Hydrangea Colourant 500g

MR. Fothergill's Seeds

£9.95

Hydrangea Colourant is ideal if you want to change pink hydrangeas to blue. The blooms of Hydrangea macrophylla (common names include bigleaf hydrangea, French hydrangea, mophead hydrangea, and hortensia) and Hydrangea serrata (common names: lacecap hydrangea', 'tea of heaven' and 'mountain hydrangea') can change colour based on the amount of aluminium the plants absorb from the soil, which depends on the soil ph. Hydrangeas that grow where iron or aluminium salts are present tend to change colour and produce blue flowers. Pale pink hydrangeas will turn blue, darker pink varieties turning to m

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Registered at Companies House as MR. FOTHERGILL'S SEEDS LIMITED, number 01710774. Checked 2026-08-29.
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Hydrangea Colourant 500g

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