Scarlet Petunia Plant Care
Petunia exserta Stehmann
Updated · Sources · How we source care data
Petunia exserta is a rare member of the genus Petunia, endemic to the Serras de Sudeste in southern Brazil. First described in 1987, only fourteen plants were found in the wild during an expedition in 2007.
Full sun to part shade
At a glance
How do you care for Scarlet Petunia?
Plant Scarlet Petunia in full sun to part shade.
What Is the Scarlet Petunia?
Scarlet Petunia (Petunia exserta) belongs to the Solanaceae family within the Petunia genus. Scarlet Petunia is native to the wild during an expedition in 2007.
Scarlet Petunia displays a compact, mounding habit growth habit, reaching up to tall with a spread of approximately . Scarlet Petunia produces abundant trumpet-shaped flowers in various colors.
What Light Does the Scarlet Petunia Need?
Scarlet Petunia thrives in full sun to part shade.
Light Requirement
Full sun to part shade
What Soil Mix Works Best for a Scarlet Petunia?
Well-draining, fertile soil with added compost or organic matter. Good drainage is essential for Scarlet Petunia to prevent waterlogging, which leads to root rot and fungal issues.
Where Should You Plant a Scarlet Petunia?
Choose a spot with full sun to part shade and well-draining, fertile soil with added compost or organic matter. Avoid low spots where water collects after rain.
Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.
How Do You Prune a Scarlet Petunia?
Prune Scarlet Petunia while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.
If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.
How Do You Care for a Scarlet Petunia in Winter?
Water deeply in late autumn before the ground freezes, and spread a 5–8 cm (2–3 in) layer of mulch over the root zone, keeping it away from the trunk.
Young and container-grown shrubs need extra protection: roots in a pot freeze much more easily than roots in the ground.
How Do You Propagate a Scarlet Petunia?
Scarlet Petunia can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to petunia plant care, which shares the same genus.
Is the Scarlet Petunia Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Scarlet Petunia, 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 Scarlet Petunia?
Scarlet Petunia 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.
Keep exploring plants
Scarlet Petunia 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 Petunia genus — compare its care with other Petunia species on PlantoScan.
Petunia is part of the Solanaceae plant family — browse all Solanaceae genera and species.
Scarlet Petunia 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: Petunia exserta Stehmann, family Solanaceae (first published in Napaea 2: 19 (-20), fig. 1987) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Scarlet Petunia, 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.
- 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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