Does it need a lot of water?

No, it prefers well drained, dry soil and dislikes being kept wet.

Can I grow it in a pot?

Yes, it works well in small containers as long as the drainage is excellent.

Plant guide

Early hair-grass.

Aira praecox

Pronounced EYE-ruh PREE-koks

Also known as Early Hair Grass, Early Hair-Grass, Small Hair-Grass, Yellow Hairgrass, early hairgrass, early silver hairgrass, little hairgrass, small hairgrass

early hair grass — Photo by zebedeugalinha (CC BY) via iNaturalist

This charming little grass is a fleeting annual that pops up in sandy soils during the spring. It is a lovely addition to naturalistic gardens or rockeries where it can complete its life cycle quickly. You will find it thrives in open, sunny spots where other plants might struggle.

At a glance

Care level: Easy
Plant type: Annual grass
Light: Full sun
Indoor light: Direct sun
Water: Every 3 to 7 days
Mature size: 15 to 20 cm
Growth rate: Fast
Hardiness: USDA 5 to 9
Bloom time: Late spring to early summer

Care

Keep the soil well-drained and avoid letting it sit in soggy conditions. Watch for the foliage to fade as the plant naturally dies back after setting seed. It is quite self-sufficient and rarely needs much intervention.

Watering: Water when the top inch of soil feels dry to the touch.
Feeding: This plant generally does not require supplemental feeding.
Pruning: Simply clear away the dead foliage once the plant has finished its life cycle.
Repotting: As an annual, this plant is not typically repotted.
Soil: Sandy or gritty
Soil pH: Acidic to neutral
Temperature: -29 to 30°C
Humidity: 40 to 70%
Drought tolerance: High
Lifespan: Annual, typically 1 year
Deer and rabbits: Moderate

Signs it needs repotting

Roots circling the bottom of the pot
Water draining through too quickly

Safety

People: There are no known toxic properties associated with this plant.
Children: The plant is not dangerous, but its small size and dry texture make it unappealing for children to handle.
Contact allergens: The fine, dry foliage can occasionally cause mild skin irritation in sensitive individuals.
Airborne allergens: The pollen may cause mild seasonal allergies in some people.
Edibility: This grass is not intended for human consumption.

How to identify it

Fine, hair-like green foliage
Small, dense panicles of flowers
Silvery or purplish spikelets
Tufted, compact growth habit

Height: 0.05 to 0.2m
Spread: 0.05 to 0.15m
Leaves: green, deciduous
Flowers: green, silver, 0.1 to 0.3cm

Problems to watch for

Root rot · Occurs when the soil stays consistently waterlogged for too long.

By symptom

Plant problems by symptom

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Growing it

Propagation: seed
When to plant: spring, autumn
Overwintering: As an annual, it often germinates in autumn and survives the winter as a small tuft of green foliage before flowering in spring.
In containers: It grows well in small pots, provided they have excellent drainage and are not kept too moist.

Seed

Collect seeds in early summer once the flower heads turn brown.
Sow seeds directly into a well drained, sunny spot in autumn.
Keep the soil lightly moist until germination occurs.

Pair this grass with other low growing, drought tolerant plants to create a naturalistic, low maintenance display.

Grows well with

Wild Thyme · They share similar requirements for dry, sunny, and nutrient poor soil.
Common Thrift · This perennial provides a nice textural contrast to the delicate grass.

Similar species

Silver Hair Grass · It is a close relative with a similar appearance but slightly different flowering timing.

Science

Family: Poaceae
Genus: Aira
Order: Poales
Class: Liliopsida
Native range: Western and Southern Europe, North Africa.
Conservation: It is common in its native range and not considered a conservation concern.

It survives by germinating in autumn or winter and flowering quickly in spring to avoid summer drought.

Value to wildlife: provides cover for small insects
Pollinators: bees
Uses: rock gardens, naturalistic meadows, container fillers

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 5/9
Light: 8/9
Temperature: 5/9
Moisture: 3/9
Nutrients: 2/9

Taxonomy resolved against GBIF.

Questions people ask

Does it need a lot of water?: No, it prefers well drained, dry soil and dislikes being kept wet.
Can I grow it in a pot?: Yes, it works well in small containers as long as the drainage is excellent.

Where the name comes from

The genus name Aira comes from the Greek word for a type of grass, while the species name praecox means early, referring to its rapid spring growth cycle.

Good to know

It is often called early hair grass because of its delicate, threadlike stems.
It thrives in poor, sandy soils where other plants struggle to grow.
The plant is an annual, meaning it grows from seed and dies within a single year.

Also in

Drought-tolerant plants

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This guide was generated with AI on October 19, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.