Species Woolly Burdock
pink-green flowers with black-pink stamens, green leaves and green-brown stems

Woolly Burdock

Arctium tomentosum

Woolly Burdock (Arctium tomentosum) is an herbal plant species native to Europe, Asia, and North America. It is a wild, biennial herb with a thick stalk and a sprawling rosette of large, deeply-toothed leaves. Its pale purple flowers are clustered at the end of branching stems and heads of hooked burrs on the plant. When mature, these burrs adhere to clothing and animals, facilitating Woolly Burdock’s dispersion across the landscape. With a wide range of medicinal benefits, Woolly Burdock has been used for centuries to treat a variety of ailments including skin conditions, digestive issues, and respiratory illnesses.

Watering:

Minimal

Propagation:

Division,Root Cutting,Seed Propagation,Layering Propagation

Hardiness Zone:

Sun:

full sun,part shade

Leaf:

Yes

Growth Rate:

Low

Invasive:

Yes

Care Level:

Medium

watering

Woolly Burdock should be watered regularly throughout its growing season. In regions with mild winters, this may be year-round. In cooler climates, wait until the temperature has risen above 65°F (18°C) to begin watering. The soil should be kept slightly moist, but not soggy. Water thoroughly, allowing the water to penetrate to the roots, and not just wet the surface of the soil. Water every 4-7 days, or when the surface of the soil is dry. Avoid overwatering this species. Do not water during a cold spell or if temperatures drop below 40°F (4°C).

sunlight

Woolly Burdock requires full sun to partial shade. It thrives best when it receives at least 6 hours of direct sunlight each day. During periods of peak sunlight, Woolly Burdock should be sheltered from the sun for part of the day, as the intense heat can be damaging to the leaves and flowers. Ideally, the plant should receive filtered sunlight or be provided with some shade during the hottest part of the day.

pruning

Woolly Burdock should be pruned annually in late winter or early spring. This should be done before the plant begins to regrow, as this will help to ensure optimal flowering and the plant's overall health. The best time to prune is when the dormant foliage is beginning to break out of its protective case, now revealed as the tender, fuzzy winter growth. Prune Woolly Burdock down to about 6- to 10-inches tall, leaving about 3-to-4inches of the main stem and buds exposed. This will help to stimulate new growth from dormant buds and promote fuller growth in the upcoming season. Make sure to remove any old or damaged growth as well, as this will help to ensure the plant is at optimal health.