Lui measures the height of each of his bean plants. \begin{tabular}{|c|c|} \hline Bean plant & Height \\ \hline Plant 1 & 22 cm \\ \hline Plant 2 & 35 cm \\ \hline Plant 3 & 14 cm \\ \hline \end{tabular} How much longer is Plant $2$ than Plant $1$?  cm