Onlywhenthesetwocomponentsarecombined,acidicsoilandsufficientplant-availableaaluminium,dothehydrangeablossomsconsistentlyremainniceandblue.Toensureboth,supplybluehydrangeavarietieseveryspringwithspecialfertiliserforbluecolorationofhydrangea,inaccordancewiththemanufacturer'sspecifications.
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Only when these two components are combined, acidic soil and sufficient plant-available a aluminium, do the hydrangea blossoms consistently remain nice and blue. To ensure both, supply blue hydrangea varieties every spring with special fertiliser for blue coloration of hydrangea, in accordance with the manufacturer's specifications.