Robust checkerbloom Plant Care
Sidalcea robusta A.Heller ex Roush
Updated · Sources · How we source care data
Sidalcea robusta is an uncommon species of flowering plant in the mallow family known by the common name Butte County checkerbloom.
Every 7–10 days
Full sun to part shade
50–80°F
40–70%
At a glance
How do you care for Robust checkerbloom?
Water Robust checkerbloom every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to part shade. It prefers temperatures of 50–80°F (10–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
What Is the Robust checkerbloom?
Robust checkerbloom (Sidalcea robusta) belongs to the Malvaceae family within the Sidalcea genus. Robust checkerbloom is also known as Robust false mallow.
Robust checkerbloom displays an upright, clumping perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Robust checkerbloom produces spikes of small, pink to purple flowers.
Leaf size: approximately 4 inches.
How Often Should You Water a Robust checkerbloom?
Sidalcea robusta 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 Robust checkerbloom Need?
Robust checkerbloom thrives in full sun to part shade.
Light Requirement
Full sun to part shade
What Temperature and Humidity Does the Robust checkerbloom Prefer?
Sidalcea robusta grows best at temperatures of 50–80°F. Robust checkerbloom prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Robust checkerbloom?
Rich, moist, well-draining soil with high organic matter content. Good drainage is essential for Robust checkerbloom to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Robust checkerbloom?
Feed Robust checkerbloom 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 Robust checkerbloom?
Divide and 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 Robust checkerbloom?
Robust checkerbloom can be propagated through seeds, division of root ball. Similar propagation techniques also apply to california checkerbloom plant care, which shares the same genus.
Is the Robust checkerbloom Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Robust checkerbloom, 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 Robust checkerbloom?
Robust checkerbloom is susceptible to aphids, spider mites, leafhoppers. 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 Robust checkerbloom Need?
Robust checkerbloom grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Robust checkerbloom as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Robust checkerbloom 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 Sidalcea genus (family Malvaceae) — search all Sidalcea species in the plant lookup.
Robust checkerbloom thrives in bright light and direct sun — see other bright-light plants.
More Sidalcea Species
Other Sidalcea species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Sidalcea robusta A.Heller ex Roush, family Malvaceae (first published in Ann. Missouri Bot. Gard. 18: 205 (1931)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Robust checkerbloom, 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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