Translation of "Grêlons" in English

Les grêlons étaient gros comme des balles de tennis.

The hailstones were as big as tennis balls.

Je regardai autour de moi. Je me trouvais sur ce qui semblait être une petite pelouse dans le jardin, entourée de buissons de rhododendrons, et je remarquai que leurs bourgeons mauves et violets tombaient en pluie sous les coups des grêlons.

I looked round me. I was on what seemed to be a little lawn in a garden, surrounded by rhododendron bushes, and I noticed that their mauve and purple blossoms were dropping in a shower under the beating of the hail-stones.