Cleavers
Galium aparine · Rubiaceae
The gardener's calendar
Ideal time to plant cleavers: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Blooming
- April to September, small white or greenish flowers
- Adult size
- 30 to 90 cm in height
- Growth
- Fast
- Hardiness
- Very hardy, down to -15 °C
- Origin
- Europe, Western Asia and North Africa
- Plant type
- Annual or winter herbaceous plant
Care
Light Exposure
Cleavers thrive in partial shade or full light, particularly at forest edges or in hedgerows. They tolerate partially shaded conditions well and are not afraid of moderate sun exposure. However, avoid spots that are too hot and dry in summer.
Soil and Potting Mix
This plant appreciates rich, moist, and well-drained soils, with a slight preference for neutral to chalky terrain. It also adapts to less fertile soils, particularly in wastelands and semi-natural areas. Loose soil favors its development.
Watering
Keep the soil moist, especially during the active growing period (spring and summer). In case of prolonged drought, water regularly to avoid water stress. However, cleavers are tolerant and generally don't require intensive maintenance once established.
Fertilizer
A moderate application of balanced fertilizer in spring will suffice, or an organic amendment (compost). Cleavers don't require heavy fertilization; soil rich in organic matter is generally sufficient for beautiful growth.
Pruning and Trimming
No real pruning is necessary. You can cut back or clean up the plant at the end of winter or after flowering to limit self-seeding. Wear gloves when handling: the stems are covered in tiny hooks that catch on clothing and skin.
Diseases and Pests
Cleavers are generally very robust and rarely affected by diseases. Mealybugs or aphids may occasionally affect them, but rarely seriously. Good soil balance and appropriate light exposure prevent most problems.
Did you know?
Cleavers gets its common name from its stems and leaves covered in tiny sharp hooks that cling to fabrics and animal fur—a clever trick for dispersing its seeds! Long ago, farmers used it to card and prepare textile fibers, while its roots produced a precious red dye.
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.