Purple Fountain Grass (Pennisetum setaceum ‘Rubrum’)

Purple Fountain Grass (Pennisetum setaceum ‘Rubrum’) is a beautiful ornamental grass known for its purple-tinged foliage and feathery flower plumes. Here’s a care guide to keep your Purple Fountain Grass healthy and thriving:

1. Light Requirements:

  • Full Sun: Purple Fountain Grass thrives in full sun, meaning it should receive at least 6 hours of direct sunlight each day. The more sunlight, the better the foliage color.

2. Watering:

  • Moderate Watering: While this grass is relatively drought-tolerant, it needs regular watering to establish its roots during the first few weeks of planting.
  • Once Established: Water it thoroughly but allow the soil to dry out between watering. Overwatering can lead to root rot.

3. Soil:

  • Well-Draining Soil: Purple Fountain Grass prefers well-draining soil with good aeration. It does well in sandy or loamy soil.
  • pH: A slightly acidic to neutral pH (6.0-7.0) is ideal.

4. Fertilizing:

  • Light Fertilization: Fertilize in the spring with a balanced, slow-release fertilizer. Avoid over-fertilizing, as this can lead to excessive growth at the expense of the flowers.
  • Annual Feeding: You can feed it once a year during the growing season.

5. Pruning:

  • Cutting Back: In late winter or early spring, cut the grass back to the ground. It’s best done before new growth begins, so you can avoid cutting back any new shoots.
  • Deadheading: Remove any spent flower plumes throughout the growing season to maintain a neat appearance, though they can be left to add texture and movement.

6. Temperature and Hardiness:

  • USDA Zones 9-11: Purple Fountain Grass is best suited for warm climates. It can handle light frost but should be protected or brought indoors in colder climates.
  • Winter Care: In cold climates, consider treating it as an annual or bringing it indoors during winter.

7. Container Growing:

  • If you’re growing it in a container, make sure the pot has drainage holes and use a well-draining potting mix. Containers allow for easier overwintering by bringing the plant indoors.

8. Pests and Problems:

  • Pests: Purple Fountain Grass can occasionally attract aphids, spider mites, and grasshoppers. Regularly inspect for pests and treat with insecticidal soap if needed.
  • Diseases: It’s generally resistant to disease but can suffer from fungal infections if overwatered. Avoid watering the foliage to reduce fungal risk.

9. Propagation:

  • Division: The easiest way to propagate Purple Fountain Grass is through division. Divide the clumps in the spring every 2-3 years to keep the plant healthy and prevent overcrowding.

By following these care steps, you’ll have a stunning addition to your garden with the unique beauty of Purple Fountain Grass!

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