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Rhododendron without flowers

Rhododendron without flowers



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Question: why doesn't my rhododendron bloom?


I'm unable to make my rhododendron bloom again. I have already repotted and fertilized it. The new leaves are a slightly lighter green and the buds never bloom ... some had already been returned last year but perhaps due to various removals they have not yet opened and 6/7 months have passed. Now I'm officially in the definitive house but it seems to me that something is missing ... despite having fertilized it has grown very little. Thanks!

Rhododendron without flowers: Answer: the flowering of the rhododendron


Dear Sara,
rhododendrons are large evergreen shrubs; the varieties grown in the garden have among their ancestors of species of Asian origin. They are fairly resistant shrubs, but I tend to tan sometimes; the rhododendron buds are present on the plant already in summer, or autumn, and remain there until the following spring, when they bloom. If, however, in all the months that elapse between the preparation of the buds and the flowering, something happens to the plant, it does not open the buds, it often loses them and replaces them with the buds for the following year. For this reason repottings, displacements, position changes are usually carried out just after flowering, so that the plant can easily get used to the new conditions before preparing the buds. An autumn repotting often causes in the plant the preparation of only leaf buds, without any flower. Sometimes it is also a drought in the autumn, or moving to a sunnier, or even very shady, area, and the rhododendron refers to flowering for a year. Pruning also has this effect, especially if practiced in autumn or at the end of winter, because by shortening the tips of the branches, the flower buds are removed; clear that the shrub will produce new ones, but they will be for the following year. As for the light colored leaves, perhaps the soil in the vase, or the water you supply, are not entirely suitable for your rhododendron. Rhododendrons and azaleas are acidophilic plants, this means that they need a special soil, with a very low pH, mainly consisting of peat; if they are watered with very calcareous water, the ground tends over time to become excessively limestone, and therefore it must be replaced with fresh and new peat. So, either water our rhododendrons with limestone-free water (just let it settle for about 24 hours, before using it for watering), or prepare to repot the rhododendrons every year, and in spring we provide a good soothing fertilizer.