New Zealand Sowthistle Plant Care
Sonchus novae-zelandiae (Hook.f.) Garn.-Jones
Updated · Sources · How we source care data
Sonchus novae-zelandiae, commonly known as the dryland sow thistle, is a species of thistle in the family Asteraceae. It is endemic to the South Island of New Zealand and it is considered to be an endangered species.
Every 4–7 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for New Zealand Sowthistle?
Water New Zealand Sowthistle every 4–7 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–80°F (10–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the New Zealand Sowthistle Native To?
What Is the New Zealand Sowthistle?
New Zealand Sowthistle (Sonchus novae-zelandiae) belongs to the Asteraceae family within the Sonchus genus. New Zealand Sowthistle is native to the South Island of New Zealand and.
New Zealand Sowthistle displays an upright, branching herbaceous plant growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. New Zealand Sowthistle produces small yellow daisy-like flowers in clusters.
Leaf size: approximately 6 inches.
How Often Should You Water a New Zealand Sowthistle?
Sonchus novae-zelandiae requires watering every 4–7 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 4–7 days
Let soil partially dry between waterings
What Light Does the New Zealand Sowthistle Need?
New Zealand Sowthistle thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the New Zealand Sowthistle Prefer?
Sonchus novae-zelandiae grows best at temperatures of 50–80°F. New Zealand Sowthistle prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a New Zealand Sowthistle?
Well-draining, fertile soil with added compost or organic matter. Good drainage is essential for New Zealand Sowthistle to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a New Zealand Sowthistle?
Feed New Zealand Sowthistle every 6 months 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 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a New Zealand Sowthistle?
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 New Zealand Sowthistle?
New Zealand Sowthistle can be propagated through seeds, division of root ball. Similar propagation techniques also apply to species plantarum plant care, which shares the same genus.
Is the New Zealand Sowthistle Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list New Zealand Sowthistle, 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 New Zealand Sowthistle?
New Zealand Sowthistle is susceptible to aphids, caterpillars, slugs. 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 New Zealand Sowthistle Need?
New Zealand Sowthistle grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. New Zealand Sowthistle is native to the South Island of New Zealand and. In cooler regions, grow New Zealand Sowthistle as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
New Zealand Sowthistle 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 Sonchus genus — compare its care with other Sonchus species on PlantoScan.
Sonchus is part of the Asteraceae plant family — browse all Asteraceae genera and species.
New Zealand Sowthistle thrives in bright light and direct sun — see other bright-light plants.
More Sonchus Species
Other Sonchus species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Sonchus novae-zelandiae (Hook.f.) Garn.-Jones, family Asteraceae (first published in New Zealand J. Bot. 52(2): 186 (2014)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list New Zealand Sowthistle, 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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