How to Choose the Right Grass Seed for Your Region
Establishing lush, healthy lawn grasses is a labor of love when you aspire to own a thick, beautiful lawn. Proper lawn maintenance, mowing and fertilization all help achieve your goal, but success also rests on the grass itself. Whether you're establishing a new lawn from scratch or overseeding an existing lawn, matching the best cool- or warm-season grasses to your grass planting zone is essential to the task.
Cool-season grasses thrive in northern regions with moderate summers and cool spring and fall seasons. But they can struggle in southern heat. Warm-season grasses flourish where summer temperatures run extra high, but they can't withstand northern winters. By choosing premium Pennington grass seed products suited to your grass seed planting zone, you can give your lawn the seed it needs to succeed:
ZONE A
Coastal Pacific Northwest lawns challenge grasses with cool, wet weather all season long. The cool temperatures and humidity west of the Cascades create conditions that favor the spread of fungal lawn disease. But some grasses, such as perennial ryegrass, naturally resist the diseases that strike grasses in rainy coastal winters. Grass research and breeding programs have developed improved varieties that build on these natural strengths.
Pennington Smart Seed Perennial Ryegrass Grass Seed and Fertilizer Mix contains improved grass varieties that conserve water, germinate quickly and resist lawn diseases. Pennington Smart Seed Pacific Northwest Grass Seed and Fertilizer Mix combines these grasses with cold- and shade-tolerant fine fescues for an optimal mix of grasses suited to the region.
Cool-season grasses such as Kentucky bluegrass, Kentucky 31 tall fescue and turf-type tall fescues also do well in cool northern lawns. For Pacific Northwest lawns with sun and shade, Pennington Smart Seed Sun and Shade Grass Seed and Fertilizer Mix combines shade-tolerant fine fescues, tall fescue, perennial ryegrass and Kentucky bluegrass.
For lawn areas with dense shade, Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix provides shade-tolerant tall and fine fescues that thrive in shady lawns.
Pennington grass seed recommendations for Zone A lawns
ZONE B
West Coast growing conditions vary significantly from northern California to the state's southern tip. With adequate irrigation, cool-season grasses can excel in the Mediterranean-like climate. Pennington The Rebels Tall Fescue Grass Seed Blend offers tolerance to cold, heat, drought and shade. Durable Pennington Smart Seed Kentucky Bluegrass Grass Seed and Fertilizer Mix creates a dense, lush lawn that requires up to 30% less water than ordinary seed.
Throughout California's central and southern regions, warm-season Bermudagrass offers full-sun lawns exceptional tolerance to heat, drought and heavy use. Pennington Smart Seed Bermudagrass Grass Seed and Fertilizer Mix germinates and establishes faster than Bermudagrass alone.
For West Coast lawns with sun and shade, Pennington Smart Seed Sun and Shade Grass Seed and Fertilizer Mix combines tall fescue, perennial ryegrass, Kentucky bluegrass and fine fescues suited to mixed lawns. Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix offers shade-tolerant tall and fine fescues ideal for lawns with as little as two hours of full direct sun.
Pennington grass seed recommendations for Zone B lawns
ZONE C
The Inland West and Northwest present diverse growing conditions. Temperature extremes, humidity, aridity and elevation all affect how well grasses perform in this grass planting zone. Cool-season grasses such as Kentucky bluegrass, tall fescue and perennial ryegrass do well in cool, arid inland areas from Montana westward, but adequate irrigation is essential.
Water-conserving Smart Seed mixes such as Pennington Smart Seed Kentucky Bluegrass Grass Seed and Fertilizer Mix and Pennington Smart Seed Perennial Ryegrass Grass Seed and Fertilizer Mix offer improved varieties that require up to 30% less water than ordinary grasses to keep your cool-season lawn looking its best.
East of the Cascade Mountain Range down through Nevada and Utah, drought-tolerant tall fescue grasses such as Pennington The Rebels Tall Fescue Grass Seed Blend stand up to the zone's challenges especially well. Fine fescues with exceptional cold and shade tolerance also excel, particularly at higher elevations.
If your lawn has both sun and shade, Pennington Smart Seed Sun and Shade Grass Seed and Fertilizer Mix combines shade-tolerant tall fescue, fine fescues, perennial ryegrass and sun-loving Kentucky bluegrass in an optimal sun-and-shade mix. For dense shade areas that receive just two to six hours of sun, go with Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix.
Pennington grass seed recommendations for Zone C lawns
ZONE D
Anchored in the country's center, the northern Plains States comprise part of the country's cool-season grass-growing region. A line of demarcation that roughly follows state lines between Iowa and Nebraska separates this arid western zone from more humid eastern states.
Cool-season grasses such as Kentucky bluegrass, perennial ryegrass and tall fescues flourish in this zone provided they get proper irrigation during dry weather. Improved grass varieties in Pennington Smart Seed Kentucky Bluegrass Grass Seed and Fertilizer Mix and Pennington Smart Seed Perennial Ryegrass Grass Seed and Fertilizer Mix require up to 30% less water than ordinary grasses once they're established. Drought-tolerant, deep-rooted tall fescues such as Pennington The Rebels Tall Fescue Grass Seed Blend and economical Kentucky 31 excel throughout this zone.
For lawns with sun and shade, Pennington Smart Seed Sun and Shade Grass Seed and Fertilizer Mix combines adaptable tall fescue, perennial ryegrass, Kentucky bluegrass and fine fescues. For lawns with dense shade in this zone, Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix provides a mix of tall fescue and fine fescues designed to thrive.
Pennington grass seed recommendations for Zone D lawns
ZONE E
The Upper Midwest states bordering the Great Lakes comprise a cool-season grass-growing region with humidity levels similar to the Northeast. Home to some of winter's record low temperatures, the region's seasonal fluctuations demand grasses that thrive in unpredictable cool climates.
Bluegrasses such as Pennington Smart Seed Kentucky Bluegrass Grass Seed and Fertilizer Mix dominate in this zone, but ryegrasses and fescues also do well. Deep-rooted turf-type tall fescues excel under droughty conditions. Durable perennial ryegrass naturally resists insects and disease. Pennington Smart Seed Perennial Ryegrass Grass Seed and Fertilizer Mix offers premium ryegrass varieties well-suited to Upper Midwest lawns.
If your lawn combines sun and shade, look to Pennington Smart Seed Sun and Shade Grass Seed and Fertilizer Mix for a combination of cool-season grasses designed to succeed with just four to six hours of sun. For difficult dense-shade areas, Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix provides a mix of tall fescue and fine fescues that flourish with as little as two hours of daily sun.
Pennington grass seed recommendations for Zone E lawns
ZONE F
Cool-season grasses such as bluegrasses, perennial ryegrass and fescues prevail in the Northeast region of the United States. Cold winters, cool summers and high humidity create challenging conditions for many plants here, including lawn grasses. Northeast lawns need grasses that prefer cool temperatures and naturally resist lawn diseases prevalent in this region.
Kentucky bluegrass flourishes throughout the Northeast, delivering finely textured, emerald-green lawns with the hardiness needed for cold northern winters. Innovations behind water-conserving Pennington Smart Seed Kentucky Bluegrass Grass Seed and Fertilizer Mix deliver increased shade tolerance, finer texture and desirable color.
Perennial ryegrasses provide early green-up even in cold Northeast springs. Pennington Smart Seed Northeast Grass Seed and Fertilizer Mix combines Kentucky bluegrass varieties with other cool-season grasses such as perennial ryegrass and tough, cold-tolerant fine fescues ideal for Northeast lawns.
For sun-and-shade lawns, Pennington Smart Seed Sun and Shade Grass Seed and Fertilizer Mix combines cool-season grasses that perform with as little as four to six hours of sun per day. For dense-shade lawn areas, Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix provides a shade-tolerant, cool-season mix designed to thrive with even less sun.
Pennington grass seed recommendations for Zone F lawns
ZONE G
Central region states and the Midwest's heartland combine cold winters and hot, humid summers. Cool-season grasses such as Pennington Smart Seed Kentucky Bluegrass Grass Seed and Fertilizer Mix flourish. Disease-resistant ryegrasses in Pennington Smart Seed Perennial Ryegrass Grass Seed and Fertilizer Mix stand up to high humidity that can favor lawn diseases. Tall fescues such as Kentucky 31 tall fescue thrive here.
Pennington Smart Seed Ohio State Grass Seed and Fertilizer Mix provides a drought-tolerant, disease-resistant mix of fine fescues, perennial ryegrass and Kentucky bluegrass ideal for cool-season Ohio lawns.
For lawns with sun and shade, Pennington Smart Seed Sun and Shade Grass Seed and Fertilizer Mix combines tall fescue, perennial ryegrass, Kentucky bluegrass and fine fescues suited to the climate. For lawn areas with dense shade, Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix provides a mix of tall fescue and fine fescues to thrive in cool-season lawns.
Pennington grass seed recommendations for Zone G lawns
ZONE H
South-central U.S. states form the western half of the challenging grass region lawn pros call the transition zone. Cool, warm, humid and arid climates all collide in this region. Winters are too cold for some warm-season grasses and summers are too hot for some cool-season types such as Kentucky bluegrass.
Tall fescue is a low-maintenance, heat-tolerant, cool-season grass used extensively in this zone. Pennington The Rebels Tall Fescue Grass Seed Blend withstands the region's heat and drought with 40% more roots than ordinary grasses. Warm-season Zoysia grass, more cold-tolerant than Bermudagrass, also warrants extensive use.
Deep-rooted, water-wise Zoysia stays green longer in fall than other warm-season grasses, then it greens up earlier in spring. Pennington Zenith Zoysia Grass Seed and Mulch retains its green color even longer than other Zoysia varieties.
For lawns with sun and shade in this challenging area, Pennington Smart Seed Southern Sun and Shade Grass Seed and Fertilizer Mix combines shade-tolerant tall fescue, perennial ryegrass and fine fescues designed for transition zone success. For lawns with dense shade areas, Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix provides a mix of tall fescue and fine fescues that thrive in shady lawns.
Pennington grass seed recommendations for Zone H lawns
ZONE I
The central tier of U.S. states from the Atlantic Coast westward constitutes the eastern half of the grass-growing region known as the transition zone. Cool northern climates meet warm southern climates here; humid and arid regions intersect as well. In this zone, some cool-season grasses struggle with summer heat. And some warm-season grasses succumb to winter cold.
Heat-tolerant, cool-season tall fescue is a favorite among transition zone homeowners and lawn professionals. Pennington The Rebels Tall Fescue Grass Seed Blend offers 40% more roots than ordinary grasses, delivering exceptional drought and heat tolerance.
Zoysia grass, a widely used warm-season alternative, combines drought tolerance with more cold tolerance than Bermudagrass. Pennington Zenith Zoysia Grass Seed and Mulch retains its green color longer in fall than other Zoysia varieties and greens up earlier than Bermuda in spring.
For transition lawns with sun and shade, Pennington Smart Seed Southern Sun and Shade Grass Seed and Fertilizer Mix combines shade-tolerant grasses that thrive with just four to six hours of daily sun. For lawn areas in dense shade, Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix thrives with as little as two hours of direct sun per day.
Pennington grass seed recommendations for Zone I lawns
ZONE J
Heat and humidity in the Southeast region create a warm, humid zone that stretches west from the Atlantic. Bermudagrass is the leading lawn grass in this warm-season grass planting zone where tolerances for salt, heat and drought excel. Zoysia grass also suits this zone, especially where unexpected cold spells hit.
Pennington Smart Seed Bermudagrass Grass Seed and Fertilizer Mix offers full-sun lawns exceptional heat and drought tolerance and establishes faster than Bermudagrass alone. To give dormant winter Bermudagrass lawns temporary winter color, fall overseeding with perennial ryegrasses or Pennington Annual Ryegrass Grass Seed keeps winter grass green.
Where high heat and humidity intensify, Bahiagrass and Centipede grass provide lawn owners with more options. Pennington Argentine Bahiagrass Grass Seed teams finer texture with durability and drought resistance. Low-maintenance, weed-resistant Pennington Centipede Grass Seed and Mulch prefers full sun but tolerates shade better than Bermudagrass.
Pennington grass seed recommendations for Zone J lawns
ZONE K
The coastal conditions of central and southern Florida demand grasses that can take high humidity along with heat. Extremely drought- and heat-tolerant, Bahiagrass and Centipede grass offer attractive low-maintenance choices. Salt-tolerant Bermudagrass, such as Pennington Smart Seed Bermudagrass Grass Seed and Fertilizer Mix, offers exceptional heat and drought tolerance for homeowners looking for more traditional lawns.
Sun-loving Pennington Pensacola Bahiagrass Grass Seed is bred especially for bright coastal lawns and hot conditions. It thrives even in poor soil. Low-growing and low-maintenance Pennington Argentine Bahiagrass Grass Seed offers improved density and deeper color.
Slow-growing Centipede grasses, such as Pennington Centipede Grass Seed and Mulch, typically stay green year-round in this zone's warm climate. Centipede prefers full sun, but it tolerates more shade than Bermudagrass allows.
Keep your dormant non-Centipede lawn looking green all winter by overseeding with perennial ryegrasses or Pennington Annual Ryegrass Grass Seed for temporary green winter grass. For lawn areas with dense shade, Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix helps keep shady areas green.
Pennington grass seed recommendations for Zone K lawns
ZONE L
The diversity of Texas soil and weather provide special challenges for turf grasses. But wherever you live in the state, one thing is constant: Heat and drought tolerance are essential to lawn grass success. Resilient, deep-rooted and drought-tolerant, warm-season Bermudagrass and Zoysia grass are leading choices for Lone Star lawns.
Pennington Smart Seed Texas Bermudagrass Grass Seed and Fertilizer Mix is designed specifically for full-sun lawns with eight or more hours of Texas sun each day. Dense and durable, this innovative grass mix includes a temporary, cool-season companion grass that provides stability and early color as your Bermudagrass establishes.
For areas with cooler temperatures, Pennington Zenith Zoysia Grass Seed and Mulch offers greater cold tolerance than Bermudagrass. Zoysia stays green longer in fall and greens up earlier in spring as well. To keep your dormant Bermuda or Zoysia lawn green in winter, overseed with perennial ryegrasses or Pennington Annual Ryegrass Grass Seed in fall.
For Texas lawns with sun and shade, Pennington Smart Seed Southern Sun and Shade Grass Seed and Fertilizer Mix provides a mix of shade-tolerant grass to keep shady areas looking prime. If your lawn has dense shade, Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix thrives with as little as two hours of Texas sun per day.
Pennington grass seed recommendations for Zone L lawns
ZONE M
The warm, arid Southwest region presents extreme challenges to turf grasses in low- and high-desert climates. This planting zone combines saline water and alkaline soil with intense sunlight, high temperatures and varying elevations.
Resilient Bermudagrass is widely used in the region, but sufficient watering is essential in the desert climate. Pennington Smart Seed Bermudagrass Seed and Fertilizer Mix creates a dense, durable lawn that flourishes under the Southwestern sun and resists drought, insects and diseases common to the region. Deep-rooted, drought-tolerant Pennington Zenith Zoysia Grass Seed and Mulch provides added cold tolerance — especially helpful at higher elevations in the zone.
To keep dormant winter Bermuda or Zoysia grass lawns looking green, fall overseeding with Pennington Annual Ryegrass Grass Seed or perennial ryegrasses can add temporary green winter lawn color.
For Southwest lawns with sun and shade, Pennington Smart Seed Southern Sun and Shade Grass Seed and Fertilizer Mix offers a mix of shade-tolerant grasses to suit areas that receive four to six hours of daily sun. Dense shade areas call for Pennington Smart Seed Dense Shade Grass Seed and Fertilizer Mix. This mix thrives with as little as two hours of daily sun.
Pennington grass seed recommendations for Zone M lawns
Sources:
1. Rutgers University New Jersey Agricultural Experiment Station, "Seeding Your Lawn," February 2004.
2. University of Nevada Cooperative Extension, "Maintaining Bermudagrass Lawns in the Mojave Desert," 2010.
3. Oregon State University Extension Service, "Retail Lawn Seed Mixtures for Western Oregon and Western Washington," November 2014.
