10 Cheron WHITE WINTER HARDY GLOXINIA Incarvillea Delavayi Flower Seeds *Comb S/H BLOOM TIME: May - July HARDINESS ZONE: 3 - 8 PLANT HEIGHT: 12 - 24" . . . PLANT SPACING: 18 - 24" LIGHT REQUIREMENTS: Sun . . . SOIL / WATER: Average Gloxinia has large trumpet shaped flowers and ferny foliage. They have a great tropical appearance but are very cold hardy. Gloxinia is great because its flowers bloom before the foliage emerges in the spring, so it is very showy! They also make excellent potted plants and cut or dried flowers.