How are willowherb seeds dispersed?
Seeds have a plume of hairs and are wind dispersed. It has been estimated that 20 to 50% of seeds may be carried 100 m by the wind and some could potentially travel over 100 km. Rosebay willowherb also spreads by the horizontal roots on which adventitious buds develop.
How does rosebay willowherb spread?
What is rosebay willowherb? Chamaenerion angustifolium is a native perennial weed which spreads by seed and rhizomes (underground stems) and is unsuitable in a small garden. It is found growing on waste land, scrub, rocks, woodland and also gardens where it can become a serious weed.
Where does Willow-Herb come from?
Originally hailing from Eurasia and North Africa, the Hairy Willow-Herb now inhabits parts of Australia, Canada and the United States. The purple bloomer was largely planted as an ornamental flower in the early 1800s, but soon became a prolific garden weed.
Is Fireweed the same as willow-herb?
Chamaenerion angustifolium is a perennial herbaceous flowering plant in the willowherb family Onagraceae. It is known in North America as fireweed, in some parts of Canada as great willowherb, in Britain and Ireland as rosebay willowherb.
What does willowherb look like?
Rosebay willowherb is a tall plant with pink flowers rising up a flower spike. It has lance-like leaves that are arranged in spiral formation up its stem.
How do you control Willow Herb?
- Mechanical. Cultivation and hand hoeing are effective. Mowing can help control the spread but needs to be done when the plant is not seeding.
- Herbicides. Spot spray. Herbicides registered in Tasmania include dichlobenil (and glyphosate but the weed is resistant to glyphosate).
Is willowherb poisonous?
Rosebay Willowherb contains Grayanotoxin, which affects skeletal/ cardiac muscle & nerve function. All parts of this plant are toxic & can be fatal to equines.
Where can I find willowherb?
As a pioneer plant, rosebay willowherb thrives on waste ground. Keep an eye out for it when travelling by car or train. It likes to grow in dry, relatively open areas. It can typically be found in forest clearings, beside tracks and trails, on recently disturbed ground and on well-drained banks of rivers.
Is Willow Herb poisonous?
Can you eat willow herb?
The very young shoots can be treated like asparagus and served with butter and lemon, the older leaves get very bitter. Young leaves can be added to salads. The soft inner part of the stem can be easily removed and used as a thickener for soups or stews. The flowers can be used to brighten a salad.