Narcissus (Daffodil): Basal rot Categories: Bulbs Narcissus (Daffodil) Narcissus (Daffodil) Diseases Ornamentals Last review date: 2024-07-07 01:55 Last edit date: Narcissus basal rot Photo by: R.S. Byther Biology Basal rot of narcissus is caused by a soilborne fungus. Bulbs usually develop the rot during storage. The infection begins at wound sites or at the base […]
Narcissus (Daffodil): Fire Categories: Bulbs Narcissus (Daffodil) Narcissus (Daffodil) Diseases Ornamentals Last review date: 2026-08-28 02:15 Last edit date: Narcissus fire Photo by: R.S. Byther Biology Narcissus fire is a fungal disease which affects the petals and leaves, but does not affect the bulb. It is favored by warm, humid weather and can spread very […]
Narcissus (Daffodil): Leaf scorch Categories: Bulbs Narcissus (Daffodil) Narcissus (Daffodil) Diseases Ornamentals Last review date: 2026-08-28 02:15 Last edit date: Narcissus leaf scorch Photo by: R.S. Byther Biology Leaf scorch is caused by a fungus that survives in the necks of the bulbs (thus infecting emerging leaves) and also in infected foliage. Leaf tips develop […]
Narcissus (Daffodil): Stem and bulb nematode Categories: Bulbs Narcissus (Daffodil) Narcissus (Daffodil) Diseases Ornamentals Last review date: 2024-07-07 02:00 Last edit date: Narcissus nematode damage Photo by: R.S. Byther Biology Nematodes are tiny (often microscopic), parasitic worms that live in the soil and in infected plant parts. The stem and bulb nematode of narcissus feeds […]
Narcissus (Daffodil): Virus diseases Categories: Bulbs Narcissus (Daffodil) Narcissus (Daffodil) Diseases Ornamentals Last review date: 2025-10-31 08:39 Last edit date: Narcissus yellow stripe virus Photo by: R.S. Byther Biology While many viruses infect narcissus, two virus diseases (Yellow Stripe and White Streak) are common in the Pacific Northwest. Yellow Stripe is characterized by the white […]
Narcissus (Daffodil): Narcissus bulb fly Categories: Bulbs Narcissus (Daffodil) Narcissus (Daffodil) Insects Ornamentals Last review date: 2025-10-30 03:40 Last edit date: Narcissus bulb fly Photo by: R.S. Byther Biology The adult narcissus bulb fly is about 1⁄2″ long and closely resembles a small bumblebee. The female lays eggs near the bulbs in early summer. The […]