Botanical Name: Campanula isophylla
Put Campanula flowers in a hanging basket or tall pot and allow its long stems studded with bell-shaped blooms to spill over the side of the container.
This trailing form also goes by the common names Italian Bellflower, Star of Bethlehem and Falling Stars. Popular varieties include snowy white 'Alba' and 'Stella White'...and violet-blue 'May' and 'Stella Blue'.
This campanula flower is easy to grow indoors. It only demands cool air, moist soil and indirect sunlight. Treat it right and you can expect masses of these violet-blue flowers to bloom in mid-to-late summer right through fall.
Keep your plant. It's a perennial and will flower year after year. Cut stems back (close to the base of the plant) in late fall or early winter, after flowering season. It doesn't need a cold season in winter. Give it the same temperature and light as usual. Keep the soil on the dry side until you see new growth in spring, then resume with normal watering.
To repot...or not. Repot campanula plants when their roots are visible at the surface of the soil. Wait till winter or early spring to repot -- never while it's blooming.
Origin: Northern Italy
Height: Stems trail up to 1 ft (30 cm)
Light: Bright indirect light. Some direct sun in winter is fine.
Water: Keep the soil moist, but not soggy while plant is growing and flowering. Soggy soil will cause root rot. After flowering, allow soil to become almost dry between waterings.
Humidity: Average room humidity. High humidity can lead to gray mold on leaves. Cut off any affected areas and treat plant with a fungicide.
Temperature: Cool to average 45-65°F/7-18°C. Keep your Campanula plant away from doorways and air vents. Hot or cold drafts will scorch its leaves.
Soil: Any good potting mix that holds moisture. African violet mix works well.
Fertilizer: Feed every 2 weeks spring through fall with a balanced liquid fertilizer diluted by half.
Propagation: Take stem tip cuttings in spring or early summer and root them in water or moist potting mix. Sow seeds in spring.