‘Karl Foerster’ is hardy in USDA Hardiness Zones 5 to 9, but south of Zone 7 it’s not at its best. In compacted soil, air and water cannot move freely so plant growth suffers. No need to register, buy now! Blooms two to three weeks earlier than common feather reed grass. Hi Marie, yes, I think there is a good chance your grasses will regrow if you cage them for protection. I cut all ornamental grasses back as close to ground level as is practical. Hi Catherine, I bought 4 plants in early spring last year at our local home improvement store. Yep, last year’s growth. Cutting down the plant will not help the widening problem; that’s just the way most ornamental grasses grow over time. Sunny open spot. This outstanding selection of Feather Reed Grass stands a slender 4-5_ tall and adds a wonderful vertical element to the garden. It is, however, important to cut them back before they start growing again in the spring. Pruned to 4" above the soil. Most grasses do best with a weekly inch of rain or drip irrigation, which, when directly applied to the roots, lessens the chance of fungal diseases. 'Karl Foerster' feather reed grass (Calamagrostis x acutiflora 'Karl Foerster') 'Karl Foerster' is a trouble-free, 4- to 5-foot upright grass that is stunning when massed or singled out as a vertical statement. You can either plant the remaining sections in another location, pass them along to a friend, or compost them. Do you think they were tagged wrong? ‘Karl Foerster’ Feather Reed Grass (Calamagrostis x acutiflora ‘Karl Foerster’) With a narrow, upright form and dramatic buff-colored seed heads, ‘Karl Foerster’ is an excellent choice to plant as a screen, along the side of the house or bordering property fences. Give cutting back to the ground a try for beautiful results next summer. Blooms well in light shade, and actually appreciates some part afternoon shade in hot summer climates such as the St. Louis area, but generally tends to produce fewer flowers and develop floppier foliage as the amount of shade increases. They are mature 5+ years old and have had the gardner and myself leave 6-8″ stalks as that is the original info I found for care on the web. Big and little bluestem and ‘Karl Forester’ feather reedgrass also get rust. As far as when, with maiden grass (porcupine grass) and Prairie Sky switch grass, they both green up quite late in Colorado. dried calamagrostis acutiflora karl foerster in late winter with many seeds on it, ornamental grass karl foerster with brown dried stalks Karl foerster grass. Will it hurt them if I cut them about 1/2 way down now. Hi Catherine. (oct. Michigan). I just cut back our Karl Foerster yesterday, and I left 6-8″ because about 4-5″ of new growth is already there and I was concerned about cutting the tops of the new growth. Ornamental grasses grow in clumps or bunches alongside perennials and trees and can be used to create privacy, a wind barrier or a textured backdrop. Karl Foerster Grass, Calamagrostis x acutiflora, is a cool season ornamental grass that makes a great contrasting element with low growing flowering shrubs and perennial plants.The Karl Foerster ornamental grass can be uses as a specimen, for borders or as hedges or screens and makes a good backdrop for colorful shrubs such as roses. The result is a mixture of brown stubs and green growth. Thousands of new, high-quality pictures added every day. After fall's first hard freeze, the plants usually die back, but they are still quite decorative, even in their dried state. After all, which actions you take in spring will affect how healthy and attractive these plants are down the road. We built a home 16 months ago, and had all new landscaping put in last spring and we continued to add through summer – we live in the mid-west. (do this early, Calamagrostis is a cool season grass and will green up quickly) flower plumes pinkish to start turning tan, great for dried arrangements blooms in June provides motion in the garden . Just noticed middle disappearing in a couple days time. The first option is to leave it until next spring, when you can cut it down to the ground. Do not let the roots dry out. Pruned to 4" above the soil. Particularly hardy varieties include purple fountain grass and Karl Foerster feather reed grass. Hi Holly, I think either way is okay, especially since they are new plants. That’s why I recommend removing them as close to the ground as possible between February and March. Thank you for your help! My Feather Reed Grass Is Turning Yellow - I pruned it in March. Karl Foerster grasses are quite hardy. Deciduous grasses, which turn a golden, straw brown rather than necessarily lose their leaves, need different treatment from those with are evergreen. Thanks for the info on cutting back Karl Foerster. ‘Karl Foerster’ Feather Reed Grass (Calamagrostis x acutiflora ‘Karl Foerster’) A clump-forming ornamental grass, the foliage usually grows up to 2 feet with the flower stalks towering over them at heights of 5-6 feet in spring. Mexican Feather Grass. 8. It’s pricey and VERY stinky, but will work if you don’t want to look at caged grasses all spring. Cool-season grasses thrive in 60 to 75-degree temperatures in April, May, September and October, while warm-season grasses do better in 80 to 95-degree temperatures during the peak of summer and into early fall. Also, sometimes Karl Foerster won’t flower if it doesn’t get enough water (which stunts it). The interesting this is, is that some of their plumes grow tall, and some have smaller plumes in regards to height. Use stalks as cut flowers. Buy Karl Foerster Grass here at Greenwood Nursery. Calamagrostis x acutiflora 'Karl Foerster' has green leaves with reddish flowers. There is a cultivar called ‘Overdam’ that is a bit shorter, but you would notice white stripes along the edges of the leaves. It came back up great. So, I try to get to it by April 1 depending on how warm the spring is. This choice will leave you with a few brown stems throughout the summer, but you can cut them to the ground next spring. Feather reed grass is a cool-season plant and will be one of the first ornamental grasses in your garden to shoot up come spring (it will also be one of the first to go to seed). I doubt that it’s a different variety. The first two years they were mostly perferctly upright, with green stems and eventually some light brown seed heads. Calamagrostis × acutiflora 'Karl Foerster' Feather reed grass. In my experience, Karl Foerster feather read grass needs to be divided every 3-5 years in Colorado to stay vigorous. Calamagrostis x acutiflora 'Karl Foerster' - Feather Reed Grass. I’ve seen them decimate Karl Foerster, blue avena grass, blue grama, switchgrass, Kentucky bluegrass, buffalograss, you name it. It will just be a mound of leaves. They usually don’t kill the grass, but keep it mowed so short it can’t ever gain any height. Karl Foerster Feather Reed Grass is a fast-growing, spreading grass forming slightly arching clumps of narrow green foliage. © 2020 Colorado Yard Care. Hi, I'm Catherine Moravec. Should these blades be trimmed? Michelle Nati has written articles for the Farmer's Almanac, Family Minded.com, Ranker.com and holds a B.A. Keep in mind the brown stalks are completely dead. I guess patience really can be a virtue. Q. I’m sure there are others out there with the same problem that would love to hear your results! They were young plants approximately 12-18 inches tall and during transport home in an open truck many of the grass blades were bent from wind. Deciduous Shenandoah Switch Grass; Native, upright grass that develops red tones in the summer turning burgundy in fall. At only 18 inches wide and up to 5 feet tall, a grouping creates a dramatic vertical element in gardens. Mites are too small to see with the naked eye but the grass will show evidence of their presence in the webbing the mites leave on the plants. I fertilized it ... Q. Create stunning vertical effects with feathery flower spikes that emerge reddish-brown in spring and turn golden to buff in fall. Planting Karl Foerster Grass In The Ground - Can I plant Karl Foerster grass in the ground, leaving the pot intact except for the bottom? Mice damage on grasses It might be worth really inspecting the leaves to see if they look close to Karl Foerster leaves, meaning emerald green, outward arching, about 1/4 to 1/2 inch wide. Keep foliage dry, avoid overhead watering and improve air circulation around plants to avoid rust. Karl Foerster Feather Reed Grass is a hardy, easily grown grass that is one of the most popular of all the ornamental grasses. It’s a matter of personal preference. It will have to use it’s energy reserves to grow new leaves when it should be growing new roots. Feather Reedgrass. Thanks for letting me know. Hardy throughout USDA Zones 4 through 9. Plant form: Deciduous, upright, clump-forming grass. Here is an example of how to prune an unsightly Mexican Feather Grass (Nassella tenuisssima), a popular, low-maintenance and low-water-use grass. Striking pinkish-bronze flowering spikes in summer turn to brown in fall. Height: ... Other Notes: The blue-green foliage begins to take on scarlet red tones in late summer, turning a deeper red-purple through the fall. Should I wait until February to cut the leaves down to the ground. Karl Foerster feather reed grass (Calmagrostis x acutiflora ‘Karl Foerster’) is an excellent specimen around ponds, water gardens, and other moisture laden sites. One idea to consider is to cut off the top 6 inches or so to make them stand up a little better, but I would try to leave most of the blades in place even if they are damaged. Thrives in wet soils, yet tolerates drier conditions. They are identifiable by one of six forms: tufted, mounded, upright, upright divergent, arching or upright-arching, with the lowest grasses tufted and the highest upright arching. If you have sites with fewer than 6 hours of sun, I’d recommend Korean feather reed grass (Calamagrostis brachytricha), which can bloom in full shade if watered regularly. Resistant Varieties Some types of ornamental grasses are less vulnerable to brown tips than others. (Image by Jessie Keith) Feather reed grass (Calamagrostis x acutiflora ‘Karl Foerster’) is an upright grass so tough that it will even succeed in an area with air pollution, clay soil, and nearby black walnut trees. I find that works the best in terms removing all the old growth. Create a stunning vertical effect with feathery stalks that emerge reddish brown in spring and turn a rich golden color in fall. Ornamental grass problems are usually evident in the changing color of of a plant's leaves. Its foliage is dark green which turns to a golden brown in the fall. Karl Foerster needs at least 6 hours of sun to bloom well. Keep foliage dry, avoid overhead watering and improve air circulation around plants to avoid rust. Could they be eating? The next day, try to stick and hand trowel or shovel in the soil. Full sun. It needs to be watered at least twice per week, usually. Helping you create a more beautiful, functional and sustainable yard along Colorado's Front Range, Click to email this to a friend (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Pinterest (Opens in new window), Top Five Flowering Perennials for Colorado’s Front Range, cutting back Karl Foerster feather reed grass, Using Frost Blankets to Protect Plants from Freezing. SUMMER In mid-summer ‘Karl Foerster’ develops lacy stem tips. Once you start to see new leaves growing, it’s fine to cut off the ugly ones. Q. Semi-evergreen perennial; sterile seeds. The cage needs to be about two feet tall. Mexican Feather Grass. The plant stays golden beige through winter. Pennisetum alopecuroides Zones 5-8 This stunning grass ranges from 2' to 3' tall and grows in the form of a mound. Big and little bluestem and ‘Karl Forester’ feather reedgrass also get rust. 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