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The name Kentucky bluegrass derives from its flower heads, which are blue when the plant is allowed to grow to its natural height of 60 to 90 cm (2 to 3 feet). [9] Poa pratensis is the type species of the grass family Poaceae. Five subspecies are accepted. [10] Poa pratensis subsp. dolichophylla (Hack.) Portal – Corsica
Festuca (fescue) is a genus of flowering plants belonging to the grass family Poaceae (subfamily Pooideae). They are evergreen or herbaceous perennial tufted grasses with a height range of 10–200 cm (4–79 in) and a cosmopolitan distribution , occurring on every continent except Antarctica . [ 2 ]
Typhula blight is a major problem with cool season turfgrasses during winter months. These grasses include bentgrass, annual bluegrass, perennial ryegrass, fine fescue, and kentucky bluegrass. [1] Typhula blight is also commonly referred to as gray snow mold due to the gray colored patches found after snow has melted.
Lolium is a genus of tufted grasses in the bluegrass subfamily (Pooideae). [2] [3] It is often called ryegrass, but this term is sometimes used to refer to grasses in other genera. They are characterized by bunch-like growth habits.
Annual cool-season – wheat, rye, annual bluegrass (annual meadowgrass, Poa annua), and oat; Perennial cool-season – orchardgrass (cocksfoot, Dactylis glomerata), fescue (Festuca spp.), Kentucky bluegrass and perennial ryegrass (Lolium perenne) Annual warm-season – maize, sudangrass, and pearl millet
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Brown patch is most devastating to: Bentgrass (Agrostis sp.), ryegrass (Lolium sp.), Annual bluegrass (Poa annua), and Tall fescue (Festuca arundinacea). [2] Brown patch is also found in Kentucky bluegrass (Poa pratensis) and Fine fescue (Festuca sp.) but this is rare or does minimal [clarification needed] damage. [3]
These species of hosts can include creeping bentgrass, annual ryegrass, and perennial ryegrass. Some of its more common hosts include fine fescue, tall fescue, and Kentucky bluegrass. [7] Symptoms of the pathogen often manifest in all species the same way; as circular patches 6 inches to a foot in diameter of dead or damaged turfgrass. [6]