Gardening Tips & Flowers : How to Grow Aster
When growing aster, make sure that the plants get plenty of full, hot sun and good drainage. Cut half of an aster plant down when the blooms are ...
KivuWatt: Powering Rwanda and Averting Disaster
One of the more vivid memories of my childhood was hearing about the 1985 disaster at Lake Nyos in Cameroon. In case you forgot, Lake Nyos was naturally super-saturated with dissolved carbon dioxide and other gasses. When disturbed by an earthquake, the lake literally “fizzed” out millions of tons of CO2 like the opening of a soda can. Being heavier than air, the CO2 spilled over the lake’s banks and down a valley suffocating over 1700 people and countless animals over the course of an hour or two. Anything that wasn’t a plant died.
It turns out there are two other lakes in the world which have smiler saturations of gas and therefore share the potential for this kind of disaster. One is another minor lake in Cameroon and the other is the vastly larger and more significant Lake Kivu between Rwanda and the Democratic Republic of the Congo. Lake Kivu (upon whose shore I sat researching this post) is 2000 times larger than lake Nyos and has more than two million people in its immediate vicinity. It is not only saturated CO2 but, it turns out, is also saturated with methane. It remains stable, but being in an area of seismic activity, it’s only a matter of time before a volcanic event or earthquake could disturb the lake enough to release these gases. In fact, scientists say that the phenomenon, known as a limnic eruption , is expected to occur at some point in the next 100 or so years.
aster plant - News
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Don't let alien invaders take over Bay's landscape Don't let alien invaders take over Bay's landscapeInstead, plant alum root (Heuchera americana), white wood aster (Eurybia divaricata), foam flower (Tiarella cordifolia) and partridgeberry (Mitchella and more » |
Top Story 4/13/2010 Spring Trials: Plants on parade
Horizons program, includes Buzz buddleja, Kickin aster and several erysimum series. The Tropical Surge program includes a variety of plants that can be used
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Most plant ailments can be treated successfully and I will try to outline certain types of pests and diseases and what remedy you should
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This is also the best time to plant a clematis, try Thorncroft Clematis (01953 850407; thorncroft.co.uk). 7 Autumn-flowering perennials such as aster,
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Let perennials tell when it's time to divide Let perennials tell when it's time to dividePerennials that should be divided every two to three years: aster, coreopsis, sedum “Autumn Joy,” garden mums (Dendranthema), helenium, heuchera, |
