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Aira praecox

Aira praecox · Poaceae

The gardener's calendar

The right move for September

Ideal time to plant aira praecox: 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, fine and delicate
Flowering
Spring (March to May)
Adult size
15 to 30 cm tall
Growth
Fast
Hardiness
Very hardy, down to -15 °C
Origin
Western and central Europe
Soil type
Well-drained, poor to moderately fertile

Care

Exposure

Early hairgrass prefers a sunny or partially shaded location. In full sun, it develops more vigorously and flowers more abundantly. It tolerates lightly shaded situations well but dislikes prolonged deep shade.

Soil and planting

This grass appreciates well-drained, light soils that are rather poor. It adapts well to sandy, gravelly or rocky terrain. Avoid heavy soils and waterlogged conditions that promote root rot.

Watering

During the spring growing period, keep the soil moderately moist. Once established, early hairgrass tolerates drought well and requires only occasional watering. Drastically reduce watering in summer and autumn.

Pruning and maintenance

Comb out the clumps with a fine-toothed comb or cut back to 5-10 cm tall in early spring to remove dead material and encourage new growth. Remove faded flower heads to prevent excessive self-seeding if desired.

Fertilizing

No fertilizer is necessary. This grass prefers poor soils and excessive fertilizer could weaken it or promote excessive foliage development at the expense of structure.

Pests and diseases

Early hairgrass is naturally very resistant to pests and diseases. Excess moisture is its main enemy and can cause root rot. Ensure optimal drainage.

Did you know?

Aira praecox owes its specific name 'praecox' (precocious) to its very early spring flowering, well before most grasses. Once very common in lean grasslands and European heathlands, it has practically disappeared from many natural habitats due to agricultural intensification, making it now a species of growing ecological interest for the restoration of semi-natural habitats.

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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