It is a fairly informal bush, with erect stems, poorly branched, brown in colour; the foliage is green, oval or lanceolate, it develops after flowering.
The forsythia bloom at the end of winter, between March and April, producing numerous golden-yellow flowers, which bloom along the branches of the previous year.
They tend with the time to lengthen a lot the ramifications, therefore it is advisable to shorten a little the branches after the flowering, cutting up to the ground some of the old branches, that have already bloomed.
The Forsythia x intermedia doesn’t fear the cold; this type of shrub has a very rustic character.
This variety of plants prefers sunny, or semi-shady locations.
A poorly sunny position can cause scarce or even absent blooms even if the plant, being very resistant will be able to survive even in these conditions. The Forsythia zabel does not fear the wind, so it also adapts to exposed areas, but if the intensity is quite strong, then the flowering will be less lush.
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These shrubs, if cultivated in the open land, usually settle for the rains.
As soon as they are planted, however, it is necessary to water them deeply; the specimens grown in containers may need watering in case of prolonged drought, as they cannot take advantage of the humidity naturally present in the soil.
The zabel forsythia suffers more from possible water stagnations that can form on the ground, than from water shortages.
The Forsythia x intermedia adapts easily to any soil, preferring however soft and rich of humus soils, very well drained. It fears water stagnations, therefore it is good to mix a good quantity of sand to the cultivation substratum in order to guarantee the right drainage degree. For this reason, it would be better to avoid soils that are too rich in clay.
The multiplication of this plant usually takes place using the preparation of cuttings or through the offshoots.
It is also possible to rely on seeds to obtain new plants; propagation by seed can be carried out in spring, even if the resulting specimens are not always identical to the plant that gave the seeds.
Pruning of this plant should be done after flowering, shortening the branches that carried the flowers and eliminating those dry or woody, without buds. Winter pruning, on the other hand, should be avoided.
Forsythia of Zabel – Forsythia x intermedia: Pests and diseases
This shrub is very resistant but can be affected by root rot caused by dangerous waterlogging.
Sometimes mites blatantly ruin the foliage.
Before flowering it may be useful to provide a preventive treatment with specific insecticides and pesticides so as to protect the Forsythia x intermedia from possible attacks.
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- The forsythia belongs to the family of the Oleaceae; native to Asia, is a deciduous shrub that grows turnips
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