This is the 10550th most frequent Spanish word.
crecen
"Crecen" means "they grow" or "they increase."
In this sentence, 'crecen' is used to describe the natural process of growth or increase in size, maturity, or age.
Los niños crecen rápidamente.
The children grow quickly.
Here, 'crecen' indicates the process of plants or flowers increasing in size or appearing abundantly in springtime.
En primavera, las flores crecen por todas partes.
In spring, flowers grow everywhere.
In this context, 'crecen' is used metaphorically to describe personal or internal development or improvement.