Down To Earth All Natural Fertilizers Organic Acid Mix 4-3-6, 5 lb — Slow‑Release Fertilizer for Acid-Loving Shrubs & Blueberries

Down To Earth All Natural Fertilizers Organic Acid Mix (4-3-6) is an all-natural, slow-release fertilizer formulated to support acid-loving plants like rhododendrons, azaleas, camellias, blueberries and evergreens.

This 5 lb bag provides a balanced, organically sourced nutrient blend designed for plants that prefer lower soil pH. The formula supplies steady nitrogen, phosphorus and potassium while gradually releasing nutrients to avoid spikes. Use it in spring for active growth, at bloom time to support flowers and fruit, and in fall to strengthen roots ahead of winter.

How does this mix help acid-loving shrubs and berries?

This Acid Mix supplies nutrients appropriate for species that thrive in acidic soils without altering the soil pH dramatically. The organic components break down slowly, feeding plants over weeks and reducing the need for frequent feeding. It’s formulated to encourage healthy foliage, increased bloom set and better fruit production when used according to label directions.

• Balanced 4-3-6 N-P-K ratio tailored for acid-loving plants
• Slow-release organic ingredients for sustained feeding
• Suitable at planting, during active growth and at bloom time

When and how should I apply the fertilizer for best results?

Apply in early spring to support vegetative growth, again at the start of blooming, and consider a fall application to promote root development. For established shrubs and fruiting plants, broadcast evenly around the root zone and lightly work into the topsoil or mulch layer. Water after application to help incorporate nutrients into the root zone.

• Spring application for new growth and vigor
• Apply at first bloom to encourage flowers and fruit
• Fall feeding supports root health before winter

Which plants are ideal candidates for this 4-3-6 formula?

Acid Mix is intended for common acid-loving ornamentals and edibles. It’s a good fit for rhododendrons, azaleas, camellias, hydrangeas, many evergreens, and small fruit like blueberries, raspberries and strawberries. It also works for certain vegetables such as potatoes and other crops that prefer lower-pH soils.

• Ornamental shrubs: rhododendrons, azaleas, camellias, hydrangeas
• Berries and fruit: blueberries, raspberries, strawberries
• Evergreens and acid-preferring vegetables like potatoes

Is this product environmentally friendly and safe for organic gardens?

Yes. The mix is made from organic, sustainably sourced materials and contains no synthetic chemicals, making it appropriate for organic gardening practices. Its slow-release nature lessens nutrient runoff risk and supports soil biological activity. Always follow label instructions for application rates and timing.

• All-natural, sustainably sourced ingredients
• Slow-release feed reduces over-application and runoff
• Compatible with organic garden management when used as directed

Who is this for: Gardeners and landscapers who grow plants that prefer acidic conditions and want a reliable, all-natural fertilizer that feeds gradually. It’s well suited to home gardeners managing beds, containers and small orchards, as well as professionals looking for an organic option to support flowering, fruiting and winter hardiness without synthetic additives.

Ingredients

Cottonseed Meal Fish Bone Meal Langbeinite Rock Phosphate Kelp Meal Humates Soil Microorganisms