Photo: Kurt Stüber [1]CC BY-SA 3.0via Wikimedia Commonsresized / cropped
Tall Bellflower Plant Care
Trimorpha acris (L.) Gray
Updated · Sources · How we source care data
With its striking metallic silver leaves that shimmer in the sunlight, Trimorpha acris is a rare find originating from the tropical rainforests of Southeast Asia. This unique plant is highly sought after by collectors for its exotic appearance and ability to thrive in humid, warm environments.
Every 7–14 days
Full sun to partial shade
65–75°F
50–70%
At a glance
How do you care for Tall Bellflower?
Water Tall Bellflower every 7–14 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 65–75°F (18–24°C) and 50–70% humidity. Fertilize it every month during the growing season.
Where Is the Tall Bellflower Native To?
- Albania
- Austria
- Belarus
- Belgium
- Bosnia and Herzegovina
- Bulgaria
- Canada
- Croatia
- Cyprus
- Czechia
- Denmark
- Estonia
- Finland
- France
- Germany
- Greece
- Hungary
- Iceland
- Ireland
- Italy
- Latvia
- Lithuania
- Luxembourg
- Malta
- Moldova
- Montenegro
- North Macedonia
- Norway
- Poland
- Portugal
- Romania
- Russia
- Serbia
- Slovakia
- Slovenia
- Spain
- Sweden
- Switzerland
- The Netherlands
- Ukraine
- United Kingdom
- United States
What Is the Tall Bellflower?
Tall Bellflower (Trimorpha acris) belongs to the Asteraceae family within the Trimorpha genus. Tall Bellflower is native to Canada, colder parts of the United States, northern, central, and southeastern Asia, and most of Europe. Tall Bellflower is also known as Bellflower, Inula acris, Trimorpha acris.
Tall Bellflower displays a low rosette, spreading ground cover growth habit, reaching up to 1 ft tall with a spread of approximately 1 ft. Tall Bellflower produces small daisy-like flowers in various colors.
Leaf size: approximately 3 inches.
How Often Should You Water a Tall Bellflower?
Trimorpha acris requires watering every 7–14 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 7–14 days
Let soil partially dry between waterings
What Light Does the Tall Bellflower Need?
Tall Bellflower thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Tall Bellflower Prefer?
Trimorpha acris grows best at temperatures of 65–75°F. Tall Bellflower prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–75°F
Humidity
50–70%
What Soil Mix Works Best for a Tall Bellflower?
Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Tall Bellflower to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Tall Bellflower?
Feed Tall Bellflower every month 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 month
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Tall Bellflower?
Repot every 1-2 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 Tall Bellflower?
Tall Bellflower can be propagated through seeds, division of clumps.
Is the Tall Bellflower Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Tall Bellflower, 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 Tall Bellflower?
Tall Bellflower is susceptible to aphids, whiteflies, spider mites. 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 Tall Bellflower Need?
Tall Bellflower grows outdoors in USDA Zone 3a – 8b. It survives winters down to planting zone 3a. Tall Bellflower is native to Canada, colder parts of the United States, northern, central, and southeastern Asia, and most of Europe.
Hardiness Zone
Zone 3a – 8b
Keep exploring plants
Tall Bellflower 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 Trimorpha genus (family Asteraceae) — search all Trimorpha species in the plant lookup.
Tall Bellflower thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Trimorpha acris (L.) Gray, family Asteraceae (first published in Gray, Nat. Arr. Brit. Pl. 2. 1821. 466 1821) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Tall Bellflower, 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.
- Photo: Kurt Stüber [1], CC BY-SA 3.0, Wikimedia Commons — original.
- Hardiness zone: USDA Zone 3a – 8b, estimated from the plant's typical growing conditions.
- 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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