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Fertilizing Ligustrum, a popular evergreen shrub, is essential for healthy growth and vibrant foliage. However, knowing when to stop fertilizing in the fall is crucial to prepare the plant for winter dormancy and prevent potential damage. This guide provides practical tips to help gardeners and landscapers determine the right time to cease fertilization.
Understanding Ligustrum’s Growing Cycle
Ligustrum typically enters a period of slowed growth as temperatures drop and daylight hours decrease. Recognizing these natural changes can help you time your fertilization schedule appropriately. During active growing seasons—spring and early summer—regular fertilization supports lush foliage and dense growth. As fall approaches, growth slows, signaling the need to reduce or stop fertilizing.
Signs That Indicate It’s Time to Stop Fertilizing
- Reduced growth: New shoots and leaves slow down or stop appearing.
- Color changes: Foliage begins to dull or show signs of stress, such as yellowing.
- Temperature drops: Consistently below 50°F (10°C) at night.
- Daylight hours: Shorter days reduce the plant’s ability to photosynthesize effectively.
- Seasonal calendar: Approaching late fall or early winter, typically after September or October in temperate zones.
Best Practices for Ending Fertilization
To ensure your Ligustrum prepares well for winter, follow these best practices:
- Gradually reduce fertilization: Cut back on feeding in late summer, then stop altogether as signs of dormancy appear.
- Use slow-release fertilizers: If you fertilize in early fall, opt for slow-release formulas to minimize overstimulation.
- Avoid late-season fertilizing: Applying fertilizer too late can encourage tender new growth that is vulnerable to frost damage.
- Monitor weather patterns: Delay fertilizing if an early cold snap is forecasted.
Additional Tips for Healthy Ligustrum in Winter
Besides stopping fertilization at the right time, consider these tips:
- Water properly: Ensure the plant receives adequate moisture before dormancy, but avoid overwatering.
- Mulch around the base: Protect roots from extreme cold and conserve soil moisture.
- Prune lightly: Remove dead or damaged branches in late fall to promote healthy growth in spring.
- Monitor for pests and diseases: Address issues promptly to maintain overall plant health.
Conclusion
Determining when to stop fertilizing Ligustrum involves observing natural growth cues, seasonal changes, and environmental conditions. By gradually reducing fertilization as fall approaches and taking care to protect the plant during winter, you can ensure your Ligustrum remains healthy and vigorous year after year.