Only to certain plants. Specifically, the tree exerts an allelopathic effect on surrounding vegetation. That effect actually is a germination inhibitor, which keeps plants from maturing into attractive, healthy plants. But they are not poisonous for humans.
23:41, 14 December 2011
A three-leaflet plant that is well known for causing sever ...
Haemanthus coccineus, the blood flower, blood lily or ...
Common sorrel or garden sorrel (Rumex acetosa), often ...
Euphorbia esula, commonly known as green spurge or leafy ...
Pygmaeocereus is a genus of diminutive cacti (family ...
The style in a flower is a pillar-like stalk through which ...
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