植树节的由来
世界上有植树节，首始美国。起初只是在内布拉斯加州，后很快风行全美，其他许多国家纷纷仿效。我国植树节，始于民国四年(1915年)，当时农商部规定在清明日。
由于各地气温殊异，四月五日左右的清明节，北方较寒，尚可植树;而南方已草木萌动，树木一经移栽，有碍生长，故须另择日期。民国十七年(1928年)，当时的国民政府中有人提议，孙中山先生是领导推翻几千年封建王朝，创立民国的伟大元勋，功悬日月，名垂千古，以他的逝世纪念日三月十二日为植树节，无论意义与时令均甚合宜。这一提议遂获得通过。并确定兰花为首都市花。
1930年3月12日，这一天在南京的国民政府要员齐集南京东郊中山陵，参加第一次“国父逝世纪念植树仪式”，以后亦每年举行。但由于当时政府倡而不力，始终未能推广开来。
解放后，由于人民政府大力提倡，绿化造林取得了很大成绩。1979年，中华人民共和国全国人民代表大会常务委员会更进一步确定，将3月12日定为全民植树节。现在每到这一天，上至中央，下至地方，党政军民，工农商学，纷纷出动植树造林，绿化祖国，形成了既轰轰烈烈，又扎扎实实的群众自觉活动。全国许多城市还选了市树、市花。南京选雪松为市树、梅花为市花。3月12日植树节，已深入人心。
植树节的由来英文版，植树节的由来英语文章：
Planting Trees Day comes on March 12 every year. Do you know what can we do to help on the day?
In China, Planting Trees Day is on March 12. This special day began in 1979. On that day, people can plant many trees. And if we plant trees more, we must also take care of the trees by watering them until they grow up to be strong. In different countries, Planting Trees Days are on different days. Like in India, Planting Trees Day is on July 1.
Why do the people plant trees? It is very easy. Because they want to protect the environment. There are many people who want to earn the money form only cutting down trees. So more and more trees are cut by them. But kind people want to protect the environment and make the air clean. So they plant trees as many as they can.
All these actions show that people should pay more attention to the environment. We want to make it better, don’t we? So we must plant more trees to protect the environment.
So, everyone, if you want to make the air clean, please try your best to protect the environment and plant more trees.