Agave filifera · Succulent
Root rot: Ensure excellent drainage with gritty compost and avoid overwatering, especially in winter.
Scale insects: Isolate the plant and treat with horticultural oil or insecticidal soap applied to affected areas.
Vine weevil: Use nematode treatments in soil or apply systemic insecticides to control larvae and adults.
Mealybugs: Wipe off insects with a damp cloth dipped in methylated spirit or apply insecticidal spray.
Sunburn: Acclimatise plants gradually to full sun and provide shade during peak summer heat if grown in containers.