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Hairy beggar-ticks

Bidens pilosa · Asteraceae

The gardener's calendar

The right move for September

Ideal time to plant hairy beggar-ticks: 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, medium green
Flowering
July to October
Adult size
60 to 100 cm in height
Growth
Fast
Hardiness
Low hardiness, freezes below 0 °C
Origin
Tropical and subtropical regions
Soil type
Tolerant, well-drained
Light
Full sun preferably

Care

Light Exposure

Place your hairy beggar-ticks in full sun or partial shade for optimal flowering. The more light exposure you provide, the more vigorous the growth and abundant the flowers. Avoid overly shaded areas that would slow down growth.

Watering

Water regularly during growth and flowering, keeping the soil moist but without waterlogging. During dry periods, watering every 2 to 3 days may be necessary. Gradually reduce watering at the end of the season if you're growing the plant in a pot.

Soil and Potting Mix

Light, well-drained soil rich in organic matter works perfectly for hairy beggar-ticks. You can use a mix of universal potting soil and compost. Soil that is too compact or clayey can promote root problems: improve it with sand or perlite if needed.

Fertilizing

Apply balanced or slightly nitrogen-rich fertilizer every 2 to 3 weeks during the active growing period (spring-summer). Excess nitrogen can promote foliage at the expense of flowers. Stop fertilizing in autumn-winter.

Pruning and Maintenance

Pinch back young shoots regularly to encourage bushy and denser growth. Remove spent flowers to extend flowering. Light pruning in late winter helps maintain a compact shape before the new growth begins.

Diseases and Pests

Hairy beggar-ticks is generally robust, but excess moisture can promote powdery mildew or root rot. Ensure good air circulation and avoid watering over the foliage. In indoor cultivation, watch for spider mites and whiteflies, especially in dry air conditions.

Did you know?

The hairy beggar-ticks is famous for its seeds equipped with small hooked barbs (the "samara") that cling to clothing and animal fur: it's a remarkable natural dispersal mechanism. Originally from the tropics, this opportunistic weed has become widely naturalized on all continents and is used in traditional medicine in several cultures.

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.