Rose Agnes

‘Agnes’ is a charming and historically significant Hybrid Rugosa rose, expertly bred by Dr. William Saunders (Canada) around 1900. It belongs to the first known Canadian Hybrid Rugosa roses, officially introduced by Agriculture Canada (Ottawa) in 1922. This exceptional shrub rose is prized for its profuse early flowering, outstanding hardiness, and its rare and beautiful yellow coloration within the Rugosa group.

The plant produces abundant, old-fashioned, cup-shaped, double flowers in shades ranging from creamy yellow to honey-amber, depending on humidity and weather conditions. These luminous blooms, combined with the rose’s rugged constitution and minimal care requirements, make ‘Agnes’ both a rare and highly desirable addition to gardens in cold and temperate climates.

The buds are pointed, approximately 3 cm (1.2 inches) long. Flowers are very full, with 45–60 petals, cup-shaped, and average 7 - 8 cm (2.8 - 3.2 inches) in diameter. They are borne mostly singly or in small clusters. Petals are light yellow, with a richer amber-toned center; overall coloration ranges from soft yellow to warm honey-amber, gradually fading toward creamy, almost white tones as the flowers age. The fragrance is noticeable and fruity, variously described as soft raspberry-like or pleasantly lemon-scented.

Flowering is very early and abundant, beginning in late May to early June and lasting 15–20 days, sometimes up to a month. Individual flowers persist for 4 - 6 days, but they are produced in such numbers that the overall display is striking and long-lasting. Flowering is typically single-flush, though the variety often produces sporadic repeat blooms - mostly solitary flowers - throughout summer and autumn. The plant sets a few hips.

The foliage is typical of Rugosa roses: dark green, small to medium-sized, corrugated, semi-glossy, and leathery (wrinkled). The shrub has a vertical, open, bushy habit and forms a dense, tall, vigorous plant armed with numerous prickles. Mature plants reach 120 - 250 cm (4 - 8.2 ft) in height and up to 150 cm (4.9 ft) in width. Shoots are thin, arching, and heavily prickled, with finely thorny stems that make this rose particularly suitable for protective hedges or barrier plantings.

Pruning requirements are minimal. Only light sanitary pruning during dormancy is recommended, and in many cases no pruning is necessary at all. Heavy pruning should be avoided, as this variety does not always respond well to it.

Disease susceptibility is average. With preventative treatments, ‘Agnes’ remains generally healthy. According to various sources, it may be prone to rust or show resistance to it; however, it is resistant to powdery mildew and Coniothyrium (canker). Overall, the variety demonstrates high resistance to diseases, drought, wind, and rain, and requires very little care.

Winter hardiness is exceptionally high. Depending on classification, it is hardy to USDA zones 3a - 8b or USDA zone 4, tolerating temperatures down to approximately −27 °C. It overwinters without protection throughout Ukraine, making it an excellent choice for northern regions and cold climates.

Garden Use

‘Agnes’ is recommended for group plantings, hedges, and decorative park landscapes. It is equally suitable for flower beds, borders, or as a solitary specimen on a lawn. Thanks to its durability and adaptability, it performs well in a wide range of garden conditions.

The plant grows successfully in full sun and partial shade, tolerates poorer soils, and remains reliable even in shaded or less favorable locations. Its vigorous growth and spreading habit also make it suitable for mixed borders, shady garden areas, and robust landscape plantings. Despite its size, it can be used in large containers when sufficient space is provided.

‘Agnes’ is one of the very few yellow-flowered Rugosa hybrids, which makes it a true rarity among Rugosa roses. Its captivating fruity fragrance, exquisite old-fashioned blooms, and extraordinary hardiness make it an ideal choice for gardeners seeking a rose that combines classic beauty, resilience, and minimal maintenance.

Unfortunately we do not have information about the origin of the name of this rose.

In 2001, ‘Agnes’ received the Award of Garden Merit in the UK.

Rosa rugosa × Persian Yellow

(Rosa rugosa Thunb. × Rosa foetida f. persiana hort. ex Rehder)

One of the first known Canadian hybrid roses.

USDA 4