Swenson & Martinsson 319 (Abrotanella trilobata)

Photo: BogdanCC BY-SA 3.0via Wikimedia Commonsresized / cropped

Swenson & Martinsson 319 Plant Care

Abrotanella trilobata Swenson

Updated · Sources · How we source care data

This rare alpine plant is easily identified by its unique triangular-shaped leaves that form rosettes. Originating from the mountains of South America, Abrotanella trilobata is highly sought after by plant collectors for its striking appearance and resilience in harsh growing conditions.

🌱Herbs🌼Perennials🌻Annuals
Water

Every 7–14 days

Light

Full sun to partial shade

Temp

50–75°F

Humidity

40–60%

At a glance

How do you care for Swenson & Martinsson 319?

Plant Swenson & Martinsson 319 in full sun to partial shade (USDA zones 12a) and water a young shrub every 7–14 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 Swenson & Martinsson 319 Native To?

Native range2 countries

What Is the Swenson & Martinsson 319?

Swenson & Martinsson 319 (Abrotanella trilobata) belongs to the Asteraceae family within the Abrotanella genus. Swenson & Martinsson 319 is native to southern Argentina and southern Chile.

Swenson & Martinsson 319 displays a low rosette, clumping growth habit, reaching up to 0.5 ft tall with a spread of approximately 0.5 ft. Swenson & Martinsson 319 produces small yellow or white daisy-like flowers in clusters.

Leaf size: approximately 2 inches.

How Often Should You Water a Swenson & Martinsson 319?

Water a young or newly planted Swenson & Martinsson 319 every 7–14 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 7–14 days

Until established; then in dry spells

What Light Does the Swenson & Martinsson 319 Need?

Swenson & Martinsson 319 thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Swenson & Martinsson 319 Prefer?

Abrotanella trilobata tolerates temperatures of 50–75°F. Swenson & Martinsson 319 prefers humidity levels of 40–60%.

Temperature

50–75°F

Humidity

40–60%

What Soil Mix Works Best for a Swenson & Martinsson 319?

Well-draining sandy soil with added organic matter for moisture retention. Good drainage is essential for Swenson & Martinsson 319 to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Swenson & Martinsson 319?

Feed Swenson & Martinsson 319 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 Swenson & Martinsson 319?

Choose a spot with full sun to partial shade and well-draining sandy soil with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Swenson & Martinsson 319 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 Swenson & Martinsson 319?

Swenson & Martinsson 319 can spread to about 1 ft (0.2 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.2 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 Swenson & Martinsson 319?

Prune Swenson & Martinsson 319 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 Swenson & Martinsson 319 in Winter?

Swenson & Martinsson 319 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 Swenson & Martinsson 319?

Swenson & Martinsson 319 can be propagated through seeds, division of clumps.

Is the Swenson & Martinsson 319 Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Swenson & Martinsson 319, 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 Swenson & Martinsson 319?

Swenson & Martinsson 319 is susceptible to aphids, spider mites, whiteflies. 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 Swenson & Martinsson 319 Need?

Swenson & Martinsson 319 grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Swenson & Martinsson 319 is native to southern Argentina and southern Chile. In cooler regions, grow Swenson & Martinsson 319 as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 12a

Keep exploring plants

Swenson & Martinsson 319 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 Abrotanella genus — compare its care with other Abrotanella species on PlantoScan.

Abrotanella is part of the Asteraceae plant family — browse all Asteraceae genera and species.

Swenson & Martinsson 319 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: Abrotanella trilobata Swenson, family Asteraceae (first published in Pl. Syst. Evol. 197: 185, fig (1995)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Swenson & Martinsson 319, 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: Bogdan, CC BY-SA 3.0, Wikimedia Commons — original.
  • 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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