What kind of tree is green and covered in sharp, pointy spikes? - Quora

What kind of tree is green and covered in sharp, pointy spikes? - Quora

Which tree releases round spiky balls that are brown in color and are very hard? - Quora

Is the tree affected by the presence of an orchid? - Quora

What kind of tree is green and covered in sharp, pointy spikes? - Quora

What kind of smaller evergreen tree should I plant to have three different colors? - Quora

Are there any cacti with no needles on it? - Quora

What tree has reddish wood inside it? - Quora

What steps do tree climbers take to climb safely? - Quora

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What is the name of a plant or tree that has sharp thorns and grows in the desert? - Quora

Which cactus has the most lethally sharp spikes? - Quora

What is the most common type of tree in Asia? - Quora