What to Look Out For
At Harts Nursery, we’re passionate about growing the healthiest, most beautiful lilies. But even the most well-cared-for plants can sometimes run into problems. Understanding common issues—including viruses—is key to keeping your lilies thriving year after year.
General Lily Problems
1. Yellowing Leaves
This can be caused by:
- Overwatering or poor drainage, leading to root rot.
- Nutrient deficiency, especially nitrogen or iron.
- Old foliage dying back naturally, especially after blooming.
Tip: Make sure your soil drains well and feed your lilies with a balanced fertiliser during the growing season.
2. Poor Flowering
- This might be due to insufficient sunlight, overcrowding, or using old bulbs.
- Lilies need a period of cold dormancy—storing them properly after flowering is essential.
3. Botrytis (Grey Mould)
- A fungal disease that causes brown spots on leaves and flowers, often in damp conditions.
- Ensure good air circulation and avoid wetting the foliage when watering.
Lily Viruses: What You Need to Know
While not extremely common, viral infections in lilies can be serious and are not curable. They are typically spread by pests such as aphids or through contaminated tools.
Lily Virus Symptoms
This composite image showcases various viral infections in lily leaves:
- A: Cucumber Mosaic Virus (CMV)
- B: Lily Mottle Virus (LMoV)
- C: Lily Symptomless Virus (LSV)
- D: Co-infection of LMoV and LSV
- E: Triple infection of CMV, LMoV, and LSV
Common Lily Viruses
1. Lily Symptomless Virus (LSV)
- As the name suggests, this virus often shows no visible symptoms.
- Over time, it can weaken the plant and reduce flowering.
2. Tulip Breaking Virus (TBV)
- Causes streaking or “breaking” in the colour of petals. While this can look pretty, it’s a sign of infection.
- Can spread quickly to other plants.
3. Lily Mosaic Virus
- Leaves may show yellow mottling or streaks.
- Flowers can appear smaller or distorted.
Nutrient Deficiencies
- Nitrogen Deficiency: Leads to yellowing of older leaves and poor growth.
- Phosphorus Deficiency: Causes dark green or purplish older leaves and poor flowering.
- Potassium Deficiency: Results in yellow or brown leaf margins and reduced flowering.
Prevention & Management
- Inspect plants regularly for unusual markings or growth issues.
- Remove and destroy infected plants—do not compost them.
- Control aphids and other sap-sucking insects with insecticidal soap or organic treatments.
- Use clean tools when dividing or cutting back plants.
- Buy certified virus-free bulbs from trusted suppliers—like us at Harts Nursery!
Final Thoughts
Lily viruses can be frustrating, but with careful monitoring and good garden hygiene, you can reduce the risk significantly. At Harts Nursery, we take every step to ensure our bulbs are healthy and virus-free before they reach you.
If you ever suspect a problem or need advice, don’t hesitate to reach out—we’re always happy to help keep your lilies in perfect health.
