Festuca arundinacea

tall fescue

Poaceae Europe, North Africa, Western Asia

SunFull Sun – Part Shade

HardinessZones 4–8

Overview

Festuca arundinacea (syn. Schedonorus arundinaceus, Lolium arundinaceum) is a cool-season, bunch-type perennial grass in the Poaceae family, reaching 24-48 inches (60-120 cm) tall in unmowed stands, with a deep, fibrous root system extending 24-36 inches (60-90 cm) — deeper than most cool-season turfgrasses. Leaf blades are flat, coarse-textured, 0.25-0.4 inch (6-10 mm) wide, dark green, with prominent parallel veins and rough-textured upper surfaces with visible ridges (scabrous). Leaf sheaths are smooth, split, with short auricles at the junction of blade and sheath. The inflorescence is a contracted panicle 4-10 inches (10-25 cm) long, bearing spikelets with 3-10 florets each. Many turf-type cultivars harbour the endophytic fungus Epichloë coenophiala (formerly Neotyphodium coenophialum), which confers drought tolerance, insect resistance, and heat tolerance to the grass but produces ergot alkaloids toxic to grazing livestock — particularly cattle and horses — causing fescue toxicosis (vasoconstriction, reduced weight gain, elevated body temperature). Endophyte-free cultivars are available for pasture use. Turf-type cultivars carry narrower leaf blades, denser tillering, and darker green colour than forage types. The species tolerates heat, drought, foot traffic, and a wide range of soil types better than most cool-season grasses, which is why it is widely planted as the dominant turfgrass throughout the transition zone (USDA zones 6-7) of the United States where neither cool- nor warm-season grasses are fully adapted.

Native Range

Festuca arundinacea is native to Europe, North Africa, and western Asia. The species was introduced to North America in the early 1800s as a forage grass. It is now widely planted as a cool-season grass throughout the United States, covering an estimated 35 million acres, and has naturalised throughout temperate regions globally.

Suggested Uses

Planted as a lawn, sports turf, and erosion control grass throughout the transition zone (USDA zones 5-8) where summers are too hot for Kentucky bluegrass and winters too cold for bermudagrass. Turf-type cultivars ('Rebel', 'Titan', 'Kentucky 31' for pasture) are selected based on intended use. The deep root system supports low-irrigation lawns. In the Pacific Northwest, the species is commonly mixed with perennial ryegrass and Kentucky bluegrass for all-purpose turf.

How to Identify

Identified by the coarse-textured, flat leaf blades 0.25-0.4 inch (6-10 mm) wide with prominent upper-surface ridges, short auricles at the blade-sheath junction, smooth split sheaths, and the bunch-type (non-rhizomatous) growth habit. Separated from F. pratensis (meadow fescue) by the wider, coarser leaf blades and the presence of auricles. Separated from perennial ryegrass (Lolium perenne) by the rolled (not folded) vernation and the panicle (not spike) inflorescence.

Appearance

Size & Dimensions

Height3" - 4'

Width/Spread6" - 1'

Reaches mature size in approximately 1 years

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~3 weeks

Spring Summer

Contracted panicles emerge from May through June in the Pacific Northwest. Spikelets contain 3-10 florets each, shedding pollen by wind over a 2-3 week period. Seed matures by July. In managed turf, mowing prevents flowering entirely.

Detailed Descriptions

Flower Description

Green to straw-coloured panicle

Foliage Description

Dark green

Growing Conditions

Sun Requirements

SunFull Sun SunPartial Shade

Requires 4-10 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range5.5 - 7.5(Neutral)

357912

Soil Types

loam clay sand silt

Drainagewell drained

Water & Climate

Water Needs

Medium

Frost Tolerance

hardy

Time to Maturity

1 year to established turf

Drought Tolerance

Drought tolerant when established

Care & Maintenance

Care Guide

Seed is sown at 6-8 pounds per 1,000 square feet (290-390 g/m²) in early autumn (September-October) or early spring (March-April). Seed germinates in 7-14 days at 60-75°F (15-24°C). Mowing height is 3-4 inches (8-10 cm) for lawn use — taller mowing promotes deeper rooting and drought tolerance. Watering is 1-1.5 inches (2.5-4 cm) per week during active growth; the deep root system supports survival of extended drought through semi-dormancy. Fertilisation is 2-4 pounds of nitrogen per 1,000 square feet (100-200 g/m²) per year, split between autumn and spring applications. Thin areas are overseeded in autumn. Core-aeration annually in early autumn reduces compaction. Brown patch (Rhizoctonia solani) develops in hot, humid weather — evening irrigation is avoided to reduce incidence.

Pruning

Mowing is regular at 3-4 inches (8-10 cm) for turf use. No more than one-third of the blade height is removed per mowing. Clippings are left in place to return nutrients. In unmowed meadow or pasture settings, cutting 2-3 times per year prevents dominance of the stand by fewer, coarser tillers.