Calytrix involucrata Plant Care
Calytrix involucrata J.M.Black
Updated · Sources · How we source care data
Calytrix involucrata, commonly known as cup fringe-myrtle, is a species of flowering plant in the myrtle family Myrtaceae and is endemic to the south of South Australia. It is a glabrous shrub with linear to elliptic leaves and clusters of white flowers sometimes tinged with pink, with 17 to 25 white stamens in a single row.
Every 7–10 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Calytrix involucrata?
Plant Calytrix involucrata in full sun to partial shade (USDA zones 12a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 50–80°F (10–27°C). Fertilize it every 6 months during the growing season.
Where Is the Calytrix involucrata Native To?
What Is the Calytrix involucrata?
Calytrix involucrata (Calytrix involucrata) belongs to the Myrtaceae family within the Calytrix genus. Calytrix involucrata is native to the south of South Australia.
Calytrix involucrata displays a compact, bushy shrub growth habit, reaching up to 3 ft tall with a spread of approximately 3 ft. Calytrix involucrata produces small, star-shaped flowers in shades of pink, white, or purple.
Leaf size: approximately 2 inches.
How Often Should You Water a Calytrix involucrata?
Water a young or newly planted Calytrix involucrata every 7–10 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.
Watering Frequency
Every 7–10 days
Until established; then in dry spells
What Light Does the Calytrix involucrata Need?
Calytrix involucrata thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Calytrix involucrata Prefer?
Calytrix involucrata tolerates temperatures of 50–80°F. Calytrix involucrata prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Calytrix involucrata?
Well-draining sandy loam with added organic matter like compost. Good drainage is essential for Calytrix involucrata to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Calytrix involucrata?
Feed Calytrix involucrata every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.
Stop feeding by late summer so new growth can harden before winter.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
Where Should You Plant a Calytrix involucrata?
Choose a spot with full sun to partial shade and well-draining sandy loam with added organic matter like compost. Avoid low spots where water collects after rain.
Calytrix involucrata is suited to USDA Zone 12a.
Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.
How Far Apart Should You Plant a Calytrix involucrata?
Calytrix involucrata can spread to about 3 ft (0.9 m) and reach about 3 ft (1 m) tall. Space plants about 3 ft (0.9 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.
Planning a row or hedge? Try the plant spacing calculator.
How Do You Prune a Calytrix involucrata?
Prune Calytrix involucrata while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.
If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.
How Do You Care for a Calytrix involucrata in Winter?
Calytrix involucrata is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.
How Do You Propagate a Calytrix involucrata?
Calytrix involucrata can be propagated through seeds, semi-hardwood cuttings. Similar propagation techniques also apply to bristleless starflower plant care, which shares the same genus.
Is the Calytrix involucrata Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Calytrix involucrata, 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 Calytrix involucrata?
Calytrix involucrata is susceptible to aphids, scale insects, 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 Calytrix involucrata Need?
Calytrix involucrata grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Calytrix involucrata is native to the south of South Australia. In cooler regions, grow Calytrix involucrata as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Calytrix involucrata 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 Calytrix genus — compare its care with other Calytrix species on PlantoScan.
Calytrix is part of the Myrtaceae plant family — browse all Myrtaceae genera and species.
Calytrix involucrata thrives in bright light and direct sun — see other bright-light plants.
More Calytrix Species
Other Calytrix species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Calytrix involucrata J.M.Black, family Myrtaceae (first published in Trans. & Proc. Roy. Soc. South Australia 52: 225 (1928)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Calytrix involucrata, 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.
