Wicked Organics Organic Organic OMRI Listed

8-3-5 Fertilizer – Organic Gardening

NPK 8-3-5

8-3-5 Organic Stress Guard Fertilizer is a balanced, all-natural nutrient blend designed to strengthen turf and landscape plantings during periods of environmental stress. Made exclusively from high-quality organic ingredients — feather meal, meat and bone meal, blood meal, and langbeinite — this fertilizer delivers nutrients slowly and steadily, making it ideal for long-term, sustainable plant health. The exceptionally high percentage of water-insoluble nitrogen (7.20% of the 8.00% total) means nutrients are gradually released through microbial activity in the soil, minimizing leaching and maximizing plant uptake over weeks rather than days. In addition to its NPK profile, this blend contributes critical secondary nutrients: 3% calcium for cell wall integrity, 2.2% magnesium for chlorophyll production, and 4% sulfur for protein synthesis — minerals that enhance plant metabolism and help turf and ornamentals resist heat, drought, and traffic stress. Performance is enhanced when applied in conjunction with core aeration, which opens channels for granules to reach the root zone directly. Old Cobblers Farm™ Wicked Organics 8-3-5 Stress Guard is the organic professional's choice for conditioning turf and landscapes against the toughest environmental challenges.

Application Rates FAQs
Nutrient Profile
WO-8-3-5
8–3–5
8-3-5 Fertilizer – Organic Gardening
Derived From
  • Feather Meal, Meat and Bone Meal, Blood Meal, and Langbeinite. Also provides: Calcium (Ca) 3.0%, Magnesium (Mg) 2.2% (2.2% Water Soluble), Sulfur (S) 4.0% (4.0% Combined Sulfur).
8-3-5
NPK Ratio
Organic
Formula Type
2-4 applications per growing season; ideal for summer stress conditioning and fall recovery
Feeding Frequency
—
Compatible Plants
What It Is

Understanding 8-3-5

Wicked Organics 8-3-5 Stress Guard is a premium organic fertilizer formulated from four natural protein and mineral inputs: Feather Meal, Meat and Bone Meal, Blood Meal, and Langbeinite (a naturally occurring mineral providing potassium, magnesium, and sulfur simultaneously).

The guaranteed analysis reveals why this formula excels at stress conditioning: Total Nitrogen 8.00% (0.20% Ammoniacal, 7.20% Water Insoluble from feather meal and meat & bone meal, 0.60% Other Water Soluble), Available Phosphate 3.00%, Soluble Potash 5.00%, Calcium 3.00%, Magnesium 2.20% (Water Soluble), and Sulfur 4.00% (Combined).

The 7.20% water-insoluble nitrogen is the defining feature — this slow-release nitrogen feeds through microbial decomposition rather than dissolving in water, meaning nutrients become available steadily over weeks as soil biology processes the feather meal and meat & bone meal proteins. This eliminates the surge-and-crash cycle of fast-release fertilizers and greatly reduces the risk of nitrogen flushes, leaching, or burn.

N
Nitrogen — 8%

8.0% Total Nitrogen (0.20% Ammoniacal, 7.20% Water Insoluble, 0.60% Other Water Soluble) — delivers the highest nitrogen content in the Wicked Organics line with 90% in slow-release water-insoluble form from feather meal and meat & bone meal for sustained feeding without burn risk.

P
Phosphorus — 3%

3.0% Available Phosphate (P2O5) — supports root development and helps establish turf and plantings during renovation and overseeding.

K
Potassium — 5%

5.0% Soluble Potash (K2O) — from langbeinite, enhancing stress resistance, strengthening cell walls, and improving plant metabolism during periods of heat, drought, and heavy traffic.

Recommended Plants

Best For

Turfgrass
Sports Fields
Lawns Under Stress
Renovation/Overseeding
Warm-Season Turf
Ornamental Shrubs
Perennials
Landscape Beds

Growing Detail

Turfgrass and sports fields benefit most from the stress-conditioning properties — the calcium strengthens cell walls against traffic damage while magnesium and sulfur support recovery. Lawns facing summer heat or drought stress gain sustained nitrogen without the flush that weakens turf. Renovation and overseeding projects receive slow, steady nutrition during the critical germination and establishment period. Warm-season turf (Bermuda, Zoysia, St. Augustine) responds well to the sustained nutrient release during peak growth. Ornamental shrubs and perennials receive balanced nutrition without the risk of nitrogen flush or burn that can damage ornamental plantings.
Dosing Guide

Application Rates

Garden Beds
6.25-12.50 lbs per 1,000 sq ft (delivers 0.50-1.00 lb actual N per 1,000 sq ft)
Container / Pot
2-3 tbsp per gallon of soil
Water Mix
N/A — granular application
Lawn
6.25-12.50 lbs per 1,000 sq ft; enhanced results when applied during or after core aeration
Trees
Apply around drip line — rate varies by tree size
Per Acre
270-545 lbs per acre
Frequency
Every 2-4 weeks

How to Apply

Seasonal Notes

Spring: Apply for early-season green-up and to build stress tolerance ahead of summer heat. Summer: Primary stress-conditioning window — apply before or during heat/drought stress periods. Enhanced results with core aeration. Fall: Ideal for recovery applications after summer stress and to prepare turf for winter. Also excellent during renovation and overseeding. Winter: Do not apply to frozen or dormant turf.
How It Compares

Side by Side

The 8-3-5 delivers twice the nitrogen of the 4-3-3 and 60% more than the 5-3-4, making it the highest-nitrogen organic option in the Wicked Organics line. The 90% water-insoluble nitrogen fraction is also the highest — versus 70% in the 5-3-4 and approximately 65% in the 10-2-8. The langbeinite-derived potassium provides a triple benefit (K + Mg + S) that single-source potassium fertilizers cannot match. Compared to the 10-2-8 All Season, the 8-3-5 has more phosphorus and more secondary nutrients (higher Ca, Mg, and S), making it the better choice for stress conditioning specifically.

Safety & Storage

Store in a dry environment. Natural product. Wear gloves if skin sensitivities appear. Wear approved respirator if sensitive to dust. Eye protection optional. Wash hands after use. Keep away from water sources.

Got Questions?

Frequently Asked

  • Organic 8-3-5 is a high-nitrogen organic fertilizer designed for crops and plants that need vigorous vegetative growth from natural ingredients. The elevated nitrogen (8%) fuels lush foliage, strong stems, and rapid canopy development, while phosphorus (3%) supports root health and potassium (5%) enhances disease resistance and plant resilience. It is especially effective for leafy vegetables, lawns, heavy-feeding crops, and any plants in their active growth phase. Old Cobblers Farm™ Wicked Organics 8-3-5 Fertilizer delivers robust organic nutrition for gardens, landscapes, and container plantings.
  • Yes, 8-3-5 is one of the best organic fertilizers for lawns. The higher nitrogen content promotes thick, green turf growth comparable to synthetic lawn fertilizers, while the organic ingredients feed soil biology and improve soil structure over time. The potassium component strengthens grass against drought, disease, and traffic stress. Apply 5–8 pounds per 1,000 square feet in spring and fall for best results. Old Cobblers Farm™ Wicked Organics 8-3-5 Fertilizer delivers the nitrogen lawns crave through natural, slow-release ingredients that build healthier soil with every application.
  • Both are high-nitrogen organic formulas, but they differ in balance. 10-2-8 has more nitrogen and significantly more potassium, making it better for fruiting crops and plants under stress. 8-3-5 provides slightly less nitrogen but more balanced phosphorus and potassium, making it more versatile for general garden use, lawns, and mixed plantings. Choose 10-2-8 for maximum growth and fruit support, and 8-3-5 for well-rounded organic feeding across diverse plant types. Old Cobblers Farm™ Wicked Organics offers both formulas for flexible organic nutrition.
  • Crops that benefit most from 8-3-5 include leafy greens (lettuce, kale, spinach, chard), brassicas (broccoli, cabbage, cauliflower), corn, squash, cucumbers, herbs, and turfgrass. Any crop in its vegetative growth phase responds well to the higher nitrogen. It also works as a general-purpose organic fertilizer for mixed gardens, flower beds, shrubs, and container plantings. Old Cobblers Farm™ Wicked Organics 8-3-5 Fertilizer provides versatile, OMRI-Listed organic nutrition for virtually any growing situation.
  • For garden beds, apply 3–5 pounds of organic 8-3-5 per 100 square feet, mixing into the top 4–6 inches of soil before planting. For side-dressing, use 2–3 pounds per 100 square feet around established plants. For lawns, apply 5–8 pounds per 1,000 square feet. Reapply every 4–6 weeks during active growth. The slow-release organic ingredients provide sustained nutrition between applications. Old Cobblers Farm™ Wicked Organics 8-3-5 Fertilizer is gentle and forgiving, making it easy to apply correctly for consistent organic results.
  • Yes, organic 8-3-5 works well in containers and raised beds. Mix 1–2 tablespoons per gallon of soil at planting, and top-dress with 1 tablespoon every 4–6 weeks during the growing season. Container soil may have less microbial activity than garden soil, so adding compost to your potting mix helps organic fertilizers break down more efficiently. The gentle, slow-release nature of organic 8-3-5 reduces the risk of salt buildup that can occur with synthetic container fertilizers. Old Cobblers Farm™ Wicked Organics 8-3-5 Fertilizer is safe and effective for all container-grown plants.
  • Wicked Organics 8-3-5 is formulated from vegetable protein meals, animal protein meals, bone char, natural sulfate of potash, and nitrate of soda. These OMRI-Listed ingredients provide a diverse nutrient profile beyond just NPK, including calcium, sulfur, and trace minerals. The protein meals serve as the primary slow-release nitrogen sources, while bone char provides phosphorus and calcium. Sulfate of potash delivers chloride-free potassium. Old Cobblers Farm™ Wicked Organics 8-3-5 Fertilizer uses only approved natural ingredients for genuine organic growing.

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