Detect lawn diseases - List of common turf problems

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Lawn - meadow - grass

slime molds (Mycetozoa or Eumycetozoa)
  • Season: Ideal growth conditions on poorly ventilated lawn in the summer months, v. a. in damp and warm weather

  • Reason: Fungi decompose organic matter in the soil (such as wood or root scraps) and should do so as long as the fungal fur remains in the ground. Occasionally these, in contrast to the witch-mushrooms harmless destructors come to the surface partially

  • symptoms: Underground spreading without symptoms, when the fungus comes to the surface, fruiting bodies (slime-like deposits in yellow, orange or violet) put on the stalks, until a grassy surface covered with streaky surface develops

  • Fighting / prevention: Slime molds disappear by themselves or after days or weeks and cause no damage; only for humans a disease which classifies every easily exuberant natural phenomenon as disease; for the remainder an indication that the oxygen supply of the soil is limited and the lawn needs more air, so that it is sufficiently supplied with nutrients

snow mold (Microdochium nivale / Gerlachia nivalis)
  • Season: September to March, first signs despite infestation in the autumn often only after the snowmelt in the spring recognizable

  • Reason: Fungal disease, wet rot, affects overfertilized (nitrogen fertilization in autumn), compacted soil (wetness) and high temperature fluctuations weakened plants

  • symptoms: 3-4 cm large, circular, brownish spots that grow to 30 cm and can connect to larger contiguous areas. In high humidity gray-white to pink mycelium on the edge (also as mixed infection with Typhula)

  • Fighting / prevention: Heals on warmth by itself, preventive measures are regular not too deep mowing (maximum 1/3 of the half-length), pay attention to well drained soil, balanced fertilization (kaliumbetont in autumn), leaves and grass clippings remove

Sommerfusarium (Fusarium spp.)
  • Season: June to September at temperatures above 25° C and high humidity

  • Reason: Fungal disease infested by e.g. one-sided fertilization, compacted soil, lawn felt, dryness weakened grasses

  • symptoms: Surfaces become light green and later turn light brown to reddish brown, at high humidity reddish fungal mycelium can be seen on the edge, while regeneration from the middle ring or eye formation

  • Fighting / prevention: Heals itself in case of heat and dryness, preventive measures like snow mold

Typhula blight (Typhula incarnata), Wurzelhalsfäule (Gray snow-white)
  • Season: November to March at temperatures around 0° C

  • Reason: Fungal disease, dry rot, weak plants due to over-fertilization (nitrogen fertilization in autumn), compacted soil (wetness)

  • symptoms: Irregular (light) brown spots up to 50 cm, light gray fungus like Microdochium nivale when wet, but leaves are dry and papery (also mixed infection with snow mold)

  • Fighting / prevention: Heals on warm temperatures by itself, preventive measures like the snow mold

Lawn - meadow - recreate grass

  • Season: possible all year round if the ground is not frozen

  • Reason: poor irrigation, in case of repeated occurrence possibly wrong turf seed mixture

  • symptoms: Straws become light green, flabby, yellow, dry

  • Fighting / prevention: Irrigate lawns properly (not in sun, sufficient at longer intervals instead of more often little), in case of lack of rooting accumulate soil, turf in full sunshine with suitable grasses occupy (possibly by reseeding possible)

Pointed mosquitoes larvae (Tipula spec.)
  • Season: August, September, April, May, v. a. in well-moistened lawns with nice loose soil

  • Reason: Wiesenschnaken want to reproduce and need good, moist, loose soils, "so that the children have it well"

  • symptoms: Root wasting causes individual bright spots with slightly reduced growth and at the same time a strong loosening of the soil, which no machine would achieve in such a gentle way

  • Fighting / prevention: Can be combated in rare, extreme mass infestation with nematodes (control with pesticides is not allowed), but here applies mutatis mutandis to the listed May cockroach grub. Haarmücken (Bibio spec.) Act similarly, but hardly damage and are almost completely flown out before any idea of ​​combat.

In summary, it is noticeable that all lawn diseases and turf problems only turn into visible annoyance if the turf is incorrectly positioned, false ground under the turf, wrong turf mix for the given location, improper diet or improper treatment of the grass plants.This in turn means that you save a lot of time on information on and control of lawn diseases, if you sufficiently (before planting the lawn) find out what grass plants need to grow together to a lawn that willingly and easily thrives in the surrounding nature,

Video Board: Dollar Spot Lawn Fungus | Disease Control and Prevention.

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