasn't always the case. They will return to normal conditions when the weather changes. Ornamental grasses, particularly blue fescue, also need to be divided every two to three years; this will revitalize them. Its foliage is blue, not green, and stays that way year-round. After mowing, examine your grass to see if the mower is cutting cleanly. When in flower, it may be 15 to 18 inches tall. It is valued for easy establishment, drought resistance and improved heat tolerance over many other tall fescue varieties. Cool-season grasses (fine fescues, tall fescues, Kentucky bluegrass, and perennial ryegrass) grow best in the moderate temperatures of spring and fall and slow down or may go dormant (turn brown) in summer in the St. Louis area. Many conditions can cause patches of brown, dead grass on your lawn, but only one gets the official name brown patch. Its noninvasive trait also means it works well as an edging plant because it won't leave its bounds. They grow best in the heat of summer and are dormant (turn brown) mid-October to mid- to late-May. Dozens of diseases and fungi can turn your lawn brown. Weather has been at the very least unpredictable for the past decade. “The temperatures are perfect and there’s more than enough free moisture for brown patch to infect turfgrass.” Brown patch is the Achilles’ heel of tall fescue, Miller said. Insects. To control it, do not fertilize fescue heavily in summer and if … Brown spots in tall fescue grass is often caused by a fungal disease called brown patch. Coarse and tough, fescue … Details 'Elijah Blue' forms small cushions of very fine, inrolled, intensely ice-blue leaves, becoming greener in winter. I watered just as much as my neighbors with fescue lawns. Homeowners should watch for the disease in vulnerable areas like shaded spots. If you want to get an early jump on the growing process you can plant the seeds in September after the heat of summer passes. Dormancy is a natural occurrence. Festucas should be trimmed annually during cooler months to keep up a neater appearance. The fescue will enter dormancy to preserve itself. In horticultural terms, dormancy equals brown. Bermuda grass is also a warm-season grass, but it can actually be cut far shorter—down to a half-inch, if desired, and up to two inches in height for the upper recommended limit. Chewings Fescue Grass. 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