The most common species of weeping willow in North America is the native S. babylonica.
The willow’s reproduction is sexual. They produce male and female flowers on separate plants. The flowers, which are also sepalless, usually appear in clusters that are known as catkins. The catkins of willows produce scented nectar to attract insects looking for food. The insects then carry and distribute pollen to other willow flowers. After pollination occurs, the willow produces fruit. These fruits are small capsules that contain the seeds. The seeds each have silky threads that allow for wind dispersal. (Encarta, 1996)
If the seed is deposited in the appropriate environment, it can then germinate. The germination period of a willow is one to two days. Willows grow rapidly, and can reach flowering age within a few years. They have rather short life spans, some living for as little as 20 years. (Encarta, 1996)
They prefer to live in moist habitats, such as floodplains and riverbanks. Willows are found primarily in north temperate areas (Britannica, 1999). However, they can grow in environments as extremes as the Arctic tundra (Encarta, 1996). This could be due to a potential to withstand freezing (Sakai, 1970).
Because willows grow quickly, yield more harvest per acre than any other tree, and they are a renewable resource, willows are being looked at as a source of fuel. Also, they only release as much carbon dioxide as they received throughout their life cycle. This means that they don't add any carbon dioxide to the environment, unlike coal or oil. (Futurist, 1999)
Willows not only offer a probable source of a clean burning, renewable fuel, but may also be useful in purifying wastewater. Willows are good at absorbing waste such as nitrates and phosphates, removing the chemicals from water. The willows then use these chemicals in the growth process. Researchers believe that willows may be useful for water treatment in lightly populated areas. (Futurist, 1999) It is evident that these plants are a great resource in our environment. Whether being used for fuel, pain relief, or just a shady spot.
http://academics.smcvt.edu/dfacey/AquaticBiology/Freshwater%20Pages/Willows.html
Good Luck! Hope this is helpful.
2007-10-11 02:43:05
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answer #1
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answered by ANGEL 7
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Weeping Willows grow very fast. Just a guess would be 2 feet per year. I plantd one in 1997 and it is about 18 feet tall.
Also, did you know that they lose their leaves sometimes twice yearly? Also, you can break a limb off, plant it and start another tree. Old hill people believed that if you planted a weeping willow, when it was big enough to shade your grave you would die!!! Crazy, huh?
2007-10-10 13:53:27
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answer #2
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answered by skeeter 3
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