Park & shrub rose

90-168-1
90-168-2

Uncle Walter

Park - shrub rose

MACon – Samuel Darragh McGredy IV

Deep, clear scarlet-red shade with a delicate velvety sheen. - park rose - very weak, barely noticeable fragrance rose - neutral character

– Tall, vigorous shrub for impactful planting.
– Deep scarlet-red blooms with velvety sheen.
– Reliable repeat flowering through the season.
– Strong resistance to major rose diseases.
– Award-winning variety, proven garden performance.
Special feature: Forms bright red autumn hips for extra seasonal interest.
Harmonious environment – Eco-friendly garden layout
Uncle Walter
pharmaROSA® ORIGINAL 2-litre own-root potted rose
21,00 £
Unfortunately, we are currently unable to ship to the United Kingdom; we only deliver to countries within the European Union. For more information, please contact us!
3.5 (5534)
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UNCLE WALTER – scarlet-red park rose – McGredy

Scarlet arches of flower-laden stems make ‘Uncle Walter’ a striking choice for family gardens where you want dependable colour with minimal fuss. This vigorous shrub forms an upright, easily trained framework that can also serve as a low climber around porches or boundary fences, ideal where gardens face regular wind and rain in more exposed parts of the UK. Its large, double, high-centred blooms open in clustered flushes from early summer, then return reliably, giving a long season of classic park-rose display. Once planted in good soil and reasonably watered, this own-root rose settles in steadily, building a strong base that supports long-term flowering with only light annual pruning and deadheading. Over the first years it focuses on roots, then framework, before showing its full ornamental effect, so you can enjoy a rose that becomes more impressive, stable and balanced with time rather than needing constant attention. At typical front-garden spacings it creates a generous yet manageable presence, working equally well as a specimen or in small groups. Its dark, glossy foliage and bright red autumn hips enrich the border long after the main flower season, helping your planting feel complete without complicated schemes or intensive maintenance, and fitting comfortably into cottage-style mixes or simple, tidy layouts for busy beginners.



Usage options

Target areaReasoning
Front garden specimen shrub Used as a single statement shrub, its tall, upright habit and large scarlet blooms create strong kerbside impact without needing complex pruning, giving front gardens a classic, welcoming feel for the style-conscious homeowner
Small group planting in beds and borders Planting 3–5 together at recommended spacing forms a generous, cohesive mass of colour that repeats through summer, filling borders effectively so you can keep the rest of the scheme simple and still feel successful as a beginner
Low climber on arches, fences or railings The vigorous upright growth can be lightly tied onto supports to create a low climbing feature, ideal where space is limited and you want vertical interest with straightforward training suitable for the busy urban gardener
Mixed cottage-style border Its deep scarlet flowers and dark foliage pair well with soft grasses and perennials, giving that relaxed cottage look while the reliable shrub framework keeps the border orderly and manageable for the casual weekend gardener
Urban and streetside planting Robust structure, good disease resistance and a tidy outline make it suitable for front gardens facing pollution and passing traffic, offering dependable colour and form with only light seasonal care for the time-pressed city dweller
Family garden backdrop or informal hedge At full height it forms a leafy, flowered screen that softens boundaries around lawns or seating areas, while own-root growth gives long-term stability and recovery if stems are damaged in active family spaces with children or pets nearby
Large containers and courtyard planting In a 40–50 litre or larger container with regular watering, its strong, upright habit and repeat flowering offer a focal point on patios or balconies, giving a high-impact rose solution for compact spaces and novice planters
Colour focus in exposed or windy gardens Its vigorous framework and dense foliage help it cope with sites where wind and rain are frequent, giving a reliable red accent even in less sheltered plots, supporting those gardening in breezier locations along with the coastal owner

Styling ideas

  • COTTAGE MIX – combine with low yarrow and pale foxgloves to soften the strong red and create a relaxed, traditional cottage look – ideal for romantically inclined homeowners
  • STRUCTURED HEDGE – use in a loose row along a path or drive, underplanted with hardy groundcovers to keep weeds down – suited to those wanting order with minimal effort
  • MODERN CONTRAST – pair with blue sedges and dark pots or edging for a graphic red-and-slate palette – appealing to design-focused urban gardeners
  • ARCH FOCAL – train a few stems over a low arch or pergola entrance, letting perennials fill the base for a welcoming approach – good for families wanting a simple showpiece
  • PATIO STATEMENT – plant in a large 50-litre container with aromatic herbs around the rim for easy summer colour near seating – perfect for busy beginners

Technical cultivar profile
ParameterData
Name and registration Uncle Walter – shrub/park rose; registered and exhibited under the same name; ARS Approved Exhibition Name: Uncle Walter; group classification: park shrub rose, specimen shrub.
Origin and breeding Bred by Samuel Darragh McGredy IV, New Zealand, 1959; parentage ‘Detroiter’ × ‘Heidelberg’; introduced 1962 by Samuel McGredy & Son, Portadown, Northern Ireland.
Awards and recognition Nord-Rose Award in Scandinavia and Gold Medal in Copenhagen, reflecting strong performance and ornamental value in cooler northern European climates and public plantings.
Growth and structural characteristics Vigorous, upright shrub 240–340 cm high, 90–160 cm spread; dense, dark green, glossy foliage with a bronze tinge; moderately thorny; can be trained as a low climber or tall backdrop.
Flower morphology Large, double blooms (26–39 petals), high-centred, cut-rose style; clustered on the stems; remontant with a strong second flush; flower size typically 2.75–3.95 inches in diameter.
Colour data and phenology Deep scarlet-red, velvety sheen; ARS MR, RHS 53A outer, 53B inner; colour holds reasonably in sun, deepening to crimson before moderate fading; buds show darker scarlet with slight blackish shading.
Fragrance and aroma Fragrance very weak to neutral; primarily grown for colour and garden structure rather than scent; double flowers moderately attractive to pollinators due to reduced stamen accessibility.
Hip characteristics Moderate production of bright red, ovoid hips, around 9–15 mm; add seasonal interest in late summer and autumn, particularly effective as colour accents in mixed borders and informal hedges.
Resistance and winter hardiness Good overall disease resistance: resistant to powdery mildew and black spot, moderate against rust; hardy to around -15 to -12 °C (RHS H6), suitable for most UK regions with normal care.
Horticultural recommendations Best in sunny positions with well-prepared soil; avoid prolonged drought; low maintenance apart from deadheading and occasional rust checks; spacing 105–200 cm depending on hedge, mass or specimen use.

UNCLE WALTER offers vigorous height, long-season scarlet flowering and dependable disease resistance in a durable own-root form, making it a thoughtful choice if you would like a lasting structural rose for your garden.

Detailed product attributes

Product Identification Data

Product Name: UNCLE WALTER – scarlet-red park rose - McGredy
Product Type: pharmaROSA® ORIGINAL - 2-litre own-root potted rose
Cultivar Authenticity: Verified:24.03.2025
Cultivar Quality Rating: premium bronze
Item Number: [1518] 90-168 (14.02.2026) pharmarosa.co.uk

Name and Registration

Meaning of Cultivar Name: The name is a male given name.
Cultivar Synonym: Oncle Walter
Registered Cultivar Name: Uncle Walter
Original Trade Name: Uncle Walter
Current Trade Name: Uncle Walter Park - shrub rose Uncle Walter
Rose Group: Shrub
Commercial Type: park rose
Commercial Group: Park - shrub rose
Exhibition Category: specimen shrub
Collection: Park - shrub rose

Origin and Breeding

Initial Distributor: Samuel McGredy & Son, Nurserymen (Northern Ireland)
Breeder: Samuel Darragh McGredy IV
Breeding Company / Institution: Samuel McGredy & Son Nurserymen (Portadown)
Breeding Year: New Zealand, 1959
Parentage: ‘Detroiter’ × ‘Heidelberg’

Awards and Honours

Competition and Show Awards: Nord-Rose Award (Scandinavia); Copenhagen – Gold Medal

Growth and Structural Characteristics

Height: 7.9-11.2ft (240-340 cm)
Spread: 3-5.2ft (90-160 cm)
Growth Habit: upright (vigorous grower, can also be trained as a low climber)
Foliage: The variety has dense foliage; its leaves are glossy and dark green with a bronze tinge.
Prickliness: moderately thorny
Self-Cleaning Description: Most spent blooms remain on the plant and require subsequent cleaning.
Self-Cleaning Intensity: Self-cleaning: weak.

Flower Morphology

Petal Count: 26-39
Flower Fullness: double-flowered
Flower Shape: high-centred, pointed bud (cut-rose type)
Flower Size: L (2,75-3,95 in)
Inflorescence Type: clustered-flowered
Colour Code: ARS code: MR RHS code: 53A (outer), 53B (inner)
Repeat Flowering: Remontant; the second flowering is also abundant.

Colour Data and Phenology

Colour: scarlet-red
Flower Colour Description: Deep, clear scarlet-red shade with a delicate velvety sheen.
Closed Bud: Deep scarlet with slight blackish shading in places.
Newly Opened Flower: The outer petals are vivid scarlet, while the inner ones are a slightly lighter scarlet tone.
Full Bloom: The petals are uniformly rich scarlet with a velvety texture.
Before Fading: The scarlet red darkens slightly, then takes on a crimson hue.
Colour Fading Description: In strong sunlight it only fades moderately; in cool conditions it remains deep red.

Fragrance and Aroma

Fragrance Strength: very weak, barely noticeable fragrance rose
Fragrance Character: neutral character
Pollinator Attraction: Flowers moderately attract pollinators; the floral form (simple/semi-double/double) and the accessibility of the stamens influence this, with simple flowers that expose their stamens generally being more attractive than double forms where stamens are obsc
Pollinator-Friendly Rating: Its double flowers only moderately attract pollinators, so it is at best partially pollinator-friendly and primarily ornamental.

Hip Characteristics

Hip Shape: egg-shaped
Hip Colour: bright red
Hip Comment: Moderate hip formation, ovoid, bright red hips 9–15 mm in diameter.

Resistance and Hardiness

Hardiness (°C): -15–-12 °C
Heat and Drought Tolerance Description: Performs well in warm conditions; does not tolerate prolonged drought without irrigation.
Disease Resistance: resistant
  • powdery mildew – resistant
  • black spot – resistant
  • rust – moderate

Horticultural Recommendations

Recommended Planting Distance: for mass planting 120 cm, for hedging 105 cm, as a solitary specimen 200 cm
Planting Density: square planting 0,7 plants/m², hexagonal arrangement 0,8 plants/m²
Partial Shade Tolerance: Preferably in a sunny position
Maintenance Requirement: Maintenance requirement low; generally requires little intervention, but occasional protection against rust may be necessary.
Primary Uses: flower bed, cut flower, specimen plant, urban green space

Comments

Strengths: Harmonious environment – Eco-friendly garden layout
Companion Plants: Carex flacca 'Blue Zinger' - glaucous sedge
Phormium 'Tom Thumb' - New Zealand flax
Achillea millefolium (low varieties) - low-growing yarrow
Comment: -
UNCLE WALTER – scarlet-red park rose - McGredy
Deep, clear scarlet-red shade with a delicate velvety sheen. - park rose - very weak, barely noticeable fragrance rose - neutral character
The rose webshop. - scarlet-red - park rose - Uncle Walter - (7.9-11.2ft (240-340 cm))
Inflorescence: clustered-flowered Height: 7.9-11.2ft (240-340 cm) Flower shape: high-centred, pointed bud (cut-rose type) Winter hardiness: 6b scarlet-red - Samuel McGredy & Son, Nurserymen (Northern Ireland) park rose - Flower size: XL (3,5 in -) Flower size: XL (3,5 in -) - Height: 7.9-11.2ft (240-340 cm) Height: 7.9-11.2ft (240-340 cm) - Flower fullness: double-flowered Uncle Walter - Roses in the garden | pharmaROSA® Original - premium bronze Samuel Darragh McGredy IV

We showcase the external appearance of the roses available for online purchase from our webshop.


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Information

In what condition do we dispatch the rose from our online webshop?

Let us ask ourselves the question: What would I like to use the rose for?
Flower? – Location? – Screening? – Fragrance? – Height? – Breeder? – Rose hip?

Rose purchasing information
Methods of payment – Delivery charges – Delivery – Complaints handling

Care guide

Our product is a rose grown with pharmaROSA®’s unique cultivation technology!

2-litre, own-root, potted rose.
With a shoot system appropriate to the season.
With a root system that thoroughly permeates the growing medium.
Quality compliant with the requirements of the E.N.A. (European Nurserystock Association).
Supplied in unique packaging that prevents damage.
Can be planted during frost-free periods.
True-to-variety rose bush with a unique identifier.

The pharmaROSA® own-root potted rose is a well-rooted plant that supports reliable establishment when planted and cared for properly, so it can be planted whenever the soil is not frozen.


Crop overview: several varieties and growth stages in a short crop section.
Shoot system: intensive growth of fresh basal shoots on a young plant.
Root system: demonstration of a vigorous root system permeating the growing medium, by removing the pot.
Balance: mature plant with root system and shoots in harmony with each other.

Information about the videos
The video series is not a “seasonal showcase”; it illustrates the essence of pharmaROSA® own-root cultivation in a tangible way: how the plant is built up, what the root system is like and how the shoot system regenerates. The recordings were therefore made at different times and with plants at various stages of development, so mixed foliage levels and differing stages of growth may appear in the videos. They are not a ‘sample’ of the batch dispatched, but a visual explanation of how the technology works. The current condition of the rose available to order — typical for the given period and similar to what you can expect to receive in the parcel — is shown in the upper part of the product page.

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Product types

Pages for private customers
Garden roses for the family garden, with minimal care  → ORIGINAL®
Premium garden roses – instant impact, a truly showpiece garden  → EXTRA®
Pages for professionals and private customers
Roses for public spaces – large areas, sustainable maintenance  → NATURAL®
Roses for projects – hedge and row planting, fast implementation  → RAPID®
For professional partners only
Production – propagation material for garden roses, wholesale  → NEONATAL®

Company details

PharmaRosa Ltd.
Company registration number: 01-09-717479
VAT number: 13075314-2-43
Plant health registration no.: HU130721
Bank account (IBAN):
HU85117631891388688400000000
BIC (SWIFT): OTPVHUHB
Bank name: OTP Bank Nyrt.