HOW TO GROW AND CARE FOR OUR PLANTS
The Campsis adorn and fill our gardens with their rich foliage and beautiful flowers that bloom continuously throughout the summer.
Species: see the paragraph on "Main species"
The genre Campsis of the family of Bignoniaceae it includes several shrubby and deciduous climber species.
They are characterized by the presence of adventitious roots emitted along the stem thanks to which the plant anchors itself to the supports it encounters (walls, walls, pergolas, racks, etc.). The leaves are mostly imparipinnate and of a beautiful intense green color. The flowers, gathered in terminal inflorescences, form at the ends of the branches of the year.
They are very conspicuous and formed by an elongated bell-shaped corolla (resembles a trumpet) formed by five-petals of variable color, depending on the species and the variety from red, to yellow, to orange. The fruits are cylindrical capsules that contain numerous seeds. plates, provided with two wings thanks to which dispersion occurs through the wind.
There are only two species in the genus Campsis:
There Campsis radicans (synonymsBignonia radicans, Tecoma radicans) is a climbing species, native to North America and becomes important in size thanks to its stems that reach 20 m in length: for this reason it is a plant that must be grown in the open ground.
It is a hardy species, fast growing and resistant to cold, very ground cover thanks to the richness of its adventitious roots which allow it to anchor firmly to walls and trellises.
It blooms in late summer (July) and throughout the summer (until September), producing numerous orange-red flowers.
Of this species there are numerous varieties that differ from each other for the color of the flowers.
It is commonly known by the name of Virginia jasmine.
The speciesCampsis grandiflora (synonyms Bignonia grandiflora, Campsischinensis, Tecoma grandiflora) native to Japan and China is a fairly delicate plant that does not tolerate low winter temperatures very well and is not particularly rustic. It has a development that can become impressive if it exceeds 20 m in length.
It has spectacular and very abundant blooms. It blooms in early summer (June) and throughout the summer (September). All summer (September).
There are numerous varieties that produce flowers that are now bright red, now orange red or salmon red.
The plant is also commonly called Chinese trumpet.
The hybrid is very famous and widespread Campsis × tagliabuanaknown in France as madame Galen(commonly called climbing trumpet), a hybrid of the mid-1800s created by crossing Campsis radicans and Campsis grandiflor which produces large trumpet-shaped flowers, ranging in color from orange yellow to salmon red, about 8 cm long and 5-7 cm wide. great diffusion of this hybrid is due to the fact that it combines better characteristics of the two species: the spectacular flowering of Campsisgrandiflora and the hardiness, resistance to low temperatures and greater adaptability of Campsis radicans.
It is a hybrid that does not know half measures in the sense that it grows strong and robust so much so that if you do it to develop anchored to a pergola make sure that it is very robust as in a short time the plant will have a considerable weight.
The hybrid was originally called Tecoma tagliabuana dedicated by Roberto de Visiani to the brothers Alberto Linneo and Carlo Ausonio Tagliabue, who had provided him with the plant.
The Campsis they are not difficult to cultivate plants but need mild climates as they cannot bear the low winter temperatures. If they are raised outdoors, it would be advisable, for the winter period, if the temperatures drop significantly in the area, protect the stems with a non-woven fabric sheet.
They are plants that must be grown in full sun as it is necessary for the growth and maturation of the flowers. The best exposure is to the south or west.
Care must be taken not to allow the plant to grow anchored to a tree, as it could over time suffocate it.
The watering in the Campsis they must be regular and frequent with high ambient humidity.
TYPE OF SOIL - REPOT
The Campsis they are not particularly demanding in terms of soil, the important thing is that it is light and well draining as they do not tolerate water stagnation.
Around the plant in spring it is advisable to mix an organic fertilizer with the earth.
It is preferable not to prune young plants of Campsis as this would slow their growth. Conversely, an adult plant should be pruned vigorously at the end of winter - early spring both to contain its size and to favor the growth of new shoots and consequently flowering.
Remember to use cutting tools that are clean and disinfected, possibly with a flame to prevent them from becoming a vehicle for parasitic diseases.
The period varies according to the species but in any case it is generally for the whole summer and until the beginning of autumn.
The multiplication of Campsis occurs by cuttings or by offshoots.
MULTIPLICATION FOR TALEA
At the beginning of summer (June - July), 10-15 cm long non-lignified stem or soft wood cuttings are taken.
The cuttings must be cut immediately under the node by cutting obliquely as this allows for a greater surface for rooting and avoids the accumulation of water on this surface.
Use a razor blade or a sharp knife to avoid fraying of the fabrics. Make sure that the tool you use for cutting is clean and disinfected (preferably over a flame) to avoid infecting the fabrics.
After removing the lower leaves, they settle in a compote formed by peat and sand in equal parts by making holes with a pencil, as many as there are cuttings to be arranged, taking care to gently compact the soil.
The box or pot is then covered with a clear plastic sheet or a hooded bag after placing sticks in the ground to keep the plastic away from the cuttings and tightening the bag with an elastic to prevent moisture loss. Every day the plastic is removed to check the humidity of the soil and to eliminate the condensation that has surely formed from the plastic.
Once the first shoots start to appear, it means that the cutting has taken root, at which point the plastic is removed permanently and the pot is placed in a brighter area, and the cuttings are expected to become stronger.
The new plants will be ready for use as early as the following spring.
MULTIPLICATION BY PROPAGE
To carry out the multiplication by offshoot, it is necessary to bury a part of a branch with a diameter not exceeding 1 cm, making a part come out upwards. The folded part is buried by fixing it with a U-shaped device by making an incision in the curve of the branch and sprinkling the wound with rhizogenic hormones that favor rooting while the part that protrudes from the ground is fixed to a support.
It takes some time for the roots to form and detach from the mother plant.
PARASITES AND DISEASES
Presence of small light-colored insects on the plant
If you notice small white-yellowish-greenish mobile insects you are almost certainly in the presence of aphids or as they are commonly called lice.
Look at them with a magnifying glass and compare them with the photo on the side, they are unmistakable, you can't go wrong.
Remedies: treat the plant with specific pesticides readily available from a good nurseryman. These are generally systemic products, i.e. they enter the lymphatic circulation of the plant and are therefore absorbed during the nutrition of the insects.
The name of the genus Campsis comes from the Greek kampé "Folded" with reference to the curved stamens.