Vitax Hydrangea Colourant - 500g
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B&QB&Q - Hydrangea Colourant Plant Feed Treatment Blue Hydrangea 500G
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Product Information
Full details
Vitax Hydrangea Colourant is an essential treatment for gardeners looking to achieve or maintain vibrant blue hues in their hydrangea flowers. It is best suited for owners of mophead or lacecap hydrangea varieties that have the genetic potential for blue blooms, providing the necessary aluminium compounds to influence soil chemistry. A key caveat is that this product only works on varieties capable of producing blue flowers; it will not change white or naturally red/pink hydrangeas into blue.
All features
| Brand | Vitax |
|---|
Extended Product Information
FAQs
Will this turn all hydrangeas blue?
No. It only works on blue-flowering varieties. It has no effect on white hydrangeas or those that are genetically fixed to be red or pink.
Can I use this on container plants?
Yes, it is perfectly suitable for use in containers, though you should monitor the dosage carefully to avoid over-concentration in small volumes of soil.
How often should I apply it?
Apply according to the instructions on the packaging, typically at the start of the growing season to ensure the aluminium is available when the plant begins to form flower buds.
Is this product safe for pets?
As with all garden chemicals, store the product out of reach of pets and ensure it is fully worked into the soil so that animals do not ingest the granules.
Does it affect the health of the plant?
The product is designed to support healthier-looking plants by providing necessary minerals, but it is a colourant and not a substitute for regular fertilizer.
How quickly will I see results?
Colour changes usually occur over the next flowering cycle, as the plant needs time to take up the minerals and incorporate them into the new flower buds.
Troubleshooting
Flowers remain pink despite treatment
Verify that the hydrangea variety is genetically capable of turning blue; some varieties only produce pink or white flowers regardless of soil chemistry.
Colour change is not occurring
Check your soil pH; if the soil is too alkaline, it will lock out the aluminium. You may need to add organic matter or ericaceous compost to help lower the pH.
Visible white residue on leaves after application
Ensure the product is applied directly to the soil rather than the leaves; rinse off any accidental foliage contact with water.
Pros and Cons
Pros
- Simple and effective application process
- Effective for both in-ground and container plants
- Supports healthier looking hydrangea foliage and blooms
- Focused formula for specific colour enhancement
Cons
- Only works on hydrangea varieties genetically capable of turning blue
- Cannot turn naturally white or deep red flowers blue
- Requires consistent application to maintain colour
- Effectiveness is dependent on existing soil pH levels
Setup, Compatibility & Care
To apply, measure the correct amount as specified on the packaging and spread evenly around the base of the hydrangea plant, avoiding direct contact with the foliage. Gently fork it into the top layer of soil and water thoroughly to help the nutrients reach the root zone. This product is compatible with most standard gardening practices but should be kept in a cool, dry place away from children and pets. Always wear gloves when handling garden treatments to prevent skin irritation. Avoid using heavy lime applications in the same area, as lime increases soil pH and will counteract the effects of the colourant.