best approach to early spring soil acidification?
I have 14 blueberry plants starting their 3rd spring, 1/2 of my plants were showing signs of ph related stress last summer.
we're a coupled of weeks away from the spring thaw (theres still 2' of snow cover) but I am trying to figure out the best approach to getting the soil ph back where it needs to be.
I have 7.5 ph well water. soil for plants was 50/50 peat and native soil at 7ph 3 years ago. heavily mulched with wood chips. soil is sandy loam and very well drained (on a slight slope)
it was quite dry last year and I believe the watering is what harmed the plants.
I have aluminium sulfate and also plan to brew up some acidified water with sulfuric acid added to well water.
with all the snow melt even without a lot of rain things will be quite wet this spring.
would a liberal dose of alum sulfate plus snow melt provide rapid improvement in ph?
if some other approach is better I'm all ears.
going forward I intend to treat the soil with sulfur but I know thats a long term approach and won't help this spring.