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Hello, fellow gardening enthusiasts! We're the Hedge Cutting Staffordshire team, and today we're diving into a common lawn issue many of us face here in the Midlands—dollar spot disease. This pesky problem can be a real eyesore, but with the right knowledge and techniques, you can tackle it effectively.
Quick Answer
Dollar spot is a fungal disease caused by Sclerotinia homoeocarpa, often due to a combination of moisture, cool nights, and nutrient deficiency. Regular mowing, proper fertilisation, and watering are key to preventing it.
What Is Dollar Spot?
Dollar spot is a lawn disease caused by the fungus Sclerotinia homoeocarpa. It typically appears as small, round patches on your grass, which turn straw-coloured as the disease progresses. This can be particularly noticeable in the mornings when dew is present.
Causes of Dollar Spot
Moisture and Temperature
In Staffordshire, the climate can be quite favourable for dollar spot, especially during cool nights and warm days. This creates the perfect environment for the fungus to thrive, particularly in lawns that retain moisture overnight.
Nutrient Deficiency
Poor nutrient levels, especially nitrogen, can weaken grass, making it more susceptible to dollar spot. Ensure your lawn is receiving balanced fertilisation throughout the growing season.
Poor Air Circulation
Lawns that are shaded or have poor air circulation are more prone to dollar spot. Trees and shrubs can block sunlight and airflow, providing a perfect environment for the fungus.
How to Fix and Prevent Dollar Spot
Regular Mowing
Keep your grass at the recommended height for its type. Regular mowing improves air circulation and reduces the amount of leaf moisture, hindering the fungus's ability to spread.
Proper Fertilisation
Apply a nitrogen-rich fertiliser in early spring and again in late summer to strengthen your grass. This helps it outcompete the fungus.
- Use a balanced fertiliser in the spring and autumn
- Adjust nitrogen levels during the growing season
- Test your soil every 2-3 years
Watering Techniques
Water your lawn deeply but infrequently, ideally early in the morning. This allows grass blades to dry during the day, reducing the humidity that the fungus craves. Avoid watering in the evening.
| Month | Watering Frequency | Fertilisation |
|---|---|---|
| April | Once a week | Apply nitrogen-rich fertiliser |
| July | Twice a week | Monitor and adjust as needed |
| September | Once or twice a week | Final fertilisation before autumn |
Improve Air Circulation
Prune trees and shrubs to enhance sunlight and airflow to your lawn. This minor landscaping effort can significantly deter fungal growth.
Frequently Asked Questions
How can I recognise dollar spot early?
Look for small, round patches of discoloured grass, particularly after humid nights. The grass may appear bleached with a reddish-brown border.
Can dollar spot kill my grass?
While dollar spot can weaken your lawn, it usually doesn't kill the grass entirely. Prompt treatment and care can restore affected areas.
Is dollar spot contagious to other plants?
No, dollar spot specifically targets grass. However, maintaining overall garden health can prevent similar issues.