Syringa flowering

Syringa flowering

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Question: syringa flowering

good morning,
in the garden I have two syringa plants that last spring had a wonderful flowering. This year, despite the luxuriant vegetation, they only produced some flowers. They were not pruned and I fertilized them at the end of winter. What could be the cause?

Syringa flowering: Answer: syringa flowering

Gentile Eliana,
The lilacs (syringa vulgaris) are shrubs or small trees, widespread in nature in Europe and Asia, typical of Italian gardens, as they are very easy to grow, and with a splendid flowering. In order to flower these plants need to have a beautiful rich vegetation available, and in the autumn months they must have the perfect climate available; otherwise they will prepare a few flower buds, and tend to bloom little. So it often happens that the spring flowering of the lilacs is heavily influenced by the climate and the care they received in September or October. So if the autumn was too cold, or too hot, excessively dry, or characterized by very intense or persistent rains, your lilac will have prepared a few flower buds, and what you have seen in recent weeks is the result. In addition to this, it is probable that the very abundant flowering of last year has somehow “exhausted” the plant, which therefore this year has shown itself to be a flowering plant. If the plant is still fine, it does not show any other kind of suffering, I believe that there is no problem due to pests or cultivation treatments. However you did very well not to prune it: the lilacs bloom on the wood of the previous year, it means that if we prune them in autumn or in late winter, we will irreparably remove most of the flower buds. Also the autumn fertilization is excellent, but it is advisable to avoid a fertilizer very rich in nitrogen, because otherwise the production of many new green growths and a few flowers is stimulated. Therefore, either manure or humus fertilizer is provided, which contain slow release nitrogen, which will be used again in spring; or a fairly poor nitrogen fertilizer is provided, and more rich in phosphorus and potassium, to stimulate the development of flowering buds and the root system. A good root system allows the shrubs of our garden to easily withstand any periods of excessive rain or, on the contrary, very dry. Don't worry and keep treating your lilac like you've always done, just after flowering spread a slow release fertilizer for flowering plants under your hair, and you'll see that next year your lilac will flourish abundantly. However, consider that a different number of flowers produced from year to year is physiological, and not every year the shrubs bloom in the same way; this is due to the climatic differences present between the seasons, which are different from year to year.


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