Having trouble maintaining low Ph with container blueberries
Two months ago I bought several varities of Blueberry plants. Most of them were in #1 containers.
Since then I have re-potted the majority of them into #3 containers using 50% peat moss and 50% EB stone Acid loving plant potting mix (with some soil sulfur and EB stone acid loving plant organic fertilizer thrown in.)
Initially my ph readings came out around 5.0-5.5 but now after some heavy daily watering my Ph reading are around 7.
What should I do? I haven't watered for a week since the temperatures here in Northern California have dropped.
Will the soil sulfur eventually kick in as the microbials in the soiless potting mix increase?