Illustration
Savannah
Rosa 'Korvioros'
Also called savannah sunbelt and sunbelt savannah
Savannah blooms from May through October.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Savannah
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 5–9. Expect it to reach about 4 ft tall and 3 ft wide at maturity, in roughly 3 years (a house reading).
No toxicity note is on file for Savannah. That is not a clearance: check its safety for people and pets before planting.
What was checked
Mature height and spread, hardiness zones, sun, water, bloom months and color and the trait tags were checked against named botanical sources for this plant, with what the sources could not settle written down; years to mature size rests on a recorded house rule where no publisher states one, and is marked so; its common name and alternate names have not been checked yet. Each fact above carries its own mark. The planting, spacing and size sections are derived from these checked facts by a fixed rule, not checked separately, and the plant type is the library's own classification.
When to plant Savannah
Plant Savannah in early spring as soon as the soil is workable, or in early fall at least six weeks before your first frost, so roots establish in cool weather. In zone 7, the middle of its hardy zones 5 to 9, spring means March to May and fall means September or October. Once settled, it blooms from May to October.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 7, the middle of this plant's hardy range, start with zone 7 in March. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Savannah get?
4 fttall5 ft 7 inan adult3 ftwideSee Savannah in a garden plan: the planner shows it in 3D beside everything else you add, growing toward this size over the years.
How far apart to plant Savannah
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Savannah about 3 ft apart, center to center, so each plant has room to reach its full width.
Add Savannah to a garden plan and the planner draws it at its full width, so you see the spacing before you buy.
Where these facts come from
Savannah's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 19 published sources on August 2, 2026. Each one is linked below with every fact it carried, which can include a fact this page still marks as not yet checked, because a source carrying a value is not the same as the value being held to the standard. Facts not in that list, and the planting, spacing and size sections, are not covered by these sources.
- emerisa.comEmerisa Gardens (nursery)height, spread, hardiness zones, sun, water, bloom months and color and soil
- plants.shopsteins.comStein's Garden & Home plant database (nursery)height, spread, sun, water, bloom months and color, trait tags and soil
- US plant patent (Google Patents)US Plant Patent PP26,285 (assignee W. Kordes Soehne Rosenschulen GmbH...height, spread, hardiness zones, bloom months and color, trait tags and diseases
- bloomables.comBloomables (Star Roses and Plants consumer brand, the US introducer's...height, spread, hardiness zones, sun and trait tags
- Heirloom Rosesown-root grower and retailerheight, spread, hardiness zones, sun and trait tags
- HelpMeFind Rosesheight, spread, bloom months and color and trait tags
- greenheartfarms.comGreenheart Farms (licensed Sunbelt propagator)height, spread, hardiness zones and trait tags
- NC State ExtensionPlant Toolbox, Rosasun, soil, pests and toxicity
- regannursery.comRegan Nursery (US retail rose nursery)height, spread, hardiness zones and trait tags
- antiqueroseemporium.comAntique Rose Emporium (nursery, Texas)height, hardiness zones and trait tags
- HelpMeFind Rosesheight, spread and trait tags
- highcountryroses.comHigh Country Roses (nursery)height, hardiness zones and trait tags
- northlandrosarium.comNorthland Rosarium (US retail rose nursery)height, spread and trait tags
- Clemson Home and Garden Information CenterClemson Cooperative Extension HGIC, Growing Roseswater and soil
- ASPCAAnimal Poison Control, Toxic and Non-Toxic Plantstoxicity
- Clemson Home and Garden Information CenterClemson Cooperative Extension HGIC, Rose Diseasesdiseases
- Clemson Home and Garden Information CenterClemson Cooperative Extension HGIC, Rose Insects & Related Pestspests
- gardennursery.netGarden Nursery (nursery)hardiness zones
- medfordnursery.comMedford Nursery (wholesale nursery)hardiness zones
How the checking works, and what each standard covers, is on the verified plants page.
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Design a garden with this
Drop this plant onto a 3D plan, see how it fills in, and watch your whole garden bloom across the year.