Illustration
Oregold
Rosa 'Tanolg'
Also called miss harp, anneliese rothenberger and silhouette
Oregold blooms from May through October.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Oregold
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 6–10. Expect it to reach about 5 ft tall and 4 ft wide at maturity, in roughly 3 years (a house reading).
No toxicity note is on file for Oregold. 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 Oregold
Plant Oregold 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 8, the middle of its hardy zones 6 to 10, spring means February to April 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 8, the middle of this plant's hardy range, start with zone 8 in February. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Oregold get?
5 fttall5 ft 7 inan adult4 ftwideSee Oregold 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 Oregold
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Oregold about 4 ft apart, center to center, so each plant has room to reach its full width.
Add Oregold 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
Oregold's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 14 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.
- plants.rutgersln.comRutgers Landscape & Nursery, NetPS Plant Finder recordheight, spread, hardiness zones, sun, water, bloom months and color, trait tags and soil
- HelpMeFind Rosesheight, spread, hardiness zones, bloom months and color, trait tags and diseases
- Heirloom Rosesheight, spread, hardiness zones, bloom months and color and trait tags
- Nature Hills Nurseryheight, spread, hardiness zones, sun, years to mature size and trait tags
- HelpMeFind Rosesheight, spread, hardiness zones and trait tags
- regannursery.comRegan Nurseryheight, spread, hardiness zones and trait tags
- Clemson Home and Garden Information CenterClemson Cooperative Extension Home & Garden Information Centersun, water and soil
- US plant patent (Google Patents)Google Patents, OCR textbloom months and color and diseases
- NC State Extensiongenus Rosasoil and pests
- ASPCAAnimal Poison Control, Toxic and Non-Toxic Plantstoxicity
- Clemson Home and Garden Information CenterClemson Cooperative Extension Home & Garden Information Centerdiseases
- Clemson Home and Garden Information CenterClemson Cooperative Extension Home & Garden Information Centerpests
- Missouri Botanical GardenPests and Problemsdiseases
- summerwindsnursery.comSummerWinds Nursery (California garden-center chain)trait tags
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.