blue violet lobelia erinus sapphire flowers or edging lobelia

africa african arboretum background baskets bloom blooming blossom blue botanical botany bouquet boxes breed bunch campanulaceae cape cultivar cultivated dark edging erinus flora floral floret flower flowers gallen garden gardens hanging hybrid lobelia lobelie macro malawi many namibia natural nature pendula petal plant popular purple saint saphir sapphire small south summer swiss trailing violet window