I should be a large image.

Closeup photo of lawn grasses

Claves para el éxito

  • Mantenga las condiciones de crecimiento adecuadas para que el césped sea fuerte y saludable. Un césped saludable resiste el musgo, las malas hierbas, los insectos y las enfermedades.
  • Los métodos de mantenimiento del césped habituales incluyen: cortar el césped, quitar las malas hierbas, fertilizar, resembrar y regar. También ayuda quitar el césped y airearlo.
  • El césped cambia con el tiempo. Después de sembrar las semillas o colocar el césped, se desarrollará una mezcla de hierbas y malezas de hoja ancha deseadas, malezas herbáceas y musgo.
  • El drenaje del suelo, la fertilidad del suelo, la luz solar, el estrés hídrico y el modo en que se cuida y se utiliza el césped influirán en el aspecto que tendrá con el tiempo.
  • Establezca expectativas realistas para su césped. Haga coincidir los estándares de césped que desea mantener con el programa de mantenimiento adecuado.
  • Si la calidad de su césped no coincide con sus estándares, considere renovarlo.

Prevenir problemas en el césped

Consulte Cómo prevenir problemas en el césped para obtener más información sobre cómo mantener su césped saludable. Las hierbas sanas de su jardín superan al musgo y las malas hierbas y también resisten los daños causados ​​por plagas de insectos y enfermedades de las plantas.

Musgo en tejados y pasarelas

Consulte Cómo deshacerse del musgo en techos y pasillos para obtener más información sobre el musgo en superficies duras.

Malezas y musgo en el césped
Mix of broadleaf weeds in lawn

Weston Miller, Oregon State University

Do you Have a Mix of Broadleaf Weeds in Your Lawn? Control for all these weeds is similar. See sections 4 and 5 for details.

  • Broadleaf plants have soft leaves with net-like veins.
  • One or more leaves grow from nodes on stems.
  • They often have showy flowers.
  • Common broadleaf weeds that grow in lawns are shown here
Dandelion seed head

Joseph O'Brien, USDA Forest Service, Bugwood.org

Catsear (Hypochaeris radicata)

  • Catsear plants live more than two years (perennial).  
  • It grows in lawns, landscapes, roadsides, and sidewalk cracks.
  • When mowed, its yellow flowers and texture stand out in lawns.
  • It dominates an area when left unmanaged.  
  • Catsear benefits pollinators such as honey bees.

How to Identify Catsear / False dandelion

  • It grows long, slender, branching stems with yellow flowers 24-32 inches from the ground.
  • The leaves are less jagged and more textured than dandelion’s leaves.
  • Catsear forms seed head with floating seeds.
Clover leaves

Bruce Ackley, The Ohio State University, Bugwood.org

White Clover (Trifolium repens)

  • White clover plants live more than two years (perennial).  
  • It spreads aggressively by seeds and creeping stems. It forms dense patches.
  • When mowed, it mixes into the lawn grasses.
  • White clover dominates an area when left unmanaged.  
  • These nitrogen-fixing plants grow in low nutrient soil conditions.
  • White clover benefits pollinators such as honey bees.

How to Identify White Clover

  • It grows as a dense, spreading clump.
  • White clover leaves have 3 crescent-shaped leaflets with a white watermark.
  • The white flowers attract bees.

Broadleaf Weeds in Lawns

Many species

Common broadleaf weeds (soft stems and leaves) in lawns include dandelion, clover, creeping buttercup, and many others. Minimize these weeds in your lawn by growing thick, robust grasses. Physically remove weeds as needed. Lawn-specific herbicides kill broadleaf weeds and don’t harm grasses when label instructions are followed. Follow up by reseeding areas where you have removed weeds.

Action Optional
Crabgrass in lawn

Yesim Sahin, iStock

Annual bluegrass

Ian_Redding, iStock

Bentgrass patches in lawn

Weston Miller, Oregon State University

Grassy Weeds in Lawns

Many species

Common grassy weeds (which grow from their base and have parallel leaf veins) include crabgrass, annual bluegrass, creeping bentgrass, and quackgrass. Minimize grassy weeds in your lawn by growing a thick, robust lawn. Physically remove grassy weeds as needed. Herbicides effectively control grassy weeds when label instructions are followed. Follow up by reseeding areas where you have removed weeds.

Action Optional
Closeup of moss and grass mixed

Weston Miller, Oregon State University

Thick carpet of moss with sparse grass

mtreasure, iStock

Mossy lawn area in shade

Weston Miller, Oregon State University

Moss in Lawns

Several species in the Pacific Northwest

Moss in lawns stands out from grasses. It has a different color and texture. Scrape out moss to expose the soil and reseed grasses. Moss-killer products work to control moss in lawns. However, you still have to scrape it out and reseed. If you don’t change the conditions that favor moss, it will regrow.

Action Optional
Plagas de insectos y enfermedades en el césped

En el caso de plagas de insectos y enfermedades de las plantas en el césped, es útil determinar qué tipos de césped crecen en su césped:

  • Los diferentes tipos de césped que crecen en los céspedes del noroeste del Pacífico son susceptibles a diferentes plagas de insectos y enfermedades de las plantas.
  • Vea cómo identificar las especies de césped a continuación.
Leatherjacket crane fly larva

"Leatherjacket" by Simon is licensed under CC BY-NC 2.0.

“Leatherjacket”by Simon is licensed under“CC BY-NC 2.0”.

Adult billbug on grass blade

Kansas Department of Agriculture, Bugwood.org

Cutworm larva next to cut grass stem

W.M. Hantsbarger, Bugwood.org

Insect Pests in Lawns

Many species

Learn to identify insect pests and their damage to lawns in the Pacific Northwest. Insect pests vary by the type of grass in your lawn and the climatic region (east and west of the Cascade Mountains). Growing a healthy lawn is the best way to minimize damage from insects. Find solutions for insect pests in your lawn.

Action Optional
Red thread fungal filament

Bruce Watt, University of Maine, Bugwood.org (cropped)

Dollar spot symptom on grass blades

Florida Division of Plant Industry , Florida Department of Agriculture and Consumer Services, Bugwood.org (cropped)

Plant Diseases in Lawns

Many species

Learn to identify plant diseases and their damage in lawns to the Pacific Northwest. Plant diseases vary by the type of grass in your lawn and climatic region (east and west of the Cascade Mountains). Growing a healthy lawn is the best way to minimize damage from plant diseases. Find solutions for plant diseases in your lawn.

Action Optional

Free Help Identifying Lawn Problems

Get expert pest management info and advice online from OSU's Ask Extension.
Get Help
Lesiones por orina de perro, anillos de hadas de hongos y lombrices de tierra en el césped
Dog injury on lawn
Fence to exclude dogs from lawn

fotoVoyager, iStock

Dog Urine Injury

Dog urine on lawns can burn grass leaves and form a yellow mark as shown in the photo (left). The grasses will regrow eventually. The dog urine fertilizes the grasses. If you can’t tolerate dog urine spots on your lawn, exclude dogs from your with a fence as shown in the photo (right).

Mushrooms growing in a circle in lawn

"Hexenring in Freiberg" by unukorno is licensed under CC BY-SA 2.0.

A ring or semi-circle of mushrooms growing in a lawn is the most noticeable sign of a fairy ring.

Dark green grass rings

The fungus breaks down organic matter and produces nitrogen. This feeds the nearby grass, creating a dark green ring.

Mushroom fairy ring with green grass and bare area

"Turf fairy ring" by Scott Nelson is licensed under CC0 1.0

There may be an area of brown, dying grass inside the ring of dark green grass. Broadleaf weeds and grassy weeds may invade the damaged lawn area.

Mushroom Fairy Rings

Several species of fungi cause fairy rings

Mushroom fairy rings are caused by many species of fungi. They can grow in any type of grass. Rings of mushrooms appear in the spring or fall when the soil is moist. They feed on decaying organic matter like thatch, dead tree roots or bark mulch. This decay releases nitrogen. This causes the grass to grow dark green in a contrasting ring. Fairy rings can prevent water from penetrating to the roots of the grass, weakening or killing it. Broadleaf weeds and grassy weeds may invade the center of the ring. Fairy rings may disappear suddenly.

Action Optional

Earthworms in Lawns

Lumbricus terrestris

Earthworms may disturb lawn grasses by digging under new grass seedlings. Their burrowing creates small mounds on the soil surface. Weeds may sprout and grow in bare soil.

Take Action?

  • Tolerate earthworms in lawns. They are a sign of healthy soil.
  • Rake earthworm casting piles to flatten them. Apply grass seed to fill in gaps.
  • There are no pesticides available for earthworm control.
Action Optional
Cómo identificar las especies de césped del noroeste del Pacífico

Raigrás perenne, festuca fina y festuca alta

Los principales tipos de pastos plantados en el noroeste del Pacífico incluyen:

  • Raigrás perenne
  • Festuca fina (rastrera, masticadora, dura y ovina)
  • Festuca alta

Estas especies de pasto crecen como gramíneas en matas sin rizomas (raíces extendidas) ni estolones (tallos extendidos). Es necesario volver a sembrar para mantener una densidad denso.

Perrenial ryegrass stand with car keys for comparison

OSU Turfgrass Management Program

Hand holding perennial ryegrass clump

OSU Turfgrass Management Program

Hand holding individual ryegrass plant

OSU Turfgrass Management Program

Perennial Ryegrass

Lolium perenne

Perennial ryegrass has a dark-green color and fine texture. The backside of leaves is shiny. Leaf blades are tapered.

Fine fescue stand with car key for comparison

OSU Turfgrass Management Program

Hand holding fine fescue clump

OSU Turfgrass Management Program

Hand holding individual fine fescue plant

OSU Turfgrass Management Program

Fine Fescue

Festuca spp.

Fine fescues include creeping, Chewings, Hard, and Sheep fescues. They have a gray-green to dark-green color with a very fine texture.

Tall fescue stand and key for comparison

OSU Turfgrass Management Program

Hand holding tall fescue clump

OSU Turfgrass Management Program

Hand holding individual tall fescue plant

OSU Turfgrass Management Program

Tall Fescue

Festuca arundinacea

Tall fescue has a dark-green color and a coarse texture.

Poa anual y agrostis rastrera

Además, muchos céspedes contienen pastos que crecen por sí solos, entre ellos:

  • Poa anual
  • Poa rastrera

¿Debo tomar medidas?

  • Ambas gramíneas se destacan entre los céspedes que contienen principalmente raigrás perenne, festucas finas y festucas altas.
  • Determine si puede tolerar la poa anual y la agrostis rastrera en su césped. Son difíciles de controlar.
  • Si decide tomar medidas contra el pasto azul anual y/o el pasto bentgrass, consulte Malezas graminosas en céspedes.
Flowering annual bluegrass

Ian_Redding, iStock

Hand holding annual bluegrass clump

OSU Turfgrass Management Program

Hand holding individual annual bluegrass plant

OSU Turfgrass Management Program

Annual bluegrass

Poa annua

Annual bluegrass is yellow-green in color. It forms green to purple flowers (left photo) in the fall, winter, and spring. Annual bluegrass leaf tips are scooped up like the bow of a boat.

Thick stand of bentgrass

Ikbal Salehe, iStock

Hand holding creeping bentgrass clump

OSU Turfgrass Management Program

Hand holding individual creeping bentgrass plant

OSU Turfgrass Management Program

Creeping Bentgrass

Agrostis stolonifera

Creeping bentgrass is bright-green in color with a very fine texture (left photo). It is a low-growing grass with spreading stems (stolons) above the soil line.

Teaser Image Hover
Problemas con el césped