Philadelphus

The genus garden jasmine Philadelphus, unites about 70 species of flowering deciduous shrubs. The opposite leaves are oval, whole with pronounced veins; the edge is sometimes toothed. Single or collected in terminal racemes, the flowers bloom in May-June; they are white or cream-colored (occasionally with a purple flower base), cup-shaped, with many stamens in the center of the flower. Stamens are reborn and double flowers are obtained. As a rule, they have a pleasant strong aroma. Philadelphus coronarius is a dense shrub with fragrant flowers collected in clusters of 5-7. In the 'Golden' variety, the young leaves are golden-yellow in color, and in summer they turn yellow-green. Elliptical pointed leaves of odorless chub (P. inodorus) are dark green in color. In May-June, single or collected 3 white flowers bloom. Lemoine's forelock (P. x lemoinei) is a hybrid of common forelock (P. coronarius) and small-leaved forelock (P. microphyllus). The leaves are oval pointed and slightly pubescent. Apical brushes consist of 3-7 very fragrant flowers. Small-leaved Philadelphus (P. microphyllus) is a compact shrub with small oval pointed leaves and fragrant flowers that bloom singly or in groups of 2-3. Pubescens is a decorative species with oval leaves pubescent on the underside. White-cream racemes of flowers bloom from May to June. The variety 'Virginia' is characterized by double white flowers with a special aroma. This is the most famous hybrid. 'Beauclerk' with milky-white flowers with brown-red spots is also popular; 'Beautiful star' with very fragrant white flowers with purple spots at the base; 'Burfodiensis' with simple white flowers and numerous yellow stamens; 'Minnesota snowflake' with white double very fragrant flowers.

The genus garden jasmine Philadelphus, unites about 70 species of flowering deciduous shrubs. The opposite leaves are oval, whole with pronounced veins; the edge is sometimes toothed. Single or collected in terminal racemes, the flowers bloom in May-June; they are white or cream-colored (occasionally with a purple flower base), cup-shaped, with many stamens in the center of the flower. Stamens are reborn and double flowers are obtained. As a rule, they have a pleasant strong aroma.

Philadelphus coronarius is a dense shrub with fragrant flowers collected in clusters of 5-7. In the 'Golden' variety, the young leaves are golden-yellow in color, and in summer they turn yellow-green.

Elliptical pointed leaves of odorless chub (P. inodorus) are dark green in color. In May-June, single or collected 3 white flowers bloom.

Lemoine's forelock (P. x lemoinei) is a hybrid of common forelock (P. coronarius) and small-leaved forelock (P. microphyllus). The leaves are oval pointed and slightly pubescent. Apical brushes consist of 3-7 very fragrant flowers.

Small-leaved Philadelphus (P. microphyllus) is a compact shrub with small oval pointed leaves and fragrant flowers that bloom singly or in groups of 2-3.

Pubescens is a decorative species with oval leaves pubescent on the underside. White-cream racemes of flowers bloom from May to June. The variety 'Virginia' is characterized by double white flowers with a special aroma. This is the most famous hybrid. 'Beauclerk' with milky-white flowers with brown-red spots is also popular; 'Beautiful star' with very fragrant white flowers with purple spots at the base; 'Burfodiensis' with simple white flowers and numerous yellow stamens; 'Minnesota snowflake' with white double very fragrant flowers.

Cultivation

The main attraction of Philadelphus is a beautiful spring flowering. It is grown in parks and gardens: both in single plantings and in groups. Its positive properties include the ability to easily adapt to environmental conditions, resistance to its pollution, as well as pest damage. In the middle zone, planting - both species and hybrids - is carried out in October, and in mild climates-in March. Any well-drained garden soil is suitable.

Location

Philadelphus can be planted in the open sun or in partial shade.

Temperature

These are relatively unpretentious plants that can withstand a drop in temperature to -20 °C.

Watering

It is necessary only for young plants immediately after planting in a permanent place in the garden.

Care

When the flowering period ends, old lignified branches are removed, young ones should not be touched – this will interfere with future flowering.

Reproduction

Most often, Philadelphus is propagated by cuttings. In July-August, cuttings 10 cm long are taken from young branches, planted in sand with peat and kept in a cool, illuminated place in conditions of high humidity. After the appearance of the roots, the shoots are planted singly. A permanent position is determined in October of the following year. In addition, Philadelphus can be propagated by air layers. Seeds are rarely used, because when sowing varieties lose most of the qualities of the original plant.

Diseases

Philadelphus is affected by aphids: both black and green apple, which causes serious damage - insects suck the juice out of the plants. This pest is eliminated with the help of special insecticides. Very dangerous are golden bronze beetles, which damage the flowers. In case of damage, the plants are treated with insecticides-baits. The causative agent of oidium (powdery mildew of grapes) Phyllactinia guttata forms a whitish coating on the leaves in the form of powder. In this situation, sulfur and other fungicides are used against oidium. Necrotic spots on the leaves occur due to fungi-pathogens of Ascochita philadelphi and the genus Gloeosporium. In this case, they are treated with antifungal drugs.

Philadelphus is affected by aphids: both black and green apple, which causes serious damage - insects suck the juice out of the plants. This pest is eliminated with the help of special insecticides.

Very dangerous are golden bronze beetles, which damage the flowers. In case of damage, the plants are treated with insecticides-baits. The causative agent of oidium (powdery mildew of grapes) Phyllactinia guttata forms a whitish coating on the leaves in the form of powder. In this situation, sulfur and other fungicides are used against oidium. Necrotic spots on the leaves occur due to fungi-pathogens of Ascochita philadelphi and the genus Gloeosporium. In this case, they are treated with antifungal drugs.

Acquisition

Philadelphus is quite easy to find in gardening centers and specialized nurseries. The best time to buy is autumn or spring, when it can immediately be planted in a permanent place.