Old Cobblers Farm™ Wicked Organic Blueberry Fertilizer

Unlock the full potential of your blueberry bushes with Old Cobblers Farm™ Wicked Organic Blueberry Fertilizer: a naturally blended, mineral-rich, slow release fertilizer designed specifically for acid-loving plants like blueberries, rhododendrons, gardenias and hydrangeas. Whether you’re looking for “best fertilizer for blueberries in acidic soil,” “organic blueberry bush food,” or “how to get larger sweeter blueberries,” this formula is made to deliver.

Nutrient Composition & Soil Benefits

Balanced NPK for acid loving plants: Total Nitrogen (N) 4.0% (1.5% water-soluble + 2.5% water-insoluble), Available Phosphate (P₂O₅) 6.0%, Soluble Potash (K₂O) 4.0%.

Slow release nitrogen ensures steady growth, avoids shock, promotes strong leaf and shoot development.

Ingredients that support acidic soil requirements: elemental sulfur, bone char, natural protein meals, sulfate of potash and nitrate of soda. These help in lowering soil pH slightly (or maintaining it in the optimal 4.5-6.0 range), making essential micronutrients like iron and manganese more available.

Ideal For this fertilizer is especially formulated for:

Blueberries (high-bush, low-bush, rabbiteye)

Other acid loving shrubs: azaleas, rhododendrons, gardenias, heathers, hydrangeas, and other plants that thrive in soils with pH below neutral

Situations where soil tends toward alkaline, or plants are showing symptoms like yellowing leaves, weak bloom, stunted growth from nutrient lockup

What to Expect & Results

Vibrant fruit production: Expect fuller bloom, better berry set, sweeter flavor when the plant is properly fed and soil pH is favorable.

Deeper green foliage, less chlorosis: Because iron and other micronutrients are more available in acidic soils, plants fed with this fertilizer should show healthy foliage and reduced yellowing.

Stronger root development and winter hardiness: Fall applications allow the fertilizer to feed root growth and help plants prepare for frost/dormancy; spring applications then boost above ground growth and flower buds.

Soil health improvement: Organic components help improve soil structure, water retention, encourage beneficial microbes, and slowly build organic matter.

How & When to Apply

When: Twice yearly recommended — once in early spring just as growth resumes, and again in fall after harvest to build reserves. If only one application is possible, the fall feeding is the most strategic for long-term health and fruit yield.

How much: Spread 1 pound per 2 feet of crown diameter beneath the drip line. Blueberry feeder roots are shallow and often extend beyond the branches—cover the full root zone.

Mulching tip: You can apply over mulch, but for quicker uptake, temporarily remove mulch, apply fertilizer, lightly incorporate or water in, then re-mulch.

Why Choose This Product

If you want an organic blueberry fertilizer that expands yield, flavor and plant vigor, especially on acidic soil, this is designed for you. Unlike generic fertilizers, this product addresses both nutrient needs and soil pH conditions that are critical for healthy blueberries. No vague “plant food” — this is a specialized formula for acid loving fruiting shrubs.