Laburnum anagyroides · Tree
Aphids: Squash by hand or use a strong jet of water; apply insecticidal soap if infestations are severe.
Powdery mildew: Improve air circulation by pruning; apply a fungicide if necessary and avoid overhead watering.
Silver leaf: Prune out infected branches well below the visible symptoms and burn them to prevent spread.
Honey fungus: Improve drainage and soil health; remove infected roots and avoid replanting susceptible species nearby.
Leaf-mining insects: Rake up fallen leaves to reduce overwintering populations; severe cases may require insecticide.
Snails and slugs: Use physical barriers like copper tape or apply iron phosphate-based slug pellets around the base.