

Blue one is a soil amendment to enhance the pure blue colour of blue Hydrangeas. Blue One Lowers the pH in a neutral or alkaline soils which results in amazing blue b looms. For astounding blue hydrangea blooms, soil pH should be in the range of 5.0-5.8.
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Existing Plants:
Simply tear opened pouch and sprinkle blue one evenly on top of container soil according to the chart below. blue one has a release time of approximately 2-3 months (at a 21°C average soil temperature). Re-apply as needed.
Container Size: | Rate: |
10 cm (4) | 1/6 pouch (5 g) |
15 cm (6") | 1/3 pouch (10 g) |
20 cm (8") - 1 Gallon | 1/2 pouch (15 g) |
25 cm (10") - 2 Gallon | 1 pouch (30 g) |