chlorosis on Blueberry
Quick answer
If your Blueberry has chlorosis, the most likely cause is: When soil pH rises above 5.5, blueberries cannot access iron in the soil, even if it is present. This leads to interveinal chlorosis, where leaves turn yellow but the veins remain distinctly green.
Start here:
- 1. Apply a fast-acting chelated iron foliar spray for immediate relief.
- 2. Lower the soil pH by top-dressing with elemental sulfur or watering with a diluted vinegar solution (1 tbsp per gallon) as a stopgap.
Why Blueberry gets chlorosis
When soil pH rises above 5.5, blueberries cannot access iron in the soil, even if it is present. This leads to interveinal chlorosis, where leaves turn yellow but the veins remain distinctly green.
How to reverse chlorosis on Blueberry
- 1
Apply a fast-acting chelated iron foliar spray for immediate relief.
- 2
Lower the soil pH by top-dressing with elemental sulfur or watering with a diluted vinegar solution (1 tbsp per gallon) as a stopgap.
- 3
Repot into an acidic peat-based mix if the current soil is heavily alkaline.
Keep chlorosis off this Blueberry
Consistently monitor pH and avoid using municipal tap water containing high calcium carbonate.