Weeds - Grass Weeds Information and Photo Gallery

Loose silky-bent


Loose silky-bent (Apera spica-venti L.) is a hardy annual panicle grass. The foliage is greenish purple, flat, rough with no hairs. Sheath is smooth but is rougher near the apex. Individual blades are pointed and flat, 7 to 25 cm long and 3 to 10 mm wide. It can grow to around 30-120 cm high. It produces single, large flowers during the summer.

Occurrence and spread

Loose silky bent is widely distributed in England and prefers light, fresh soils such as sands or light loams. It is often an indicator of lime deficiency. It can be a troublesome weed on arable land.

Each plant can produce between 1000 to 12000 seeds per plant. These are very small and light and can travel long distances. These can shed and germinate before a crop matures making control difficult.

Control and management

Control can be achieved by a variety of herbicides. For example propoxycarbazone-sodium (e.g. Attribute) , an ALS-inhibiting herbicide, is useful for the control of bromes and couch in winter wheat. In addition, it shows good activity against loose silky bent, black-grass, wild-oats and onion couch. Seek advice from your BASIS qualified adviser.


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