Blueberries fertilizing during fruiting?

[dimitri_7a]

What I do is 1-2 small applications of Elemental Sulfur (if pH needs to be lowered) and 3-4 apps of Ammonium Sulfate

My schedule is like this:

• Shortly before or after bud break test soil pH, if pH needs to be lowered apply Elemental Sulfur and then apply Ammonium Sulfate (~1tbsp / plant - age dependent) - I just sprinkle the dissolvable granules wide around the base
• Do 2-3 more Amm. Sulfate applications, evenly spread out through the growing season stopping before late summer
• Also in late summer, if you think you need to further lower pH you can test soil pH and apply Elemental Sulfur again

When I used it Holly Tone appeared to basically be Milorganite (or similar organic fert) mixed with a small amount of Elemental Sulfur, kind of a ripoff IMO.

You might find this also find this post / thread useful:

AMMONIUM SULFATE for BLUEBERRIES

Figured I would share this very detailed publication about blueberry fertilization I found by University of Georgia. University of Georgia - BLUEBERRY FERTILIZATION IN SOIL.pdf (54.5 KB) (source) Here is a screenshot of a table in the pdf for the app rates of different fertilizers at different growth stages. Its a bit confusing but I think the amounts indicated for AS are for one application done in the summer. [image]