Photo: J. L. Gómez-HechavarríaCC BY 4.0via iNaturalistresized / cropped
Cuban zinnia Plant Care
Zonanthus cubensis Griseb.
Updated · Sources · How we source care data
With its vibrant, neon yellow flowers that resemble miniature suns, Zonanthus cubensis is a striking plant native to the tropical forests of Cuba. The contrast between its bright blooms and deep green foliage make it a coveted addition to the collections of plant enthusiasts seeking unique and eye-catching specimens.
Every 5–7 days
Bright indirect light
65–80°F
50–70%
At a glance
How do you care for Cuban zinnia?
Water Cuban zinnia every 5–7 days, letting the top layer of soil dry out between waterings, and give it bright indirect light. It prefers temperatures of 65–80°F (18–27°C) and 50–70% humidity. Fertilize it every 2 months during the growing season.
Where Is the Cuban zinnia Native To?
What Is the Cuban zinnia?
Cuban zinnia (Zonanthus cubensis) belongs to the Gentianaceae family within the Zonanthus genus. Cuban zinnia is native to Cuba. Cuban zinnia is also known as Zonanthus.
Cuban zinnia displays a low rosette, spreading growth habit, reaching up to 2 ft tall with a spread of approximately 1 ft. Cuban zinnia produces small, trumpet-shaped flowers in shades of blue, purple, or white.
Leaf size: approximately 3 inches.
How Often Should You Water a Cuban zinnia?
Zonanthus cubensis requires watering every 5–7 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 5–7 days
Let soil partially dry between waterings
What Light Does the Cuban zinnia Need?
Cuban zinnia thrives in bright indirect light. Avoid placing Cuban zinnia in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect light
What Temperature and Humidity Does the Cuban zinnia Prefer?
Zonanthus cubensis grows best at temperatures of 65–80°F. Cuban zinnia prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–80°F
Humidity
50–70%
What Soil Mix Works Best for a Cuban zinnia?
Well-draining, loamy soil with added organic matter for moisture retention. Good drainage is essential for Cuban zinnia to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Cuban zinnia?
Feed Cuban zinnia every 2 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 2 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 Cuban zinnia?
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 Cuban zinnia?
Cuban zinnia can be propagated through seeds, division of offsets.
Is the Cuban zinnia Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Cuban zinnia, 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 Cuban zinnia?
Cuban zinnia 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 Cuban zinnia Need?
Cuban zinnia grows outdoors in USDA Zone 11a – 12b. It survives winters down to planting zone 11a. Cuban zinnia is native to Cuba. In cooler regions, grow Cuban zinnia as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 11a – 12b
Keep exploring plants
Cuban zinnia 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 Zonanthus genus — compare its care with other Zonanthus species on PlantoScan.
Zonanthus is part of the Gentianaceae plant family — browse all Gentianaceae genera and species.
Cuban zinnia 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: Zonanthus cubensis Griseb., family Gentianaceae (first published in J. Proc. Linn. Soc., Bot. 6: 145 (1862)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Cuban zinnia, 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: J. L. Gómez-Hechavarría, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 11a – 12b, estimated from the plant's typical growing conditions.
- 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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