Aestival in a sentence as an adjective

Sassafras, tulip trees, pawpaws, vitis aestivalis, all plants that only seemed before to only thrive down in the valley closer to the lake ... they're establishing themselves up here above the escarpment.

Aestival definitions

adjective

(rare) of or occurring in summer; "the sky was a burnished aestival blue"; "estival winds"

See also: estival