Fertiliser › Yates Liquid Aluminium Sulphate 500ml Image 1 of 1 Yates Liquid Aluminium Sulphate 500ml $13.50 Apply to hydrangeas to produce and deepen blue-coloured flowers. Get notified by email when this product is in stock. Add To Cart Added! Apply to hydrangeas to produce and deepen blue-coloured flowers. You Might Also Like Tui Enrich Pour & Feed Orchid & Bromeliad fertiliser $16.00 Nitrosol Tomato Fertiliser 500ml $14.90 TUI ORGANIC SEAWEED PLANT TONIC HOSE ON $15.50 Baby Bio Houseplant Food 40ml $5.90 SEAWEED FISH FERTILISER $13.00