Product foundation
A specialist colour-care product for blue and purple hydrangeas that respond to pH and aluminium availability.
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To preserve or restore blue and purple tones in hydrangeas that can naturally express these colours, Hydrangea blue-maker 200gr provides targeted care with aluminium sulphate. The clear rate of 25 g per plant and two applications from winter to early spring make the programme simple, measured and easy to follow.

Aluminium sulphate supports the availability of aluminium in the growing medium, a factor associated with blue colour development in certain hydrangeas. The result depends on the variety and the conditions in the growing medium, so its use is targeted rather than general for every hydrangea.
A specialist colour-care product for blue and purple hydrangeas that respond to pH and aluminium availability.
It focuses on the specific need of suitable blue and purple hydrangeas without being presented as a solution for every colour or variety.
The 25 g rate per plant and clear application period make it easy to organise your hydrangea colour care.
The 200gr pack provides eight 25 g applications, covering up to four plants when the two recommended applications are made per plant.
Hydrangea blue-maker is suitable when you know your hydrangea can express blue or purple tones and want to care for its colour in a targeted way.
For varieties capable of staying blue when their colour is beginning to shift.
For targeted care of varieties that respond to aluminium availability in the growing medium.
Apply the rate carefully around the root area and water well, without using more than recommended.
Use around the base of the plant during the recommended winter and early-spring period.
Apply one measured 25 g dose per hydrangea. You can spread it around the root area and water well, or dissolve it in irrigation water. Apply in winter and early spring; two applications are normally sufficient.
Use 25 g of product for each plant and each application; do not increase the rate in pursuit of a faster result.
Spread the dose over the soil around the root area, avoid direct contact with the stem, and water well.
Dissolve the dose in irrigation water and apply the solution evenly around the root zone.
Complete the programme with a second application during the recommended winter-to-early-spring period.
Use only on hydrangeas that can naturally express blue or purple flowers. White, red and genetically stable pink varieties do not respond in the same way. Always follow the product label.
The 200gr pack divides easily into eight 25 g applications, so you know in advance how many plants the programme covers.
Calculation basis: 200 g ÷ 25 g = 8 applications and 8 ÷ 2 applications per plant = up to 4 plants.
A practical size for targeted care of a small number of hydrangeas, providing eight exact 25 g doses.
Use on the surface around the root area followed by watering, or dissolve it in irrigation water.
The details below apply only to this Hydrangea blue-maker 200gr pack and its stated application rate.
Blue-maker provides targeted colour care, while Hydrangea Plant Food 200gr supplies the nutrition your hydrangea needs during the growing season. Two distinct roles for a clearer care programme.
Short, clear answers about colour, the correct rate and the right application period.
No. The product is intended for hydrangeas that can naturally express blue or purple flowers. White, red and genetically stable pink varieties do not respond in the same way.
Use 25 g of product per plant and per application. Do not increase the rate, and follow the instructions on the label.
Both methods are suitable: spread 25 g around the root area and water well, or dissolve the dose in irrigation water and apply it around the plant.
Apply in winter and early spring. Two applications are normally sufficient for the recommended programme.
Yes, provided it is a suitable blue or purple variety. Apply the dose carefully around the root area, water well and do not exceed 25 g per application.
Yes. Blue-maker mainly cares for colour and is not a complete growth fertiliser. For basic nutrition, use a separate specialist hydrangea fertiliser according to its label.