Tea-hybrid rose 'Vivaldi'

Synonyms: RUIdriko

Tea-hybrid rose «Vivaldi» (Rose Vivaldi) - a tea-hybrid rose cultivar. The cultivar was developed by the company De Ruiter Innovations BV in 1989. Introduced in the Netherlands by De Ruiter's Nieuwe Rozen B.V. in 1989.

It forms a medium-sized upright bush 80-110 cm in height, up to 80 cm in width. Leaves are dark green, matte and dense.

Buds are ovoid, cream-colored, borne on long flower stems. Flowers are light pink, pearlescent with a darker center, cup-shaped or shallow-cup-shaped, 11-13 cm in diameter, with a light, barely noticeable fragrance. 28-35 petals. Flowering is long-lasting and abundant.

Hardiness zone: 7b (-12°C)

Location: choose a preferably sunny, bright site protected from strong and 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). Prepare the soil 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 treated 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. Dig the soil, mixing with fertilizers, with organic matter in the soil mix not exceeding 50%. Calculate exact fertilizer rates based on soil analysis. Maintain optimal contents of the main nutrients for the rose in the following amounts, mg per 100 g of soil: nitrogen - 10-20 (NH4NO3), phosphorus (P2O5) - 60-80, potassium (K2) - 80-100, calcium (CaO) - 720.

Planting: recommended to perform 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. Cut roots slightly back to live tissue. If the roses were dried, soak them in water for one day before planting, and immediately before planting dip the roots in a manure-clay slurry. Prepare planting holes 50x50 cm and fill with a nutrient mix: 1 part turf-loam or garden soil, 1 part humus or compost - forming a mound. Place the seedling on the mound, spread the roots and cover with soil, tamping thoroughly to eliminate air pockets, and water abundantly. Bury the graft union 3-5 cm below the soil surface. After watering, hill the roses. Protect shoots from drying out. After shoots appear, loosen the soil and mulch with humus or peat 5-8 cm thick to help retain moisture. Spacing in the row between tea-hybrid, floribunda and polyantha rose seedlings 25-30 cm, between rows 60-70 cm; for park and climbing roses respectively 45-50 and 80-100 cm; miniature roses - 15-20 and 40-50 cm. When planting standard roses, to prevent drying, their grafted part is often packed with moss and wrapped in paper, removed only after 1-1.5 weeks when buds begin to grow. After planting mulch the soil with peat or earth 3-5 cm thick. When planting non-remontant park roses, mulch with pine bark or wood chips.

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

Pruning: performed in spring, summer and autumn. Spring pruning is the main pruning and is when the bush is formed. It starts immediately after the plants have fully opened after wintering or with spring planting. Cut the tops of shoots regardless of cultivar; strong shoots are shortened to 10-15 cm, leaving 2-3 well formed buds, weak ones 1-2. For autumn plantings pruning is done in spring immediately after removing covers. To promote abundant flowering, remove old blooms.

Propagation: mainly by grafting and cuttings. Cuttings are prepared during budding or immediately after the first flowering. Shoots are cut from the bush and cuttings 5-8 cm long with 2-3 leaves are taken from the central part. Make the lower cut just below a bud at an angle, and the upper cut 1 cm above the bud. To reduce evaporation, remove the lower leaf and part of the upper leaf. Handle the leaves carefully; do not remove them completely, as cuttings will not root without them. Before planting, place the cuttings in a rooting stimulator for 18-20 hours, 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 tsp per glass of water). Then rinse the cuttings with clean water and plant them. Plant cuttings into a box or bed. The bed should be located where it receives morning or evening sun, with shade during midday. Substrate usually used is 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). Plant cuttings at an angle, embedding them 1.5-2 cm deep. Then cover the bed with glass or plastic jars, and cover the box with film. After planting, moisten the cuttings several times a day, preferably with a sprayer, maintaining humidity at 80-90%. Remove fallen leaves. After 2-3 weeks a callus appears on the cuttings, and roots form after a month. Remove jars or film, and grow on the cuttings, feeding every 2 weeks with a solution of ammonium nitrate or urea (15-20 g per bucket of water).

Diseases: may be affected by powdery mildew or black spot.

Pests: aphids, scale insects, leafrollers, rose sawfly, thrips, rose leafhoppers, geometrid caterpillars (inchworms), leaf-cutting weevils, spider mites, nematodes. It is recommended to spray tea-hybrid roses regularly with special products for pest protection.

Use: ideal for cutting; striking in solitary and group plantings.