《The Lorax 讓它成長》的歌詞如下：
Thneedville's full of lies
Thneeds have been overused
And the world is full of Thneedville's trash
And I'm the Lorax
我會讓它成長
我會讓它繁茂
我會讓它生根
我會讓它茁壯
我會讓它成長
我會讓它繁茂
我會讓它生根
我會讓它茁壯繁茂
Let it grow, let it grow, let it grow, grow
讓它成長，讓它成長，讓它繁茂，繁茂
I'm a tree-hugging puppet
With a mission to save the day
And I'm the Lorax, I'm the one and only Dr. Seuss character who speaks for the trees
我是個愛護樹木的木偶
為了拯救世界而來
我就是那個唯一為樹木代言的《愛因斯坦》角色——洛雷塔
Let it grow, let it grow, let it grow, grow
讓它成長，讓它成長，讓它繁茂，繁茂
It's not my fault if you don't like green things around you
如果你不喜歡四周的綠色植物，那也沒關係，這不是我的錯
I'm here to tell you that we need to make a change for the better of our world, and we need to start with me, with you and with every little seed inside of you and every single seed in our environment
我是來告訴你們我們需要為了改善我們的世界而做出改變，我們需要從我自己、你和你周遭每個小小的種子開始。我們生活的大環境中的每一個種子都是生命的希望。如果你還喜歡綠色的環境就支持我們吧！如果不喜歡的話那就種一棵屬於你自己的小樹吧！我們一起保護地球！一起努力！
Let it grow, let it grow, let it grow, grow (grow) 讓它生長，讓它生長，讓它繁茂，繁茂（生長）