Also known as Australian Harebell · Rock Isotoma · Rock Isotome
Isotoma axillaris is a charming perennial with star-shaped blue, purple, or white flowers. It's a delightful addition to borders and containers, offering continuous bloom
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun to Partial Shade
75% intensity
Prefers bright, indirect light. Can tolerate full sun if kept consistently moist, but may scorch in intense afternoon sun.
Regular
50% intensity
Keep soil consistently moist but not waterlogged. Allow top inch of soil to dry out between waterings.
Well-drained
50% intensity
Moderate
50% intensity
Ideal temperatures are between 15°C and 24°C. Protect from frost.
Outdoor
50% intensity
Moderate
50% intensity
Feed with a balanced liquid fertilizer every 4-6 weeks during the growing season.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water Isotoma axillaris regularly when the top inch of soil feels dry. Avoid overwatering, as this can lead to root rot. Ensure good drainage to prevent waterlogging, especially during cooler months.
Reduce watering frequency in winter when the plant is dormant.
Prune Isotoma axillaris to maintain a tidy shape and encourage bushier growth. Deadhead spent flowers regularly to promote continuous blooming.
Lightly trim back the plant after the main flowering period to encourage a second flush of blooms in late summer or early autumn.
Propagate Isotoma axillaris from seed sown in spring, or from softwood cuttings taken in late spring or early summer. Seeds germinate best at around 20°C.
Cuttings should be rooted in a well-draining propagation mix in a warm, humid environment.
Repot Isotoma axillaris every 1-2 years, or when the plant becomes root-bound. Use a good quality, free-draining potting mix. Choose a pot that is slightly larger than the current one.
Repotting is best done in early spring before new growth begins.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Isotoma Axillaris (Isotoma axillaris)
Where Isotoma Axillaris (Isotoma axillaris) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Family | Campanulaceae |
| Genus | Isotoma |
| Species | Isotoma axillaris |
Similar in genus Isotoma
Answers based on plant encyclopedia data
