This is the 10916th most frequent Russian word.
вырасти
To grow or to mature.
Here, 'выросло' is the past tense (perfective aspect) of 'вырасти', used to indicate that the tree has completed growing over a period of five years.
Дерево выросло за пять лет.
The tree grew in five years.
'вырасти' in this sentence is used in its infinitive form to express the speaker's desire to mature and develop personally.
Мне хочется вырасти и стать сильным.
I want to grow up and become strong.
'вырастет' here is in the future tense (perfective aspect), indicating that the action of growing beautifully will happen upon continuation of care.