WP:COPYARTICLE, old revision of Three Friends of Winter with the following additional section (not merged as WP:OR)

Introduction of ”three friends“

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Pines are one of a kind conifer trees which could tolerate extremely cold or extremely hot condition (from -60℃ to 50℃). They are also filled with vital force. They could live in different condition such as mineral soil, sand, volcanic ash, calcareous soil and limestone soil. Hostile environment could not strike them down. This are the main reasons why pines are chosen to three friends of winter.

Bamboos,are some of the fastest-growing plants in the world, with reported growth rates of 250 cm (98 in) in 24 hours[1] Their lifetime are long as well,usually up to 15 years. Just like pines, bamboos can survive temperatures as low as −29 °C (−20 °F)[2]

Prunus mume also known as Japanese apricot, Korean plum, Chinese Plum and Mei.[3] One of the common features of "three friends" is that they could survive in cold weather,especially prunus mume which starts to flower in mid-winter (around January). [4] Winter is prunus mume's favorite season so that it show its prettiest part--flowers to us. As the simple summary of "three friend", all of them could survive in the extremely cold situation while other plants withered in the early fall. They are the typical cases so that we gather them together as a group.

References

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  1. ^ Farrelly, David (1984). The Book of Bamboo. ISBN 0-87156-825-X.
  2. ^ "Bamboo".
  3. ^ "Prunus mume:Chinese Plums and Japanese Apricots".
  4. ^ "Prunus mume".