Plant Profile: Youngia japonica

Hawksbeard, belonging to the Asteraceae family, is a summer annual herb that often grows as a weed in agricultural and environmental settings, frequently persisting throughout the year. The seedlings develop a rosette that resembles a small sowthistle (Sonchus spp.), but their leaves are hairy. The upper leaves are more linear, lack a stalk, and release a milky sap when torn. Unlike dandelions, narrowleaf hawksbeard features leaves along the flowering stem and can become quite branched. During the rosette stage, distinguishing between narrowleaf hawksbeard and dandelion can be quite challenging.

The inflorescence stalk is typically devoid of leaves, though it may occasionally have up to three. It branches at the top and can reach heights of 6 to 15 inches, occasionally extending to 3 feet. The flowers are yellow and resemble dandelions, measuring about 1/2 inch in diameter. The seed heads, also similar to dandelions, range from 1/4 to 1/2 inches in diameter and are dispersed by the wind. It is advisable to prevent the plants from seeding. Hawksbeard appears to be effectively managed by available pre-emergence herbicides, although the efficacy rankings for this species are derived from limited experimental data.

The young leaves and plants can be consumed either cooked or raw. Additionally, hawksbeard attracts the Burnsius butterfly, a newly identified genus within the checkered skipper family.

In terms of pests and diseases, it is important to note that this plant is considered invasive.