Hybrid tea rose «Primadonna»

Synonyms: Lexannod

Роза чайно-гибридная «Примадонна» (Rose Prima Donna) ( ) - a hybrid tea rose cultivar. The variety was obtained by the Dutch company Lex Voorn in 2003.

It is a tall upright shrub 100-150 cm high, up to 80 cm wide. Leaves are green, matte, dense.

Buds are conical with a high center, cream-colored with an apricot tint, borne on long stems. Flowers 12-13 cm in diameter, with a light, barely noticeable fragrance. Petals double, with a ruffled edge. Flowering is long and abundant. Keeps well as a cut flower.

Hardiness zone: 7b (-12°C)

Location: preferably choose a sunny, bright site protected from strong cold winds.

Soil: the most suitable soils for roses are heavy loamy soils rich in humus, air-permeable, moisture-retentive, slightly acidic (pH 5.8-6.5). Soil for them is prepared in autumn or at least one month before spring planting. It is very important to work the soil to a depth of 50-60 cm. Per 1 m2 of worked layer, add 10-20 g of manure, humus or peat-compost, 300-400 g of lime, 400-500 g of bone meal, 40-50 g of superphosphate, 150-200 g of wood ash. The soil is dug and mixed with the fertilizers, with organic matter in the soil mix should not exceed 50%. Exact fertilizer rates are calculated based on soil analysis. Optimal content of main nutrients for roses should be maintained in the following proportions, mg per 100 g of soil: nitrogen - 10-20 (NH4NO3), phosphorus (P2O5) - 60-80, potassium (K2) - 80-100, calcium (CaO) - 720.

Planting: it is recommended to carry out planting in the first half of the day. In temperate regions, roses are best planted in spring - late April to early May; in the south - in autumn. Before planting, remove all damaged and diseased shoots and roots from the seedling. Strong shoots are cut short to 10-15 cm, leaving only 2-4 buds on them. Roots are trimmed slightly to live tissue. If the roses were dried, they should be placed in water for one day before planting, and immediately before planting dip the roots in a manure-clay slurry. Planting holes are prepared 50x50 cm and filled with a nutrient mixture: 1 part turf-clay or garden soil, 1 part humus or compost - so that a mound is formed. Place the seedling on the mound, spread the roots and cover with soil, tamping it well so there are no air pockets between roots and soil, and water abundantly. The graft union is buried 3-5 cm below the soil surface. After watering, mound the roses. Protect shoots from drying. After shoots appear, rake the soil and mulch with humus or peat 5-8 cm thick to help retain moisture. Spacing in the row between hybrid tea, floribunda and polyantha roses is 25-30 cm, between rows 60-70 cm; park and climber roses 45-50 and 80-100 cm respectively; miniatures - 15-20 and 40-50 cm. When planting standard roses, their grafted part is often packed with moss and wrapped in paper to prevent drying, and these coverings are removed only after 1-1.5 weeks when buds begin to grow. After planting, mulch the soil with peat or soil 3-5 cm thick. When planting non-remontant park roses, mulch the soil with pine bark or wood chips.

Care: requires regular pruning of shoots affected by pests and diseases, as well as removal of dry leaves. Watering is recommended during dry periods.

Pruning: carried out in spring, summer and autumn. Spring pruning is the main pruning; at this time the bush is shaped. It begins immediately after the final awakening of the plants after winter or at spring planting. The top part of shoots is cut regardless of variety; strong shoots are shortened to 10-15 cm, leaving 2-3 well-formed buds on them; weak shoots - 1-2 buds. For autumn planting pruning is done in spring immediately after removing covers. For abundant flowering it is recommended to remove old flowers.

Propagation: mainly by grafting and cuttings. Cuttings are prepared during the budding period or immediately after the first flowering. Shoots are cut from the bush and cuttings 5-8 cm long with 2-3 leaves are immediately taken from the central part. The lower cut is made obliquely right below the bud, and the upper cut 1 cm above the bud. To reduce evaporation, remove the lower leaf and part of the upper one. Leaves should be handled carefully; they should not be removed completely, as cuttings do not root without them. Before planting, cuttings are placed for 18-20 hours in a root formation stimulant, immersing the ends 1-1.5 cm. This can be a 0.01% solution of heteroauxin. You can also use Kornevin, sodium humate (1 tablet per 1 l of water), aloe (10 drops per glass of water) or honey (1 teaspoon per glass of water). Then rinse cuttings with clean water and plant. Cuttings are planted in a box or in a bed. The bed should be located where it receives sun in the morning or evening, with shade at midday. Common substrates are coarse river sand, a mixture of vermiculite with sand, or sand with peat (1:1). Such substrate 3-4 cm thick is placed over turf-humus soil (8-10 cm). Cuttings are planted at an angle, deepening them 1.5-2 cm. Then cover in the bed with glass jars or in the box with film. After planting, moisten the cuttings several times a day, preferably with a spray, maintaining humidity at 80-90%. Fallen leaves are removed. After 2-3 weeks a callus appears on the cuttings, and roots form in about a month. Remove the jars or film, and grow the cuttings on, fertilizing every 2 weeks with a solution of ammonium nitrate or urea (15-20 g per bucket of water).

Diseases: disease resistance is high.

Pests: aphids, scale insects, leafroller, rose sawfly, thrips, rose cicadas, geometer caterpillars, резанные орехотворки, spider mites, nematodes. It is recommended to regularly spray hybrid tea roses with specialized pesticides to protect against pests.

Use: ideal for cutting, effective in single and group plantings, in compositions.