  Let $X$ be a rational surface obtained by blowing up at a configuration
$\mathcal{C}$ of infinitely near points over a Hirzebruch surface
$\mathbb{F}_\delta$. We prove that there exist two positive integers $a \leq b$
such that the cone of curves of $X$ is finite polyhedral and minimally
generated when $\delta \geq a$, and the Cox ring of $X$ is finitely generated
whenever $\delta \geq b$. The integers $a$ and $b$ depend only on a
combinatorial object (a graph decorated with arrows) representing the strict
transforms of the exceptional divisors, their intersections and those with the
fibers and special section of $\mathbb{F}_\delta$.
