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Yews are popular evergreen shrubs that add structure and greenery to gardens. To keep yews healthy and vibrant, proper fertilization is essential. One eco-friendly and effective method is using worm castings, a natural fertilizer rich in nutrients.
Why Use Worm Castings for Yews?
Worm castings, also known as vermicompost, are the nutrient-rich excrement of earthworms. They contain essential nutrients like nitrogen, phosphorus, and potassium, along with beneficial microorganisms that improve soil health. Using worm castings promotes healthy root development, enhances growth, and increases the yew’s resistance to pests and diseases.
When to Fertilize Yews with Worm Castings
The best time to fertilize yews with worm castings is during their active growing seasons: early spring and late summer. Avoid fertilizing during extreme heat or cold, as the plant’s uptake of nutrients may be less efficient.
How to Apply Worm Castings to Yews
Follow these simple steps to fertilize yews effectively:
- Prepare the area around the yew by removing any weeds or debris.
- Apply a 1-2 inch layer of worm castings evenly around the base of the shrub, extending to the drip line.
- Gently work the castings into the topsoil with a garden fork or rake to improve absorption.
- Water thoroughly to help the nutrients penetrate the soil and reach the roots.
Frequency of Application
Apply worm castings once in early spring and once in late summer. For mature yews, a light top dressing every 4-6 months can support ongoing health. Avoid over-fertilizing, as this can lead to excessive growth and weaken the plant.
Additional Tips for Healthy Yews
Besides fertilizing with worm castings, ensure your yew receives proper watering, adequate sunlight, and good drainage. Prune dead or overgrown branches to maintain shape and health. Regular inspection for pests and diseases will also help keep your yew thriving.