Grewia rogersii Plant Care
Grewia rogersii Burtt Davy & Greenway
Updated · Sources · How we source care data
Grewia rogersii, the waterberg raisin is a species of plant in the family Malvaceae. It is generally considered a rare species as defined by the International Union for the Conservation of Nature and Natural Resources, but it can be abundant locally.
Every 7–14 days
Full sun to partial shade
60–85°F
40–70%
At a glance
How do you care for Grewia rogersii?
Plant Grewia rogersii in full sun to partial shade (USDA zones 13a) and water a young tree every 7–14 days until it is established. It tolerates temperatures of 60–85°F (16–29°C). Fertilize it every 6 months during the growing season.
What Is the Grewia rogersii?
Grewia rogersii (Grewia rogersii) belongs to the Malvaceae family within the Grewia genus.
Grewia rogersii displays an upright, spreading shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Grewia rogersii produces small, bell-shaped flowers in various colors.
Leaf size: approximately 3 inches.
How Often Should You Water a Grewia rogersii?
Water a young or newly planted Grewia rogersii every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established trees mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.
Watering Frequency
Every 7–14 days
Until established; then in dry spells
What Light Does the Grewia rogersii Need?
Grewia rogersii thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Grewia rogersii Prefer?
Grewia rogersii tolerates temperatures of 60–85°F. Grewia rogersii prefers humidity levels of 40–70%.
Temperature
60–85°F
Humidity
40–70%
What Soil Mix Works Best for a Grewia rogersii?
Well-draining sandy loam with added organic matter. Good drainage is essential for Grewia rogersii to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Grewia rogersii?
Feed Grewia rogersii every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees in good soil often need little extra feeding, so let weak growth or pale foliage guide you.
Stop feeding by late summer so new growth can harden before winter.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
Where Should You Plant a Grewia rogersii?
Choose a spot with full sun to partial shade and well-draining sandy loam with added organic matter. Avoid low spots where water collects after rain.
Grewia rogersii is suited to USDA Zone 13a.
Plant container-grown or balled-and-burlapped trees in spring or early autumn, setting the root flare at soil level, and water well after planting.
How Far Apart Should You Plant a Grewia rogersii?
Grewia rogersii can spread to about 4 ft (1.2 m) and reach about 6 ft (2 m) tall. Space plants about 4 ft (1.2 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.
Planning a row or hedge? Try the tree spacing calculator.
How Do You Prune a Grewia rogersii?
Prune Grewia rogersii 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 tree in one year.
How Do You Care for a Grewia rogersii in Winter?
Grewia rogersii is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.
How Do You Propagate a Grewia rogersii?
Grewia rogersii can be propagated through seeds, hardwood cuttings. Similar propagation techniques also apply to velvet grewia plant care, which shares the same genus.
Is the Grewia rogersii Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Grewia rogersii, 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 Grewia rogersii?
Grewia rogersii is susceptible to aphids, scale insects, spider mites. 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 Grewia rogersii Need?
Grewia rogersii grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Grewia rogersii as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Grewia rogersii 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 Grewia genus — compare its care with other Grewia species on PlantoScan.
Grewia is part of the Malvaceae plant family — browse all Malvaceae genera and species.
Grewia rogersii thrives in bright light and direct sun — see other bright-light plants.
More Grewia Species
Other Grewia species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Grewia rogersii Burtt Davy & Greenway, family Malvaceae (first published in Man. Pl. Transvaal 1: 41 (1926)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Grewia rogersii, 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 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.
