Brown Spots on Leaves
Brown spots on leaves can result from fungal infections, bacterial issues, watering problems, or physical damage. The pattern of spots helps identify the cause.
Mogliche Ursachen
Fungal Leaf Spot
Why: Fungal spores land on wet leaves and develop into brown spots, often with a yellow halo.
Signs to check: Circular brown spots with yellow margins, often on lower leaves first, spots may have concentric rings.
Bacterial Leaf Spot
Why: Bacteria enter through leaf pores or wounds, causing water-soaked spots that turn brown.
Signs to check: Irregular, water-soaked spots that dry to brown, may have a yellow border, can be slimy.
Inconsistent Watering
Why: Alternating between very dry and very wet stresses the plant, causing leaf damage.
Signs to check: Random brown patches, especially on leaf edges and tips, soil moisture fluctuates greatly.
Sunburn
Why: Direct sun on sensitive plants causes localized brown, dry patches.
Signs to check: Brown spots only on the side facing the light source, spots are dry and papery.
Was prufen
- 1Examine the shape and pattern of the spots — circular or irregular?
- 2Check if spots have a yellow halo or water-soaked appearance
- 3Review watering consistency over the past few weeks
- 4Assess light exposure — could it be sunburn?
- 5Check if spots are spreading to other leaves
Was du tun kannst
- Remove severely affected leaves to limit spread
- Avoid getting water on the foliage when watering
- Improve air circulation around the plant
- Maintain consistent watering habits
- For fungal issues, a copper-based fungicide may help as a last resort
Wann Hilfe suchen
- Spots are spreading rapidly across the plant
- Large portions of leaves are covered in brown patches
- Spots appear slimy or have a foul odor (bacterial infection)
Wichtigste Erkenntnis
The pattern and texture of brown spots are important clues. Fungal spots tend to be circular; bacterial spots tend to be irregular and water-soaked.
Genesung in der App verfolgen
Protokolliere Fortschritte, stelle Erinnerungen ein und erhalte KI-gestutzte Diagnosen.
Quellen: NC State Extension, Missouri Botanical Garden, RHS. Inhalte zusammengestellt aus offentlich zuganglichen Gartenbaupublikationen zu Bildungszwecken. Quellorganisationen werden nur zur Transparenz aufgefuhrt und implizieren keine Unterstutzung.