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Fountain Grass

Pennisetum alopecuroides

outdoor

A graceful ornamental grass prized for its arching foliage and feathery bottlebrush flower spikes that emerge in late summer to fall. It grows 3–4 feet tall and wide, creating a fountain-like mound of fine-textured leaves that turn bronze or burgundy in cooler months. Extremely hardy and low-maintenance once established, making it ideal for borders, mass plantings, and wildlife gardens.

Common Problems

Select the problem your Fountain Grass is experiencing to get a treatment guide.

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Underwateringchevron_right

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Slow Growthchevron_right

Care Guide

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Light

Full sun (6+ hours daily); tolerates partial shade but flowers best in full sun

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Water

Moderate; water regularly during establishment and drought stress; established plants are drought-tolerant and require minimal supplemental watering

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Soil

Well-draining soil; tolerates poor, sandy, or clay soils; pH adaptable (5.5–8.0)

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Fertiliser

Minimal fertilizer needed; apply balanced slow-release fertilizer in spring if soil is very poor

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Temperature

Hardy and adaptable; prefers 50–85°F during growing season

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Humidity

Low to moderate humidity; drought-tolerant once established

Toxicity

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Non-toxic to humans and pets; foliage may be sharp-edged

Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.