Photo: Matt LavinCC BY-SA 2.0via Wikimedia Commonsresized / cropped
Lygodesmia spinosa Plant Care
Pleiacanthus spinosus (Nutt.) Rydb.
Updated · Sources · How we source care data
Lygodesmia spinosaStephanomeria spinosa
Every 7–10 days
Full sun to partial shade
60–80°F
40–70%
At a glance
How do you care for Lygodesmia spinosa?
Water Lygodesmia spinosa every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–80°F (16–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Lygodesmia spinosa Native To?
What Is the Lygodesmia spinosa?
Lygodesmia spinosa (Pleiacanthus spinosus) belongs to the Asteraceae family within the Pleiacanthus genus. Lygodesmia spinosa is native to the western United States from Montana and Idaho to southern California and Arizona. Lygodesmia spinosa is also known as Stephanomeria spinosa.
Lygodesmia spinosa displays a compact, clumping perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 1.5 ft. Lygodesmia spinosa produces small daisy-like flowers in various colors.
Leaf size: approximately 4 inches.
How Often Should You Water a Lygodesmia spinosa?
Pleiacanthus spinosus requires watering every 7–10 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 7–10 days
Let soil partially dry between waterings
What Light Does the Lygodesmia spinosa Need?
Lygodesmia spinosa thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Lygodesmia spinosa Prefer?
Pleiacanthus spinosus grows best at temperatures of 60–80°F. Lygodesmia spinosa prefers humidity levels of 40–70%.
Temperature
60–80°F
Humidity
40–70%
What Soil Mix Works Best for a Lygodesmia spinosa?
Well-draining sandy loam with added organic matter for moisture retention. Good drainage is essential for Lygodesmia spinosa to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Lygodesmia spinosa?
Feed Lygodesmia spinosa 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 Lygodesmia spinosa?
Repot every 2-3 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 Lygodesmia spinosa?
Lygodesmia spinosa can be propagated through seeds, division of offsets.
Is the Lygodesmia spinosa Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Lygodesmia spinosa, 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 Lygodesmia spinosa?
Lygodesmia spinosa 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 Lygodesmia spinosa Need?
Lygodesmia spinosa grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Lygodesmia spinosa is native to the western United States from Montana and Idaho to southern California and Arizona. In cooler regions, grow Lygodesmia spinosa as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Lygodesmia spinosa 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 Pleiacanthus genus — compare its care with other Pleiacanthus species on PlantoScan.
Pleiacanthus is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Lygodesmia spinosa 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: Pleiacanthus spinosus (Nutt.) Rydb., family Asteraceae (first published in Fl. Rocky Mts. 1023, 1069 (1917)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Lygodesmia spinosa, 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: Matt Lavin, CC BY-SA 2.0, Wikimedia Commons — original.
- Hardiness zone: USDA Zone 13a, 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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