Hybrid tea rose

90-098-1
90-098-2

Prof. Kownas

Hybrid tea rose

- – Stanisław Żyła

Uniform bright orange shade with a subtle golden tinge. - hybrid tea rose - mild, subtly scented rose - pleasant, floral character

– Vivid orange blooms with elegant, golden sheen.
– Reliable remontant flowering with rich second flush.
– Upright, dense growth ideal for borders and hedges.
– Glossy dark green foliage with good black spot resistance.
– Mild, pleasant floral fragrance for cut flowers.
Special feature: Very hardy to about –29 °C, suitable for colder climates.
Everyday elegance – Continuous garden development
Prof. Kownas
darinaROSE® ORIGINAL 2-litre own-root potted rose
21,10 £
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!
4.5 (6592)
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PROF. KOWNAS – orange hybrid tea rose – Żyła

With its glowing orange blooms and dignified history, PROF. KOWNAS brings a quietly romantic presence to small and medium family gardens, settling in reliably even where winds are brisk and soils are heavy, provided drainage is thoughtfully improved. This hybrid tea rose offers a graceful habit, dense, dark green foliage and season-long flowering, making it easy to build that storybook, cottage-garden ambience without demanding expert skills. As an own-root plant it is naturally long-lived, regenerating well from the base so your border keeps its shape and colour with only modest care. In its first seasons you will see strong root development, followed by confident new growth and, by the third year, the full romantic impact of abundant, glowing blooms for afternoon tea beneath an arbour.


Usage options

Target area Reasoning
Feature rose near a seating area Medium height and upright structure make PROF. KOWNAS ideal beside a bench or terrace, where its neat silhouette does not dominate but offers a steady succession of blooms. Mild fragrance and refined flowers give everyday elegance with minimal fuss for busy urban gardeners.
Cottage-style mixed border The dense, glossy foliage and generous repeat flowering thread warm orange tones through perennials and herbs, echoing classic cottage gardens. Own-root vigour supports a long-lived planting, with simple annual pruning maintaining a romantic outline for traditional-style homeowners.
Cutting patch for home bouquets Solitary, medium-sized hybrid tea blooms with firm stems are well suited to cutting for jugs and vases in the kitchen. Regular harvesting doubles as easy deadheading, encouraging fresh waves of flowers across the season for home floristry enthusiasts.
Front-of-border accent in family garden Its compact spread and upright habit allow planting near paths or lawns without overwhelming play space. Moderate maintenance needs and good black-spot resistance make routine care straightforward, even with limited time, suiting busy family gardeners.
Small rose bed in heavy or clay soil Well-structured, own-root plants anchor firmly once established and respond positively to planting in raised or improved beds where drainage is enhanced in wetter, heavier ground, a practical choice for UK clay-garden owners.
Part-shade side border Suitability for partial shade lets you position this rose where morning or late-afternoon sun filters through, keeping flowers rich in colour. This flexibility helps fill awkward side strips or corners that many sun-hungry roses resist, benefiting space-conscious gardeners.
Informal low hedge or row Suggested hedge spacing creates a gently interlocking line of dark foliage and warm blooms, ideal along paths or to edge a kitchen garden. Own-root construction helps plants recover well after winter shaping, offering enduring structure for long-term planners.
Large decorative container on patio When grown in a 40–50 litre container with careful watering, PROF. KOWNAS becomes a movable highlight for terraces, its remontant flowering carrying colour through summer while maintenance remains manageable for container-focused gardeners.

Styling ideas

  • Kitchen-border – Combine with spearmint and sweet alyssum by a back door for scented, useful planting and regular cut flowers – ideal for cooks who love cottage charm.
  • Sunset – Pair the warm orange blooms with soft apricot perennials and pale grasses for a glowing evening border – suited to those seeking a gentle, romantic palette.
  • Arbour – Plant a small group near an arbour entrance, underplanting with creeping phlox to soften the base – perfect for creating an afternoon tea nook.
  • Formal-row – Use close spacing in a straight line along a path to form a low, tidy hedge of glossy foliage and repeat flowers – for gardeners favouring ordered layouts.
  • Patio-centrepiece – Grow a single plant in a generous terracotta pot with trailing alyssum to frame a seating area – ideal for balcony or terrace owners wanting impact in limited space.

Technical cultivar profile
Parameter Data
Name and registration PROF. KOWNAS – orange hybrid tea rose, Żyła selection, hybrid tea rose group and commercial type, verified cultivar authenticity for darinaROSE ORIGINAL own-root 2-litre container production.
Origin and breeding Hybrid tea bred by Stanisław Żyła from (Crepe de Chine × Marina) × Rinacor; introduced 1996 after 1994 registration, parentage selected for refined blooms and consistent garden performance.
Growth and structural characteristics Upright habit, dense dark green glossy foliage, moderate prickles; height around 70–95 cm with a 40–55 cm spread, forming a compact yet substantial shrub suited to borders and feature plantings.
Flower morphology Medium, double, cup-shaped flowers opening flatter with 26–39 petals, mainly solitary on stems; remontant, delivering a reliable second flush of blooms under average garden care and deadheading.
Colour data and phenology Bright uniform orange with a subtle golden tinge; ARS OB, RHS 24A outer, 23B inner; buds deep orange, ageing through salmon-rose and pastel-gold tones with generally good colour retention in garden conditions.
Fragrance and aroma Mild, pleasant floral fragrance that complements, rather than dominates, seating areas; strongly double form limits pollen access, so pollinator attraction is modest compared with simpler, open-centred varieties.
Hip characteristics Hip set is usually sparse due to double flowers; occasional small spherical orange-red hips 12–17 mm may appear, adding discrete seasonal interest without dominating the plant’s ornamental display.
Resistance and winter hardiness Hardy to about -29 to -26 °C (RHS H7, Swedish zone 4, USDA 5a); disease resistance moderate overall, with good black-spot resistance and average tolerance to powdery mildew, rust, and summer heat.
Horticultural recommendations Best in well-drained, improved garden soil; average water needs with irrigation during prolonged drought; medium maintenance with occasional plant protection, suitable for borders, hedging, and cutting.

PROF. KOWNAS offers season-long orange blooms, compact structure and reliable hardiness in a durable own-root form that matures gracefully over years, making it a thoughtful choice for an easy-going, romantic garden.

Detailed product attributes

Product Identification Data

Product Name: PROF. KOWNAS – orange hybrid tea rose - Żyła
Product Type: darinaROSE® ORIGINAL - 2-litre own-root potted rose
Cultivar Authenticity: Verified:19.02.2025
Cultivar Quality Rating: premium bronze
Item Number: [1448] 90-098 (14.02.2026) darinarose.co.uk

Name and Registration

Meaning of Cultivar Name: The name was given in honour of Professor Stefan Kownas, a Polish botanist.
Original Trade Name: Prof. Kownas
Current Trade Name: Prof. Kownas Hybrid tea rose Żyła
Rose Group: Hybrid Tea
Commercial Type: hybrid tea rose
Commercial Group: Hybrid tea rose
Exhibition Category: cut flower; exhibition hybrid tea
Collection: Hybrid tea rose

Origin and Breeding

Breeder: Stanisław Żyła
Breeding Company / Institution: unknown / no data
Parentage: (Crepe de Chine × Marina) × Rinacor

Growth and Structural Characteristics

Height: 2.3-3.1ft (70-95 cm)
Spread: 1.3-1.8ft (40-55 cm)
Growth Habit: upright
Foliage: The variety has dense foliage. The leaves have a glossy surface and a dark green hue.
Prickliness: moderately thorny
Self-Cleaning Description: Spent blooms generally remain on the plant and require deadheading.
Self-Cleaning Intensity: Self-cleaning: weak

Flower Morphology

Petal Count: 26-39
Flower Fullness: double flowered
Flower Shape: cup-shaped, flat-opening
Flower Size: M (1,5-2,75 in)
Inflorescence Type: solitary
Colour Code: ARS code: OB RHS code: 24A (outer), 23B (inner)
Repeat Flowering: Remontant, with a generous second flush of blooms.

Colour Data and Phenology

Colour: orange
Flower Colour Description: Uniform bright orange shade with a subtle golden tinge.
Closed Bud: Deep, rich orange surface with a slight golden sheen at the tip.
Newly Opened Flower: The outer petals are bright orange, and the inner surfaces are softer with a golden-orange tone.
Full Bloom: The petals are a uniform orange with a golden sheen in the centre and a subtle salmon blush at the edges.
Before Fading: The orange slowly fades to a salmon-rose, pastel-gold shade.
Colour Fading Description: The vivid orange gradually fades to a salmon-pink, pastel-gold hue as the flower reaches the end of its bloom.

Fragrance and Aroma

Fragrance Strength: mild, subtly scented rose
Fragrance Character: pleasant, floral character
Pollinator Attraction: Its strongly double (fully filled) bloom form, which often conceals or restricts access to the stamens, makes it poorly attractive to pollinating insects.
Pollinator-Friendly Rating: Double-flowered variety, pollinator-friendly: limited, attracts few pollinators

Hip Characteristics

Hip Shape: spherical
Hip Colour: orange-red
Hip Comment: Hip formation is likely to be minimal due to the double flowers; occasionally a spherical, orange-red hip 12–17 mm in diameter forms.

Resistance and Hardiness

Hardiness (°C): -29–-26 °C
Heat and Drought Tolerance Description: Has average water needs in warm conditions; requires irrigation during prolonged drought.
Disease Resistance: moderate
  • powdery mildew – moderate
  • black spot – resistant
  • rust – moderate

Horticultural Recommendations

Recommended Planting Distance: for mass planting 30 cm, for hedging 25 cm, as a specimen plant 50 cm
Planting Density: square planting 10 plants/m², hexagonal arrangement 12 plants/m²
Partial Shade Tolerance: suitable for partial shade
Maintenance Requirement: Maintenance requirement medium; occasional plant-protection treatments required.
Primary Uses: border, cut flower, specimen plant

Comments

Strengths: Everyday elegance – Continuous garden development
Companion Plants: Phlox subulata - creeping phlox Mentha spicata - spearmint Alyssum maritimum - sweet alyssum
Comment: -
PROF. KOWNAS – orange hybrid tea rose - Żyła
Uniform bright orange shade with a subtle golden tinge. - hybrid tea rose - mild, subtly scented rose - pleasant, floral character
Online rose purchase - hybrid tea rose - Prof. Kownas - orange - (2.3-3.1ft (70-95 cm))
Inflorescence: solitary Height: 2.3-3.1ft (70-95 cm) Flower shape: cup-shaped, flat-opening Winter hardiness: 4b orange - - hybrid tea rose - Flower size: M (1,5-2,75 in) Flower size: M (1,5-2,75 in) - Height: 2.3-3.1ft (70-95 cm) Height: 2.3-3.1ft (70-95 cm) - Flower fullness: double flowered Prof. Kownas - Roses in the garden | darinaROSE® Original - premium bronze Stanisław Żyła

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


Which product type is right for you?


Information

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

Let us ask ourselves the question: What do I want to use the rose for?
Flower? - Location? - Cover? - Fragrance? - Height? - Breeder? - Rose hips?

Rose purchase 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.