To solve the problem, how to change the color of hydrangeas, you should remember that the color of petals can be changed from blue to pink and vice versa. White flowers such manipulations are resistant, they can barely turn pink in late summer.
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Change hue to blue
Celestial impart color hue of the aluminum compound. To change the coloring of the petals from pink to blue, add the salt of this mineral in the soil. To reverse the effect of substance extracted from soil by several methods.
For blueness inflorescences into the soil around the bush is made of aluminum sulphate. His slightly dropwise and make watering. During the summer season it is necessary to add the substance several times, t. To. It is neutralized with high rates of pH. On soils with weakly-acidic or high acidity level will suffice 1 reintroduction.
Sales can find industrial products based on aluminum sulphate, which are readily soluble in water. They can be used at run time, just adding to the liquid according to the instructions. Basically, 10 l of water take 40 g of aluminum sulfate. Under 1 plant is necessary at a time pour 20-30 liters of solution, otherwise the color change will be partial. After 3-4 weeks, the procedure is repeated.
Aluminum sulfate is well absorbed by the root system of hydrangeas only in acidic soils. To increase this figure, it can be added to soil residues of coffee, fresh-cut hay, sawdust, apple teas and other organic matter. Excellent parameters affect the acidity of the soil, industrial fertilizer with low phosphorus content and a high - potassium compounds.
, Ground chalk or phosphatic fertilizers to obtain heavenly shades of color, do not make as feeding wood ash, bone meal. On soils with alkaline reaction hydrangea petals will not be blue. They only change the color to purple or pale purple.
We do pink buds
To change the color from blue to pink, you need to block access to aluminum salts in the root system of plants. Because the bushes are well absorb the compound only in acidic soils, it is necessary to change this setting in the neutral or alkaline. To this end, throughout the season under the bushes make dolomite flour, crushed chalk or ash.
Inhibit admission of aluminum compounds and phosphate fertilizers. Good result gives triple superphosphate granules fertilizing plants.
By reducing the level of acidity of the soil it is important not to overdo it. On soils with high performance alkaline flowers may suffer from iron deficiency. As a result, the bushes can worsen the appearance. In severe cases observed dropping inflorescences and foliage.
If, however, on a bed of hydrangea grow only with sky-blue buds, but want at the same time with them and grow plants with pink petals, the perfect option would be construction of special containers. They are filled with purchased substrate, specifically designed for pink hydrangeas and do not allow mixing with the ground on a bed.
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