blue field flowers - cape lobelia ( (lobelia erinus)

4–8 8–15 africa are basal bellflower blossom blue broad campanulaceae cape edging erinus family field flower flowering flowers garden growing herb herbaceous higher lavender leaf leaves lilac lobelia long low margin meadow native nature oval perennial petal plant produce prostrate purple scrambling shrub slender sometimes southern species stems tall toothed trailing untoothed wildflower