Hydrangea into a pure blue flower

There is a kind of anthocyanin in Hydrangea, which will become blue when combined with aluminum ions. However, when raising flowers, most of the soil does not contain aluminum, so the flowering is generally pink

We can apply aluminum sulfate fertilizer every 10 days and add some aluminum ions before the flower buds of Hydrangea form. Or apply a little ferrous sulfate solution and first-class white vinegar to Hydrangea, which can keep the soil acidic and open blue flowers

Hydrangea into blue purple pink flowers

Sometimes, you can also see that Hydrangea is not a single color, but multi-color, mixed colors, very beautiful. It's like a hydrangea with blue and pink flowers on it. The color changes gradually, which is very dreamy

Letting Hydrangea bloom in this color is actually delaying the time of fertilization. After Hydrangea slowly blooms pink, acidic fertilizer is used, so that the acidity and alkalinity of the soil will change, and the color of the flowers will also change

Hydrangea into purple flowers

Hydrangea flowers can also produce small purple flowers. When using acid fertilizer for Hydrangea, it should be used before the formation of flower buds and stop after color development. In this way, the color of flowers will change with the salinity of soil, because the acidity will gradually fade, showing neutral or weak acidity, and the flowers will be blue and purple

Hydrangea into pink flowers

In fact, what pink flowers need is alkaline soil. If it is alkaline soil when breeding, it doesn't matter. If the soil itself is acidic, it needs to be adjusted to alkaline soil and alkaline fertilizer can be used, such as sprinkling some plant ash< span>