Campanula petiolata Plant Care
Campanula petiolata A.DC.
Updated · Sources · How we source care data
Campanula petiolata is a flowering plant that is called western harebell when it is distinguished from Campanula rotundifolia or simply harebell when it is considered the same species. It is in the bellflower family (Campanulaceae).
Every 7–10 days
Full sun to partial shade
50–75°F
40–60%
At a glance
How do you care for Campanula petiolata?
Water Campanula petiolata every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–75°F (10–24°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
Where Is the Campanula petiolata Native To?
What Is the Campanula petiolata?
Campanula petiolata (Campanula petiolata) belongs to the Campanulaceae family within the Campanula genus. Campanula petiolata is native to areas of western North America with continental climates.
Campanula petiolata displays an upright, spreading perennial growth habit, reaching up to 1 ft tall with a spread of approximately 1 ft. Campanula petiolata produces bell-shaped flowers in various colors like blue, purple, pink, or white.
Leaf size: approximately 3 inches.
How Often Should You Water a Campanula petiolata?
Campanula petiolata requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Campanula petiolata Need?
Campanula petiolata thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Campanula petiolata Prefer?
Campanula petiolata grows best at temperatures of 50–75°F. Campanula petiolata prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Campanula petiolata?
Well-draining, fertile soil with added compost for nutrients. Good drainage is essential for Campanula petiolata to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Campanula petiolata?
Feed Campanula petiolata every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Campanula petiolata?
Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Campanula petiolata?
Campanula petiolata can be propagated through seeds, division of clumps, stem cuttings. Similar propagation techniques also apply to fairy's thimble plant care, which shares the same genus.
Is the Campanula petiolata Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Campanula petiolata, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Campanula petiolata?
Campanula petiolata is susceptible to aphids, slugs, snails. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Campanula petiolata Need?
Campanula petiolata grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Campanula petiolata is native to areas of western North America with continental climates. In cooler regions, grow Campanula petiolata as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Campanula petiolata is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Campanula genus — compare its care with other Campanula species on PlantoScan.
Campanula is part of the Campanulaceae plant family — browse all Campanulaceae genera and species.
Campanula petiolata thrives in bright light and direct sun — see other bright-light plants.
More Campanula Species
Other Campanula species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Campanula petiolata A.DC., family Campanulaceae (first published in Monogr. Campan. : 278 (1830)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Campanula petiolata, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 12a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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