Description of the best varieties of grandiflora roses, cultivation technology

The first hybrid of the grandiflora rose was developed more than 60 years ago by the American W. E. Lammertz. Queen Elizabeth owes its decorative properties, immunity, and winter hardiness to the hybrid tea variety Charlotte Armstrong and the floribunda rose Floradora.

Description and characteristics of roses of the grandiflora group

The grandiflora group includes varieties of garden roses that bloom profusely and continuously throughout the summer. The first buds open in the first half of June, the last ones in autumn. The flowers are semi-double, double, large. Diameter 10-15 cm.

Old varieties of roses have almost no scent, while recently bred varieties have a delicate, pleasant aroma. The bushes are compact or semi-spreading, the shoots are powerful and erect. 1 or 3-5 flowers are formed on the stem. Rose grandiflora can be grown in regions 6 and 7 of winter hardiness zone.

Advantages and disadvantages

Hybrids have many advantages. They bloom long and profusely. They rarely get sick. All varieties are suitable for cutting. Bushes are decorative and are widely used in landscape design. There are some minor downsides. Bushes that are covered early and incorrectly for the winter become damp. The decorative quality of flowers suffers from rain.

Popular representatives

All the roses described below can be seen in the Nikitsky Botanical Garden. It was founded by H. H. Steven in 1824. It was engaged in the selection of garden roses, grandiflora, including N. D. Kostetsky, mother and daughter Klimenko, K. I. Zykov.

Samourai (Samurai)

An old variety (1966), French, with bright red, large cupped roses. Buds of 17-25 petals bloom on compact bushes covered with dark green, slightly glossy, ovate-shaped leaves. Rose Samurai was repeatedly exhibited at international exhibitions, where she was awarded honorary awards.

Tender Caramel

The flowers are large, 13 cm in diameter, double, consisting of 100-120 petals.The buds have a delicate, sweet aroma and a delicate apricot color. The variety is grown for cutting. A bouquet of roses costs at least 2 weeks.

Elle (Elle)

Unlike older varieties, which have almost no scent, El roses have an exquisite aroma. It is new, but has already received international awards. Lovely peach-colored roses were highly appreciated by flower growers in Switzerland (1999) and America (2005).

Louis de Funes

The flowers are orange, shaped like a hybrid tea rose. Only one bud opens on the stem. The color of the petals is original, dark, almost orange at the edges, pale yellow at the base. Under the influence of the sun, the pigment changes tone. The edges become crimson and the middle part is red.

White pearls

During the summer, 3-5 snow-white, semi-double flowers with a diameter of 10 cm bloom on each stem. The variety is resistant to diseases: powdery mildew, black spot. Rain does not affect the decorative properties. Winter hardiness at the level of USDA zone 6. The variety appeared in 1965, its creators were Z. K. Klimenko, V. N. Klimenko.

Valentina Tereshkova

Z. K. Klimenko is the author of an elegant, stylish rose. Flower growers learned about the existence of the variety in 2008. It is named after the first female astronaut. Characteristics of densely double flowers:

• bicolor, cherry red inside, cream outside;
• petals in bud 105;
• diameter 7-9 cm.

Winter hardiness from -18 to -23 °C.

Gurzuf

The variety can be grown in regions belonging to the 6th winter hardiness zone. It has powerful bushes about 1 m high, covered with shiny, dark green leaves. Double flowers - 40 petals in a basket, large (12 cm), bicolor, pink and cream.

Komsomolsky Ogonyok

The bushes are not compact, dense, 0.8-0.9 m high. Winter hardiness of the variety is from -18 to -23 °C. From 1 to 3 flowers open on the stem. They are large, semi-double, bright scarlet in color. The diameter of the baskets is 12 cm. They contain 15-20 petals.

Coral Surprise

The bushes are semi-spreading, of medium height (0.6-0.8 m), with a diameter of 0.6 m. The color of the buds is coral, diameter 12 cm. The baskets are semi-double, cup-shaped, consisting of 20-25 petals. Winter hardiness zone 6.

Major Gagarin

The old domestic variety (author V.N. Klimenko) has been grown by flower growers since 1956. The bushes are tall (0.9-1 m), bloom profusely for 3 months. Already in the first ten days of June, fragrant buds of soft pink color, consisting of 60 petals, form on the stems. During the season, more than 100 roses open on one plant.

Marina Steven

The variety is grown in the 6th winter hardiness zone. The shape of the buds is like that of a hybrid tea rose. On the stem, 1 bud opens with petals of soft pink and cream color. The variety was recently released, in 2006. Author - Z. K. Klimenko.

Feodosia Beauty

An old domestic variety, bred in Crimea (1964). Peony roses shape, double buds of 30-34 petals with a diameter of 14 cm. The bushes are tall (1 m), bloom profusely. The second wave of flowering continues until the end of autumn.

Subtleties of cultivation

For planting, nurseries and gardening stores purchase healthy seedlings in containers or with an open root system. Dried roots are reanimated - the seedlings are placed in a bucket of water overnight.

Before planting, they are dipped in a mixture of clay, water, and mullein.

Growing space

Only sunny places protected from the wind are suitable. The structure of the soil is not important. The pH level is neutral or slightly acidic.

Landing dates and rules

Grandiflora rose seedlings are planted in the garden in the spring, when the soil warms up to 8-10 °C, or in September-October. They dig medium-sized holes - 0.4 * 0.4 m. When planting several plants, place them at a distance of 0.5-1 m.

First, drainage (crushed stone, expanded clay) is poured into the hole, then half of the fertile soil. The roots are straightened, directed downwards, covered with soil and compacted. The root collar is buried. The hole is watered and mulched. In spring, shoots are cut to 3-4 buds; in autumn, this is not done. The sections are coated with varnish.

Recommendations for caring for roses

Maintenance is not difficult. Properly planted bushes grow in one place for decades. For abundant flowering, roses are fed and bushes are formed.

Watering and fertilizers

The culture loves moisture, especially during flowering. In summer, 1 bucket of water is poured under an adult bush once every 7 days. The next day, the soil around the roses is loosened. Fertilize several times during the spring-summer-autumn season.

Grandiflora pruning

In autumn, green shoots and dry branches are cut out at ground level. In summer, the bush is formed, giving it shape. The branches are cut to the outer bud, 5 cm away from it.

To stimulate the formation of new buds, remove dried flowers.

Preparing for winter

At the beginning of October, the buds are trimmed and the leaves are removed. The bushes are hilled, mulched, bent to the ground, and secured with pins. When sub-zero temperatures are established, a shelter is constructed from covering material folded in several layers. The frame is made of arcs, panels, boxes.

Protecting plants from pests and diseases

To prevent powdery mildew, the above-ground part is sprayed with a solution of Fundazol. To prevent fungus, rose grandiflora is treated with Fitosporin-M.

When black-brown spots (black spot) appear on the leaves, use the drug “Profit”. Bushes are protected from insects by Fufanon.

Reproduction methods

Grandiflora is propagated vegetatively. Most often, gardeners root cuttings taken from healthy, mature bushes. For cutting, choose strong stems on which all the buds have faded. The shoot is cut straight from above and at the bottom at an angle of 45°. 2 internodes are left on it.

Cuttings are rooted in mini-greenhouses. The following mixture is used as soil:

• turf land;
• peat;
• sand.

Old bushes are propagated by dividing the rhizomes. They are dug up. The root is cut into 2 parts. The resulting seedlings are planted in a permanent place.

Use in landscape design

In group plantings, the varieties Valentina Tereshkova and Gurzuf are used. Bushes covered with double flowers are combined with clematis, delphinium, lupine, sage, lavender, and geranium. Plants with blue and purple inflorescences best set off the grandiflora rose.

The Grandiflora variety Major Gagarin is grown for cutting. Medium-sized hybrid bushes serve as decoration for the rose garden. They are grown for decorative purposes for landscaping streets and local areas. Tall varieties are planted in the background of flower beds. Bushes are used to form hedges.