Hybrid tea rose 'Belle Perle'

Hybrid tea rose «Belle Perle» (Rose Belle Perle) is a hybrid tea rose cultivar. The cultivar was obtained in 1997 by Guy Delbard in France by crossing Anna x Harmonie.

It forms a tall, dense and compact bush 100-120 cm in height and up to 70 cm in width. Leaves are dark green. Blooms with single flowers, less often 2-3 on one flowering stem. Shoots are covered with thorns.

Buds are goblet-shaped and open slowly. Flowers are double, bicolored, creamy with pink washings, reaching 10-13 cm in diameter. Fragrance pleasant, mild. The cultivar is repeat-flowering. Blooms abundantly throughout the summer.

Hardiness zone: 6b (-14°C)

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

Soil: the most suitable for roses are heavy loamy soils rich in humus, well aerated, 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 cultivate the soil to a depth of 50-60 cm. Per 1 m2 of the 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. Turn the soil, mixing with the fertilizers, with organic matter in the soil mixture not exceeding 50%. Calculate exact fertilizer rates based on soil analysis. The optimal content of the main nutrients for the rose 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: recommended to perform in the first half of the day. In the temperate zone it is best to plant roses in spring - in late April - 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. Trim roots lightly - to live tissue. If the roses were dried, place them in water for one day before planting, and immediately before planting dip the roots into a manure-clay slurry. Prepare planting holes sized 50x50 cm and fill 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 thoroughly so that there are no voids between the roots and the soil, and water abundantly. Bury the graft union 3-5 cm below soil level. After watering, hill up the roses. Protect shoots from drying out. After shoots appear, rake the soil and mulch with humus or peat in a 5-8 cm layer to help retain moisture. Spacing in the row between hybrid tea, floribunda and polyantha seedlings 25-30 cm, between rows 60-70 cm; for park and climbing roses respectively 45-50 and 80-100 cm; miniatures - 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, and all this is removed only after 1-1.5 weeks when the buds begin to grow. After planting mulch the soil with peat or earth in a 3-5 cm layer. 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 dead leaves. Watering is recommended during dry periods.

Pruning: carried out in spring, summer and autumn. Spring pruning is the main pruning, during which the bush is formed. It begins immediately after the plants have fully broken dormancy after winter or when planted in spring. The upper part of the shoots is cut regardless of variety; strong shoots are shortened to 10-15 cm, leaving 2-3 well-formed buds, on weak ones - 1-2. For autumn plantings pruning is done in spring immediately after removing the cover. For abundant flowering it is recommended to remove old flowers.

Propagation: mainly propagated by grafting and cuttings. Cuttings are harvested during bud formation or immediately after the first flowering. Shoots are cut from the bush and cuttings 5-8 cm long with 2-3 leaves are immediately prepared from the central part. Make the lower cut just below the bud at an angle, and the upper cut 1 cm above the bud. To reduce transpiration, remove the lower leaf and part of the upper one. Treat leaves carefully; do not remove them completely, as cuttings will not root without them. Before planting, place cuttings for 18-20 hours in a rooting stimulant, immersing the ends 1-1.5 cm. This can be a 0.01% heteroauxin solution. 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. Plant cuttings in a box or on a bed. The bed should be located where it receives morning or evening sun, and shade during midday sun. As a substrate usually use coarse river sand, a mixture of vermiculite with sand, or sand with peat (1:1). Such a substrate is poured in a 3-4 cm layer over turf-humus soil (8-10 cm). Plant cuttings at an angle, burying them 1.5-2 cm. Then cover them on the bed with glass or plastic jars, and the box with film. After planting, moisten 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 in about a month. Remove jars or film, and grow on the cuttings, fertilizing every 2 weeks with a solution of ammonium nitrate or urea (15-20 g per bucket of water).

Diseases: resistance to diseases is high.

Pests: aphids, scale insects, leafrollers, rose sawfly, thrips, rose cicadas, geometer caterpillars, "резанные орехотворки" (term in original), spider mites, nematodes. It is recommended to regularly spray hybrid tea roses with specific products for pest protection.

Uses: ideal for cutting; looks good in single and group plantings.