Reed Canary Grass is an increasing problem in my area. It grows quite large, up to 6 feet tall, and forms an extremely dense, rhizomatous root mass that chokes everything else out. Not a good weed. However, in my country it only grows with water, so it tends to line the edges of canals, irrigation ditches, and drains, rarely extending more than a couple feet back from the bank and remaining in pretty well saturated soil. The problem it causes is that it grows into the waterway, catching dirt and silt in the water, until it closes off the waterway, and it forms such a dense root system it is very hard to cut and open up with a shovel--it is rapidly climbing on my list of hated plants. A strong dose of glyphosate will take care of it, sometimes it takes a couple repeats, though. Based on where it lives here (wet to saturated soils), I would ask whether your ground is too wet for the berries you want to plant? You may have to resort to raised beds, and if you do you could line the beds with heavy plastic. I would think laying plywood down for a growing season would probably remove it as well. Whatever you do, you will need to clear a much larger area than you intend to plant, then work diligently to keep it from creeping back in.

Theoretically, fescue seed will be viable - as long as you don't mow the lawn for months and let the seed mature. The fescue is probably a hybrid though, so it may not grow true from the second generation seed. As a practical matter though, it isn't a good way to improve your yard. While grass obviously seeded itself without human help for millenia, it didn't make nice, uniform lawns for suburbia all on its own. Your best bet it to mow, fertilize, and water properly now. Then, if the lawn still isn't looking great by late summer, you can start plans to overseed it again.

Most ornamental grasses which are reliably hardy in your zone, will create viable seed, from which you can grow more plants. However, grasses, especially variegated and specially colored named cultivars will probably not grow true to the special characteristics of the parent plant. I have hundreds of grasses which were grown from seed. Here's a partial list: Anthoxanthum odoratum.. Sweet Vernal Grass Briza maxima.. Annual Quaking Grass Briza media.. Quaking Grass Calamagrostis brachytricha..Fall Blooming Feather Reed Grass Carex comans 'Bronze Form'..Bronze New Zealand Hair Sedge Carex grayi.. Gray's Sedge Carex muskingumensis.. Palm Sedge Chasmanthium latifolium.. Northern Sea Oats Cortaderia selloana.. Pampas Grass Deschampsia caespitosa.. Tufted Hairgrass Elymus hystrix.. Bottlebrush Grass Eragrostis spectabilis.. Purple Love Grass Festuca gigantea.. Giant Fescue Festuca glauca.. Blue Fescue Festuca mairei.. Maire's Fescue Festuca scoparia.. syn. Festuca gautieri..Bearskin Fescue Helictotrichon sempervirens..Blue Oat Grass Hierochloe odorata..Sweetgrass, Holy grass Lagurus ovatus.. Bunny Tails - Annual Luzula nivea.. Snowy Woodrush Luzula sylvatica.. Greater Woodrush Miscanthus sinensis 'Central Park'..Maiden Grass Miscanthus sinensis.. 'New Hybrids'..Maiden Grass, Eulalia Grass Nassella tenuissima.. Mexican Feather Grass Panicum virgatum.. Switch Grass Panicum virgatum 'Strictum'..Switch Grass Pennisetum glaucum 'Purple Majesty'..Ornamental Millet..Annual Pennisetum alopecuroides.. Fountain Grass Pennisetum alopecuroides 'Moudry'.. Black Seeded Fountain Grass Pennisetum orientale..Oriental Fountain Grass Saccharum ravennae..Ravenna Grass Sesleria caerulea.. Blue Moor Grass Setaria faberi.. Giant Foxtail - Annual Sporobolus heterolepis..Prairie Dropseed Stipa capillata.. Feather Grass Tridens flavus.. Purple Top

Thank you for the speedy id. I've never seen this before. Think I will try to collect seed.