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Growing Success 500g Hydrangea Colourant


Price: £4.62
In stock.
Dispatched from and sold by Seed Shop.
7 new from £3.12
  • Changes the colour of hydrangea blooms from pink to blue
  • Enhances the colour of all lime-hating plants
  • Mix in at a rate of 50g/m2 for beds and 50g/5 litres compost for containers

Frequently Bought Together

Growing Success 500g Hydrangea Colourant + Vitax 250g Hydrangea Colourant + Westland Sulphate of Iron Ericaceous Plant Food 1.5kg
Price For All Three: £16.07

These items are dispatched from and sold by different sellers.

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Product details

  • Boxed-product Weight: 907 g
  • Delivery Destinations: Visit the Delivery Destinations Help page to see where this item can be delivered.
  • Manufacturer reference: 4268
  • ASIN: B0036OVOHU
  • Date first available at Amazon.co.uk: 1 Feb 2010
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (15 customer reviews)
  • Amazon Bestsellers Rank: 6,982 in Garden & Outdoors (See Top 100 in Garden & Outdoors)

Product Safety

This product is subject to specific safety warnings
  • Risk of serious damage to eyes
  • Do not breathe dust
  • In case of contact with eyes, rinse immediately with plenty of water and seek medical advice

Product Description

Product Description

A formulation of Iron and Aluminium Salts acidifies the soil and provides optimum conditions for hydrangeas which will change the colour of pale pink varieties to blue and darker pink varieties to mauve blue.

Product Description

In alkaline soil ericaceous compost should be added plus a double dose of colourant.

Customer Questions & Answers

Customer Reviews

4.2 out of 5 stars
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Most Helpful Customer Reviews

7 of 7 people found the following review helpful By blueeyedchick on 23 July 2012
Verified Purchase
Bought this colourant a few weeks ago and applied it as soon as it arrived as my Hydrangea was almost back to a full pink.
Within a few days and much rain the roots have absorbed the aluminium sulfate and I can now see that the flowers are beginning to change back. So, although it is early days I shall continue to make applications throughout the growing season as instructed by the manufacturer.

My suggestion to those who have either bought or been given one of these beautiful plants is too buy the colourant at the time of purchase,treating the plant each year, this will ensure you keep the colour you originally fell in love with. I have also found that Hydrangeas like a little dusting of compost with peat mixed in as a top dressing in the spring.

Would recommend you give it a try as it is such a good price.
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1 of 1 people found the following review helpful By Discerning on 11 Aug 2013
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My wife has used this on a large bed of Hydrangeas for the past four seasons. It works very well and we have had the benefit of some really gorgeous colored blossoms. Price and service good. Recommend
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By Mrs. Katie Lord on 18 May 2014
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It does what it says it does blue Hydrangeas needs doing early in season . Works really well. So there
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By Hpor on 10 May 2014
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Yes and I have used it before and would recommend it for keeping a lovely blue hydrangea the same each time.
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As my blue hydrangea had turned pink I used this in the autumn and it was just beginning to work. Perhaps next summer I'll be rating it 5 stars!
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By Book Lover24 on 30 May 2013
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It works! Sprinkled this on my acer and some acid loving plants. This year's grwoth improved as a result and the colour of the leaves remained red
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By William M. Weir on 8 Sep 2012
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this was the first i had heard of this colourant i must say that it has worked a treat and my hydrangea is now deep blue.thank you.
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By Christine on 20 Aug 2012
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Used it on a number of hydrangeas.

It worked on one that was through age beginning to lighten and just improved some deeper blue ones
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