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Tui Hydrangea Blue Aluminium Sulphate 650g

SKU: THYDB650

$11.74

Enhances blue blooms – intensifies the deep blue colour of hydrangeas
Acidifies soil – lowers pH to support acid-loving plants
Ideal for – hydrangeas, azaleas, camellias, rhododendrons, gardenias, and more
Easy to apply – use every 3–4 weeks during the growing season
Convenient size – 650g resealable pouch for easy use and storage
Made for NZ gardens – tailored to local growing conditions

In stock (can be backordered)

Brand:Tui

Tui | Hydrangea Blue Aluminium Sulphate 650g

Tui Hydrangea Blue Aluminium Sulphate 650g is the perfect solution for creating rich, vibrant blue hydrangeas in your garden. Specially formulated to acidify the soil, it enhances the deep blue tones in hydrangea flowers and supports healthy growth in a variety of acid-loving plants. Add it to your flower garden and enjoy more vivid blooms and lush foliage.

This product is easy to use and comes in a convenient resealable pouch for mess-free storage.

Key Benefits:

Enhances Blue Colour: Intensifies the rich blue hues of hydrangea flowers
Acidifies Soil: Lowers soil pH for optimum plant health and flower development
Versatile Use: Ideal for hydrangeas, azaleas, camellias, rhododendrons, gardenias, and more
Easy to Apply: Simple instructions for effective use every 3–4 weeks
Handy Resealable Pack: Keeps product fresh and easy to store

Directions for Use (Established Plants):

Apply 30g (approx. 2 tbsp) per square metre of garden
Lightly fork into soil around the plant
Water in well, rinsing any product off foliage
Apply in spring before bud burst, then again in October and November

Create stunning blue blooms and support healthy growth with Tui Hydrangea Blue – made for Kiwi gardens.

FAQs

What does Tui Hydrangea Blue do?

It acidifies the soil to help hydrangeas develop deep blue flowers and supports the growth of acid-loving plants.

Which plants can I use this product on?

It's ideal for hydrangeas, azaleas, camellias, rhododendrons, gardenias, ericas, daphne, and kalmias.

How often should I apply it?

Apply every 3–4 weeks during the growing season, especially in spring, October, and November.

How do I apply Tui Hydrangea Blue?

Sprinkle 30g per m², lightly fork into the soil, and water in well—avoiding contact with foliage.

When is the best time to apply it?

Start in early spring before bud burst, then apply again in October and November.

Can it harm my plants if overused?

Yes, overuse may overly acidify the soil. Always follow recommended rates on the label.

Is it safe for potted plants?

It's best used in garden beds. For pots, ensure proper dilution and monitor soil pH closely.

Does this product turn pink hydrangeas blue?

Yes, in most cases it will gradually shift pink blooms to blue if the soil is sufficiently acidified.

Weight	1 kg

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