Symphytum grandiflorum 'Goldsmith' Creamy white bell-shaped, drooping flowers bloom in May on short spikes above the bright yellow-green foliage. Grows 10 to 12 inches tall and 18 to 24 inches wide, forming rugged spreading clumps of bold foliage. Part to full shade in organically rich but well-drained soil. Will spread well if the soil is moist. Tolerates dry shade once established. Large-Flowered Comfrey