Verbascum virgatum, commonly known as twiggy mullein, is a biennial plant in the family Scrophulariaceae. Native to Europe, it has naturalized in various parts of North America. It is known for its tall, slender spikes of yellow flowers and its ability to thrive in poor, dry soils. The plant typically enters a dormancy period during the winter months.
Verbascum virgatum is relatively easy to care for. It prefers full sun and can tolerate dry conditions. Moderate temperatures are ideal, and it does not require high humidity. Water the plant sparingly, allowing the soil to dry out almost completely between waterings.
土壌
This plant prefers well-draining loamy soil but can tolerate poor soils. Ensure the soil has good drainage to prevent waterlogging, which can lead to root rot.
肥料
Verbascum virgatum does not require frequent fertilization. If desired, a light application of a balanced fertilizer in the spring can support growth.
植え替え
Repotting is generally not necessary for Verbascum virgatum as it is typically grown outdoors. If grown in a container, repot in the spring when the plant outgrows its pot.
伝搬
Verbascum virgatum can be propagated by seeds. Sow seeds in the spring or early summer. The seeds require light to germinate, so do not cover them with soil.
剪定
Pruning is beneficial for Verbascum virgatum. Remove spent flower spikes to encourage new growth and prevent self-seeding. Prune in late summer or early fall.
毒性
Verbascum virgatum is not known to be toxic to pets or humans. However, it is always best to keep plants out of reach of pets and children.