Timing and TechniqueEssential tips for keeping your ornamental grass healthy and beautiful
Fountain grass (Pennisetum sp.), also known as foxtail grass, is a summer-green ornamental plant that retains its decorative appeal even during winter with its sturdy leaves and seed heads. However, for it to flourish again in spring, a proper annual pruning is necessary. Here’s everything you need to know about when and how to prune fountain grass effectively.
Why Should You Prune Fountain Grass?
Pruning fountain grass is crucial for its healthy growth. The old, dried foliage doesn’t decompose quickly on its own and can hinder new shoots from emerging. Additionally, pruning enhances the plant’s aesthetic by allowing the fresh, green growth to take center stage.
When Is the Best Time to Prune?
The best time to prune fountain grass is in late spring, just before the new growth begins. Depending on the variety and climate, new shoots may appear as early as April or as late as May.
Why Not Prune in Fall?
Pruning in the fall is not recommended. The dried foliage and seed heads act as natural winter protection, shielding the root ball from cold and excess moisture. Removing this protective layer can expose the plant to frost damage and rot caused by winter wetness. Furthermore, the dried grass also serves as a winter shelter for small wildlife.
How to Prune Fountain Grass Correctly
Pruning fountain grass is straightforward but requires a few key steps:
- Wear Gloves: The leaves of fountain grass can be sharp and irritate the skin.
- Use Proper Tools: A sharp pair of pruning shears works best for this task.
- Bundle the Grass: Use string to tie the grass into a bundle for easier cleanup after pruning.
- Determine Cutting Height:
- If no new shoots are visible, cut the grass about a hand’s width above the ground.
- If new green growth is already emerging, trim the dead foliage just above the new shoots to avoid damage.
- Prune in Sections: Take a handful of grass at a time and cut through the bundle, repeating until all the dried foliage is removed.
Do Different Fountain Grass Varieties Require Special Pruning?
No matter the variety, the general pruning method remains the same for all types of fountain grass. As long as you follow these guidelines, your plant will thrive.
Additional Care Tips for Fountain Grass
- Choose a sunny location with well-drained soil for optimal growth.
- Avoid waterlogging, as fountain grass is sensitive to excessive moisture.
- Consider using organic fertilizer to encourage robust growth during the growing season.
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