Myosotis cinerascens Plant Care

Myosotis cinerascens Petrie

Updated · Sources · How we source care data

Myosotis × cinerascens is a hybrid species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Donald Petrie described M.

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Water

Every 3–5 days

Light

Full sun to partial shade

Temp

50–75°F

Humidity

40–60%

At a glance

How do you care for Myosotis cinerascens?

Plant Myosotis cinerascens in full sun to partial shade (USDA zones 12a) and water a young shrub every 3–5 days until it is established. It tolerates temperatures of 50–75°F (10–24°C). Fertilize it every 6 months during the growing season.

Where Is the Myosotis cinerascens Native To?

Native range1 country

What Is the Myosotis cinerascens?

Myosotis cinerascens (Myosotis cinerascens) belongs to the Boraginaceae family within the Myosotis genus. Myosotis cinerascens is native to the South Island of New Zealand.

Myosotis cinerascens displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Myosotis cinerascens produces small, delicate blue flowers with yellow centers.

Leaf size: approximately 1 inches.

How Often Should You Water a Myosotis cinerascens?

Water a young or newly planted Myosotis cinerascens every 3–5 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 3–5 days

Until established; then in dry spells

What Light Does the Myosotis cinerascens Need?

Myosotis cinerascens thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Myosotis cinerascens Prefer?

Myosotis cinerascens tolerates temperatures of 50–75°F. Myosotis cinerascens prefers humidity levels of 40–60%.

Temperature

50–75°F

Humidity

40–60%

What Soil Mix Works Best for a Myosotis cinerascens?

Well-draining, fertile soil with good organic content. Good drainage is essential for Myosotis cinerascens to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Myosotis cinerascens?

Feed Myosotis cinerascens 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 Myosotis cinerascens?

Choose a spot with full sun to partial shade and well-draining, fertile soil with good organic content. Avoid low spots where water collects after rain.

Myosotis cinerascens 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 Myosotis cinerascens?

Myosotis cinerascens can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 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 Myosotis cinerascens?

Prune Myosotis cinerascens 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 Myosotis cinerascens in Winter?

Myosotis cinerascens 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 Myosotis cinerascens?

Myosotis cinerascens can be propagated through seeds. Similar propagation techniques also apply to mountain forget-me-not plant care, which shares the same genus.

Is the Myosotis cinerascens Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Myosotis cinerascens, 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 Myosotis cinerascens?

Myosotis cinerascens is susceptible to aphids, 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 Myosotis cinerascens Need?

Myosotis cinerascens grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Myosotis cinerascens is native to the South Island of New Zealand. In cooler regions, grow Myosotis cinerascens as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 12a

Keep exploring plants

Myosotis cinerascens 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 Myosotis genus — compare its care with other Myosotis species on PlantoScan.

Myosotis is part of the Boraginaceae plant family — browse all Boraginaceae genera and species.

Myosotis cinerascens thrives in bright light and direct sun — see other bright-light plants.

More Myosotis Species

Other Myosotis species in PlantoScan's care catalogue share similar watering, light, and soil preferences:

Sources

  • Scientific name & taxonomy: Myosotis cinerascens Petrie, family Boraginaceae (first published in Trans. & Proc. New Zealand Inst. 50: 207 (1917 publ. 1918)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Myosotis cinerascens, 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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