Species
Blanc Double de Coubert
White · repeat-blooming · Zones 3-9
Species Rose
Agnes
Rare double-yellow rugosa, richly scented.
The Agnes is a yellow species rose valued for its generous early-summer display and memorable fragrance. Below you'll find a full profile of Agnes — its characteristics, how to grow it, where to use it in the garden, and answers to the questions gardeners ask most.
About Agnes
Agnes belongs to the species & wild roses, a class defined by simple five-petaled single flowers, usually followed by ornamental hips. As one of the wild ancestors of the garden rose, it trades repeat bloom for toughness, wildlife value, and an easy, natural beauty.
In flower, Agnes is yellow and gives one memorable, concentrated display, carrying a strong, carrying fragrance. It is hardy across USDA zones 3-9, so it suits a wide range of gardens with the right seasonal care.
Characteristics and form
Agnes makes arching, often large and informal plant, typically around a wide range, roughly 3 to 10 feet tall and wide. The blooms are simple five-petaled single flowers, usually followed by ornamental hips, small to medium in size, set against often distinctive — sometimes ferny or grey-green foliage. Knowing a rose's habit and mature size is the key to placing it well: give Agnes room to reach its full spread without crowding its neighbors, which also keeps air moving through the plant and disease at bay.
How to grow Agnes
Plant Agnes where it will get at least six hours of direct sun a day in fertile, well-drained soil with good air movement around it. In cold climates, set the graft union — the swollen knob where the variety joins the rootstock — at or just below the soil line; in mild climates, keep it at soil level. Once planted, water deeply and less often to encourage deep, drought-resistant roots.
- Light: Full sun, six hours or more; morning sun is best because it dries dew early and limits disease.
- Soil: Rich and well-drained, slightly acidic at about pH 6.0–6.5. Improve heavy or sandy soil with plenty of compost before planting.
- Water: Deep, infrequent soakings at the base rather than frequent light sprinkling; more in heat, sandy soil, or containers.
- Feeding: A balanced rose fertilizer in early spring to support its single flush.
- Pruning: Prune it after the main flush and only lightly, since it flowers on wood formed the previous year.
Bloom habit: Once (early summer). Agnes blooms once, in a single generous flush in early summer. Leave the last flowers to form hips for autumn and winter interest.
Where to use Agnes in the garden
Agnes suits informal hedges, wildlife and naturalistic gardens, and wilder corners of the garden. Let it grow naturally in a hedge or wild planting where its hips and habit can be enjoyed. For more ideas, see our guide to companion plants for roses.
Common problems and care
Species roses are typically tough and disease-resistant, asking very little of the gardener. Watch for the usual rose troubles — black spot, powdery mildew, and aphids — and head them off with good air flow, base watering, and a tidy autumn clean-up. See our full guide to rose diseases and pests for identification and treatment.
Agnes — frequently asked questions
How big does Agnes get?
Agnes typically grows about a wide range, roughly 3 to 10 feet tall and wide, forming a arching, often large and informal plant. Its final size depends on your climate and how you prune it.
Is Agnes fragrant?
Yes — Agnes has a strong, carrying fragrance, and scent is one of the reasons to grow it.
Does Agnes bloom more than once a season?
No. Agnes blooms once, in a single generous flush in early summer, rather than repeating through the season — so enjoy its main display and let it set hips afterward.
What hardiness zones does Agnes grow in?
Agnes is hardy in USDA zones 3-9. That range describes the winter cold it can survive; gardeners colder than zone 3 should give it winter protection or grow it in a movable container.
Is Agnes easy to grow?
Species roses are typically tough and disease-resistant, asking very little of the gardener. Give Agnes full sun, well-drained soil, and the ordinary seasonal care any rose appreciates, and it is a straightforward rose to grow.
How and when should I prune Agnes?
Prune Agnes after the main flush and only lightly, since it flowers on wood formed the previous year — see our step-by-step guide to pruning roses for the full method.