Bellflower Isabella flower seed has purple bell-shaped flowers 1/2 to 1 1/2 inches long with the flowers trailing at the very end of the green foliage. Isabella keeps its rounded shape even in the heat, showing how hardy this plant is.
Bellflower flower seed requires light to germinate, so don't cover with soil. Instead, lightly press the seeds into the soil to ensure good contact and keep moist until germination. If starting flower seeds indoors, use a seed-starting mix and bottom water so mold won't form on the mix.