Short answer
Campanula, the bellflower, is a large genus with many species, so the answer depends on which one you have. Some compact types are sold as short-term flowering pot plants for indoors. Many others are garden perennials or biennials that do best outdoors. Check the plant tag for the exact name and hardiness.
Indoor-type campanula
Florist and garden-center campanulas are often grown for a cheerful display of blue, purple or white star or bell-shaped flowers. Some trailing types are used as hanging or windowsill plants (compare them with the best trailing indoor plants). Indoors, they generally want:
- Light: Bright light without hot, harsh midday sun. A bright windowsill works for many.
- Temperature: Cool to moderate rooms. Heat and dry air can shorten bloom.
- Water: Keep the soil evenly moist but not soggy, with good drainage.
- Deadheading: Remove spent flowers to encourage more buds and keep the plant tidy.
Indoors, many potted campanulas flower for several weeks and then decline. Treat them as seasonal unless you can give strong light and cool conditions.
Outdoor campanula
Many bellflowers are hardy garden perennials, with a long season of blooms in late spring and summer. Heights range from low carpets suited to rock gardens to tall cottage-garden spikes. Hardiness varies by species, so check yours rather than assuming.
Does campanula do well in pots?
Yes, particularly smaller or trailing types. Use a container with drainage holes and a free-draining potting mix, and avoid letting the pot dry out completely during summer. Pots outdoors in cold areas may need extra protection in winter, since roots are more exposed to freezing than those in the ground.
Do campanulas come back every year?
It depends. Many species are perennial and return from the same roots; some are biennials that flower in their second year; and a few are short-lived. The indoor pot plants may not return reliably if kept inside. Cutting back after flowering, and dividing crowded clumps, often extends the life of perennial types.
What is the average lifespan?
There is no single figure. Short-lived types may last a few years, while well-sited perennials can persist longer. Good drainage, moderate feeding and protection from slugs and snails all help.
Where is the best place to plant campanula?
Choose a spot with sun to partial shade, depending on the variety, and soil that drains well. In hot climates, some afternoon shade is often helpful. Slugs and snails can be a problem for young plants.
Moving a pot plant outdoors
If you bought a campanula in bloom, you can often move it outside after flowering once frost risk has passed, acclimatizing it gradually to wind and sun. Check that your plant is hardy in your region first, as some pot-sold types are tender.
Is campanula toxic?
Campanula is generally regarded as low in toxicity and is not typically listed among dangerous pet plants. Even so, no ornamental plant is meant to be eaten. Keep it out of reach of pets and children, and call a veterinarian or poison center if someone has eaten a substantial amount or seems unwell.
Related reading
If you enjoy seasonal pot plants, see our guide to taking an indoor hydrangea outside.
FAQ
Is campanula a perennial? Many are, but not all.
Can it be a houseplant? Compact types sold for indoors can be, usually short term.
Does it need deadheading? Yes, it encourages more flowers.