Cornus

The genus Turf, or Dogwood (Cornus), includes about 40 species of deciduous herbaceous plants, shrubs and small trees. Most of these species were later assigned by botanists to other genera, for example, Swida, Chamaepericlymenum, Dendrobenthamia, Cynoxylon, Thelcrania, whose names are not widely used. Leaves, as a rule, are simple opposite whole-edged with lateral veins extending in arcs from the central one; in autumn, the foliage often acquires a bright color. The flowers are small with 4 petals and 4 stamens, star-shaped white, yellow or yellowish-green. They bloom in spring and summer on the shoots of the previous year in flattened or rounded apical inflorescences. The fruits are red berry-like drupes. Many species have bright bark, which creates color spots in the middle of winter. The most common species are: Canadian turf (Cornus canadensis), flowering turf (S. florida), Kousa turf (With kousa), common dogwood (S. mas), blood-red turf (S. sanguines), and shoot-bearing turf (With stolonifera). Tree-like derenes, such as C. kousa, are mostly grown for the beauty of the bright bracts that enclose the inflorescences. Male dogwood, or common dogwood (C. mas), is of interest to a greater extent due to its decorative foliage and edible berries, grows slowly, gives abundant root growth, blooms profusely, for a long time and is a good honeybee. Blood-red turf is used in hedges. Shrubby species are grown both for the beautiful autumn color of the leaves (large-leaved turf) and for the winter color of the bark (shoot-bearing turf). Herbaceous species are cultivated as groundcover (for example, Canadian turf).

The genus Turf, or Dogwood (Cornus), includes about 40 species of deciduous herbaceous plants, shrubs and small trees. Most of these species were later assigned by botanists to other genera, for example, Swida, Chamaepericlymenum, Dendrobenthamia, Cynoxylon, Thelcrania, whose names are not widely used. Leaves, as a rule, are simple opposite whole-edged with lateral veins extending in arcs from the central one; in autumn, the foliage often acquires a bright color. The flowers are small with 4 petals and 4 stamens, star-shaped white, yellow or yellowish-green. They bloom in spring and summer on the shoots of the previous year in flattened or rounded apical inflorescences. The fruits are red berry-like drupes. Many species have bright bark, which creates color spots in the middle of winter.

The most common species are: Canadian turf (Cornus canadensis), flowering turf (S. florida), Kousa turf (With kousa), common dogwood (S. mas), blood-red turf (S. sanguines), and shoot-bearing turf (With stolonifera). Tree-like derenes, such as C. kousa, are mostly grown for the beauty of the bright bracts that enclose the inflorescences.

Male dogwood, or common dogwood (C. mas), is of interest to a greater extent due to its decorative foliage and edible berries, grows slowly, gives abundant root growth, blooms profusely, for a long time and is a good honeybee. Blood-red turf is used in hedges.

Shrubby species are grown both for the beautiful autumn color of the leaves (large-leaved turf) and for the winter color of the bark (shoot-bearing turf).

Herbaceous species are cultivated as groundcover (for example, Canadian turf).

Cultivation

Derenes are almost exclusively grown outdoors, but potting is also possible. Plants are planted in a permanent place in autumn or spring, depending on the climate: where the ground remains frozen for a long time in spring, it is better in autumn. As a rule, any soil is suitable for them, preferably fertile, rich in organic matter. Only the Kousa turf (C. kousa) and flowering turf (C. florida) prefer slightly acidic soils. Plants in containers are transplanted in early spring only if they grow too much. Tree-like species, as a rule, do not need pruning, and shrubby ones are pruned in early spring, leaving 10-20 cm from the soil surface, which contributes to intensive cultivation. branching.

Derenes are almost exclusively grown outdoors, but potting is also possible.

Plants are planted in a permanent place in autumn or spring, depending on the climate: where the ground remains frozen for a long time in spring, it is better in autumn. As a rule, any soil is suitable for them, preferably fertile, rich in organic matter. Only the Kousa turf (C. kousa) and flowering turf (C. florida) prefer slightly acidic soils. Plants in containers are transplanted in early spring only if they grow too much. Tree-like species, as a rule, do not need pruning, and shrubby ones are pruned in early spring, leaving 10-20 cm from the soil surface, which contributes to intensive cultivation. branching.

Location

Derenam is suitable for both open sun and partial shade and shading.

Temperature

These are hardy plants that can withstand both high and low temperatures well. Derenes are frost-resistant.

Watering

It is only necessary for young plants immediately after transplanting.

Reproduction

In autumn or spring, when sowing seeds, cover with soil consisting of peat and sand in equal parts in a cool, illuminated place. After germination, when the seedlings can be picked up, they are transplanted one at a time into cups, and then - into larger containers before planting in a permanent place in 2 years. Cuttings are cut in the middle of summer (July-August). They should be semi-woody (a shoot of the current year with a part of the branch from which it grows), about 10 cm long. They are planted indoors in a mixture of peat and sand, taken equally. After rooting, the cuttings are transplanted one at a time into pots, in which they spend the winter in a lighted, unheated room. Then they are placed in larger containers for 2-3 years. Some species, such as white turf, can also be propagated by separating rooted shoots from the parent plant in November. Species with very long shoots can also be propagated by layering, digging them into the soil in September and separating them after 1-2 years (for example, white turf and shoot-bearing turf).

In autumn or spring, when sowing seeds, cover with soil consisting of peat and sand in equal parts in a cool, illuminated place. After germination, when the seedlings can be picked up, they are transplanted one at a time into cups, and then - into larger containers before planting in a permanent place in 2 years.

Cuttings are cut in the middle of summer (July-August). They should be semi-woody (a shoot of the current year with a part of the branch from which it grows), about 10 cm long. They are planted indoors in a mixture of peat and sand, taken equally. After rooting, the cuttings are transplanted one at a time into pots, in which they spend the winter in a lighted, unheated room.

Then they are placed in larger containers for 2-3 years. Some species, such as white turf, can also be propagated by separating rooted shoots from the parent plant in November. Species with very long shoots can also be propagated by layering, digging them into the soil in September and separating them after 1-2 years (for example, white turf and shoot-bearing turf).

Diseases

Turf cancer, caused by the fungus Phytophthora cactorum, first causes the formation of smaller leaves, which turn red ahead of time in the summer, after which the branches begin to dry up.

Acquisition

They buy species with bright bark (in winter they create color spots) and decorative ones (beautiful flowering in spring). The best time to buy is autumn or spring, when the plants can be immediately planted in a permanent place in the garden.