Camellia fertilization

Question: Camellia fertilization

On the terrace I have two vases of ortense (a white and a light rose) which, despite having taken steps to protect, have suffered greatly from the rigors of the winter just ended. One of them, in particular, has very small shoots that cannot develop.
I would like to know if a fertilizer with a high concentration of nitrogen (NPK 16 - 5 - 5 + Fe), which I use for other plants and that I know promotes leaf development, can be beneficial (my doubt is due to the fact that it is a matter of acidophilic plants and therefore I know that there are specific fertilizers for these plants, with a much lower percentage of nitrogen).
I would also like to know if, during the flowering period, again for the hydrangeas (I have another on the terrace - with a much larger vase, which instead is very luxuriant), and for the speech above, I can use another fertilizer with a high concentration of potassium.
Thank you very much

Answer: Camellia fertilization

Dear Alberto,
Thank you for contacting us about the hydrangea fertilization questions.
Hortensia belongs to the Hydrangeaceae family and is native to China and Japan.
It is a rustic shrubby plant with large deciduous leaves with a toothed margin.
It normally blooms from July to September with typical globose inflorescences of color that can be white, pink or blue and within a given variety, the color of the flowers may vary depending on the type of basicity or acidity of the soil.
In order to grow well and flourish in a lush and intense way, they need preferably acid and fertile soil, shady locations, sheltered from the wind and frost, require considerable water availability.
With regard to your specific, it is advisable to make an initial fertilization with formulations that favor the vegetation associated with formulations based on amino acids that favor the prompt recovery of the plant from the block caused by thermal factors (cold stress). Later it is recommended to use a specific fertilizer for hydrangeas that provides the right balance between nutrients. Eventually an integration with the flower color intensifiers is carried out. We also advise you to verify that the roots of the perishable plant have not been damaged by the cold, and if this hypothesis were founded it is advisable to intervene with a repotting.