Rose lomatium Plant Care
Lomatium roseanum Cronquist
Updated · Sources · How we source care data
Lomatium roseanum, adobe parsley, also known as adobe lomatium and rose-flowered desert-parsley, is a very rare plant of the Western U.S., known only from northwestern Nevada and southeastern Oregon, and which may also occur in northeastern California. The largest populations occur on the Sheldon National Wildlife Refuge.
Every 7–14 days
Full sun to partial shade
50–80°F
40–60%
At a glance
How do you care for Rose lomatium?
Water Rose lomatium every 7–14 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 40–60% humidity. Fertilize it every 6 months during the growing season.
What Is the Rose lomatium?
Rose lomatium (Lomatium roseanum) belongs to the Apiaceae family within the Lomatium genus. Rose lomatium is also known as Rose biscuitroot.
Rose lomatium displays a clumping perennial herb growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Rose lomatium produces small clusters of yellow flowers in umbels.
Leaf size: approximately 4 inches.
How Often Should You Water a Rose lomatium?
Lomatium roseanum requires watering every 7–14 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 7–14 days
Let soil partially dry between waterings
What Light Does the Rose lomatium Need?
Rose lomatium thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Rose lomatium Prefer?
Lomatium roseanum grows best at temperatures of 50–80°F. Rose lomatium prefers humidity levels of 40–60%.
Temperature
50–80°F
Humidity
40–60%
What Soil Mix Works Best for a Rose lomatium?
Well-draining sandy soil with good organic content. Good drainage is essential for Rose lomatium to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Rose lomatium?
Feed Rose lomatium 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 Rose lomatium?
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 Rose lomatium?
Rose lomatium can be propagated through seeds, division of roots. Similar propagation techniques also apply to lomatium plant care, which shares the same genus.
Is the Rose lomatium Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Rose lomatium, 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 Rose lomatium?
Rose lomatium is susceptible to aphids, spider mites, powdery mildew. 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 Rose lomatium Need?
Rose lomatium grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Rose lomatium as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Rose lomatium 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 Lomatium genus (family Apiaceae) — search all Lomatium species in the plant lookup.
Rose lomatium thrives in bright light and direct sun — see other bright-light plants.
More Lomatium Species
Other Lomatium species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Lomatium roseanum Cronquist, family Apiaceae (first published in Great Basin Naturalist 52: 75 (1992)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Rose lomatium, 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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