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Tall oat-grass

Arrhenatherum elatius · Poaceae

The gardener's calendar

The right move for September

Ideal time to plant tall oat-grass: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Foliage
Deciduous, semi-evergreen depending on climate
Blooming
June to July
Adult size
60 to 100 cm tall
Growth
Fast
Hardiness
Very hardy, down to -15°C
Origin
Western and central Europe
Soil type
Indifferent, tolerates dry to moist soils

Care

Exposure

Tall oatgrass appreciates a location in full sun or partial shade for optimal growth. In warm climates, light afternoon shade can be beneficial. It tolerates open, well-ventilated areas well.

Watering

Once established, tall oatgrass is undemanding and drought-resistant. Water regularly during the first year to encourage rooting. In very dry conditions, occasional watering improves vigor.

Soil and preparation

This grass adapts to almost all soil types, from the poorest to the richest. It prefers well-drained soil but tolerates moderate moisture. No special preparation is needed.

Pruning and maintenance

Clean up dry stems in late winter or early spring before growth resumes. Cutting back to 10-15 cm tall rejuvenates the clump. Avoid heavy pruning in summer to avoid weakening the plant.

Fertilization

Tall oatgrass is undemanding and generally requires no fertilizer. A compost application in early spring can support growth on very poor soils. Avoid excess nitrogen, which weakens structure.

Diseases and pests

Very hardy, tall oatgrass is rarely affected by diseases or pests. Good drainage prevents any risk of root rot. No specific treatment is generally necessary.

Did you know?

Tall oatgrass, also called elevated oats, is a forage grass historically cultivated to feed livestock in Europe. Its name evokes its nutritional qualities prized by livestock farmers. Today, this undemanding plant remains popular for creating wildflower meadows or natural ornamental grass gardens.

Where to buy it

Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.

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Tips generated and checked by Viridia — adapt them to your local climate.