Bone Meal Fertilizer 3-15-0
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- $ 19.99
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- $ 19.99
- Regular Price
- $ 17.99
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- per
Organic Bone Meal 3-15-0 Fertilizer
Premium bovine bone meal with 15% phosphorus and 24% calcium. Slow-release organic nutrition for robust roots, abundant blooms, and stronger plants for 3–4 months per application.
Ideal Applications
FEATURES
🦴 15% Slow-Release Phosphorus
Delivers steady phosphorus over 3–4 months, promoting strong root development, abundant flowering, and quality fruit production without nutrient burn.
💪 24% Calcium for Cell Strength
One of the highest organic calcium sources available. Strengthens cell walls, prevents blossom end rot in tomatoes, and improves overall plant structure.
🌱 Organic & Non-GMO Sourced
Repackaged from certified organic, non-GMO bovine bone meal. Safe for organic gardens and sustainable growing practices.
⏰ Season-Long Feeding
One application at planting lasts 3–4 months as soil microorganisms gradually break down the bone meal, releasing nutrients when plants need them.
🌷 Premier Bulb Fertilizer
The go-to amendment for tulips, daffodils, and other flowering bulbs. Place below bulbs at planting to fuel root establishment and spring blooms.
🦠 Feeds Beneficial Soil Biology
As bone meal decomposes, it nourishes beneficial soil microorganisms that improve nutrient cycling, soil structure, and long-term fertility.
🔥 Low Burn Risk
Gentle, slow-release formula is safe for transplants, seedlings, and established plants when applied at recommended rates.
🌿 3% Nitrogen Bonus
Provides a small but steady nitrogen supply for early-season leaf growth without overstimulating foliage at the expense of roots and flowers.
🍅 Blossom End Rot Prevention
The 24% calcium content makes bone meal one of the best organic tools for preventing calcium-related disorders in tomatoes, peppers, and squash.
🌍 Versatile Garden Application
Works in vegetable gardens, flower beds, orchards, containers, and raised beds. Compatible with most organic and conventional fertilizer programs.
DERIVED FROM
Our bone meal is sourced from 100% organic, non-GMO bovine bone that is steam-processed and finely ground for consistent application and nutrient availability.
Source Material
Complementary Nutrient Sources
SCIENCE BEHIND THE FORMULA
3-15-0: A Phosphorus-Forward Organic Formula
Bone meal naturally delivers high phosphorus and calcium with moderate nitrogen — a profile that excels at root building, flowering, and fruit quality. Best performance when soil temperatures are above 50°F and kept evenly moist, as microbial activity drives nutrient release.
🌿 Nitrogen — 3% (Gentle Growth Support)
Provides slow-release nitrogen for steady vegetative growth without overstimulating foliage. Supports protein synthesis in plant tissues during the critical establishment phase.
🌸 Phosphorus — 15% (Root & Bloom Engine)
The primary nutrient in bone meal. Phosphorus drives root development, energy transfer (ATP), flowering initiation, and fruit set. Essential for bulb establishment and transplant success.
⭐ Potassium — 0% (Pair for Complete Nutrition)
Bone meal naturally contains no significant potassium. For complete nutrition, pair with Potassium Sulfate 0-0-53 for disease resistance and fruit quality.
🦴 Calcium — 24% (Structural Integrity)
Calcium strengthens plant cell walls, improving disease resistance and structural rigidity. Critical for preventing blossom end rot in tomatoes, peppers, and squash. Also supports root tip growth and nutrient uptake.
Why Bone Meal Outperforms Other Phosphorus Sources
⏰ Sustained Release Advantage
Unlike fast-release synthetic phosphorus (MAP, TSP), bone meal releases nutrients gradually over 3–4 months as soil microbes break it down, reducing the risk of phosphorus runoff.
🦠 Microbial Activation
Decomposing bone meal feeds beneficial soil organisms including mycorrhizal fungi, which in turn extend root reach and improve nutrient uptake far beyond the root zone.
💎 Dual Nutrient Delivery
Few fertilizers deliver both phosphorus and calcium in a single organic package. This dual action addresses two of the most common deficiencies in garden soils simultaneously.
What to Expect After Application
Results vary with soil temperature, moisture, and microbial activity. Best performance when soil temps are above 50°F.
COMMON PROBLEMS BONE MEAL SOLVES
APPLICATION RATES AND DIRECTIONS
Apply bone meal at planting time for best results. Work into soil before planting or mix into planting holes. Application rates are general guidelines — always consider soil test results, as phosphorus can accumulate in soil over time.
General Application Rates
| Application Type | Rate | Instructions |
|---|---|---|
| Soil Preparation | 1 lb per 10 sq ft | Mix into top 6" of soil |
| Flowers | 1 cup per plant | Mix into soil around root zone |
| Shrubs & Small Trees | 1 cup under root ball | Plus 1 cup in backfill soil |
| Vegetables | 0.5–1 lb per 10 sq ft | Adjust based on soil P levels |
| Bulbs, Corms & Tubers | 1 tbsp per bulb | Mix 1–2" below bulb placement |
| Potted Plants | 1 tbsp per inch diameter | Mix into potting soil |
Specific Crop Guidelines
| Crop | Application Rate | When to Apply |
|---|---|---|
| Tomatoes | 2 tbsp per hole | At transplanting |
| Roses | 1–2 cups per bush | Early spring & after first bloom |
| Tulips / Daffodils | 1 tsp per bulb | Fall planting |
| Root Vegetables | 2 lbs per 25' row | Before seeding |
| Fruit Trees | 1–3 cups per tree | Early spring |
Conversion note: Approximately 2 cups per pound (varies by grind).
HOW TO USE
Soil & Garden Beds
- Test soil if possible — bone meal is most effective at pH ≤7.0.
- Spread bone meal evenly at the recommended rate (0.5–1 lb per 10 sq ft for general use).
- Work into the top 6 inches of soil with a garden fork or tiller.
- Water thoroughly to begin the microbial breakdown process.
- Reapply at the start of each growing season or every 3–4 months for heavy feeders.
Container & Potted Plants
- Measure 1 tablespoon per inch of pot diameter.
- Mix bone meal into the potting soil before planting, or work into the top 2 inches of existing containers.
- Water well after application.
- Refresh every 3–4 months during the growing season.
Bulb Planting
- Dig the planting hole to the appropriate depth for your bulb variety.
- Place 1 tablespoon of bone meal at the bottom of each hole.
- Mix lightly into the soil 1–2 inches below where the bulb will sit.
- Set the bulb and backfill with soil. Water in well.
Transplants & New Plantings
- Add 1–2 tablespoons of bone meal to each planting hole.
- Mix with the backfill soil so bone meal surrounds the root zone.
- Set the plant, fill the hole, and water thoroughly.
Pro Tip: Maximize Phosphorus Availability
Bone meal works best in slightly acidic to neutral soil (pH 6.0–7.0). In alkaline soils above pH 7.0, phosphorus binds with calcium and becomes less available to plants. If your soil pH is high, consider using MAP 12-61-0 for a faster-acting phosphorus source, or amend soil pH first.
When Bone Meal Is the Right Choice
- Planting bulbs, transplants, or establishing new garden beds
- Organic gardens needing a slow-release phosphorus and calcium source
- Preventing blossom end rot in tomatoes, peppers, and squash
- Building long-term soil fertility with sustained-release nutrition
When to Consider Other Options
- If you need fast-acting phosphorus for a severe deficiency — try MAP 12-61-0 (water-soluble, immediate uptake)
- If your soil pH is above 7.5 — phosphorus availability drops significantly in alkaline conditions
- If soil tests already show high phosphorus levels — excess P can interfere with micronutrient uptake
- If you need a marine-sourced alternative — consider Fish Bone Meal 4-17-0
BONE MEAL CALCULATOR
SAFETY AND HANDLING
Personal Protective Equipment (PPE)
- Wear gloves when handling bone meal
- Avoid inhaling dust — use in well-ventilated areas or wear a dust mask
- Wash hands thoroughly after handling
Storage Guidelines
- Store in a cool, dry place in a sealed container
- Keep out of direct sunlight and away from heat sources
- Keep away from children and pets — the smell can attract animals
- Bone meal can absorb moisture; reseal bags tightly after use
Application Precautions
- Always mix bone meal thoroughly into soil — surface application attracts animals
- Water in well after application to help incorporate and reduce scent
- Consider using in fenced areas if pets or wildlife are a concern
- Do not exceed recommended application rates — phosphorus can accumulate in soil
- Most effective at soil pH ≤7.0; phosphorus becomes less available in alkaline soils
- Check soil test results before reapplying — phosphorus builds up over time
First Aid
- Eye contact: Flush with clean water for 15 minutes. Seek medical attention if irritation persists
- Skin contact: Wash affected area with soap and water
- Ingestion: Do not induce vomiting. Contact Poison Control (1-800-222-1222) or seek medical attention
- Inhalation: Move to fresh air. Seek medical attention if symptoms persist
Refer to the Safety Data Sheet (SDS) in the Documents section for complete safety information.
COMPARE WITH OTHER PHOSPHORUS SOURCES
| Feature | Bone Meal 3-15-0 | Rock Phosphate | Single Super (SSP) | Triple Super (TSP) | Blood Meal |
|---|---|---|---|---|---|
| Phosphorus (P₂O₅) | 15% | 3–5% | 16–20% | 44–46% | 1% |
| Calcium | 24% | 30% | 18–21% | 12–14% | 0% |
| Nitrogen | 3% | 0% | 0% | 0% | 13% |
| Sulfur | 0% | 0% | 11–12% | 1–2% | 0% |
| Release Speed | Slow (3–4 mo) | Very Slow | Fast | Fast | Fast |
| Organic | Yes | Yes | No | No | Yes |
| pH Effect | Minimal | Raises pH | Lowers pH | Lowers pH | Lowers pH |
COMPLETE YOUR SYSTEM
Build a complete organic garden nutrition program around bone meal's phosphorus and calcium foundation.
Blood Meal 13-0-0
Fast-acting organic nitrogen for leafy growth. Pairs perfectly with bone meal's phosphorus for balanced NPK.
EssentialPotassium Sulfate 0-0-53
Completes the NPK trio. Improves fruit quality, disease resistance, and drought tolerance.
OptionalChelated Iron EDTA
Corrects iron chlorosis (yellowing) in alkaline soils where bone meal may be less effective.
OptionalMAP 12-61-0
Water-soluble phosphorus for quick correction when bone meal's slow release isn't fast enough.
FREQUENTLY ASKED QUESTIONS
What is bone meal fertilizer best for?
Bone meal excels at promoting root development, flowering, and fruiting. It's ideal for bulbs (tulips, daffodils), transplants, root vegetables, and flowering plants like roses. The high phosphorus content (15%) triggers blooming while calcium (24%) strengthens cell walls and prevents disorders like blossom end rot in tomatoes. For a deeper look at why phosphorus matters, see our article on The Function of Phosphorus in Plants.
How long does bone meal last in soil?
Bone meal is a slow-release fertilizer that continues feeding plants for 3–4 months. One application at planting typically lasts an entire growing season. The nutrients become available gradually as soil microorganisms break down the organic material. Bone meal works faster in warm soils (≥50°F) with active microbial life.
Can bone meal burn plants?
Low risk of burn when used as directed. Its slow-release nature provides gentle, sustained nutrition. However, excessive amounts can raise phosphorus levels too high, potentially interfering with micronutrient uptake, so follow recommended rates and consider soil testing.
Is bone meal good for tomatoes?
Bone meal is excellent for tomatoes. The phosphorus promotes strong root systems and fruit development, while the 24% calcium content helps prevent blossom end rot. Apply 2 tablespoons in each planting hole at transplant time.
When should I apply bone meal?
Apply bone meal at planting time for best results. Mix it into the soil before planting or add to planting holes. For established plants, work it into the top 2 inches of soil in early spring as growth begins. Fall application works well for spring bulbs. For more on soil preparation timing, see The Organic Gardener's Guide to Soil Preparation.
Will bone meal attract animals?
Yes, the smell can attract dogs and wildlife. Always mix bone meal thoroughly into the soil and water in well after application. Store in sealed containers and consider using it in fenced areas if animals are a concern. Do not leave bone meal on the soil surface.
Will bone meal change my soil pH?
Bone meal has minimal effect on soil pH when used at recommended rates. However, the 24% calcium content can slightly raise pH in large applications. If you need calcium without raising pH, consider Gypsum (Calcium Sulfate) as a pH-neutral calcium source.
Does bone meal smell?
Bone meal has a mild, earthy scent that is noticeable when handling but much less pungent than blood meal or fish-based fertilizers. The smell fades quickly once worked into soil and watered in. Store in a sealed container to minimize odor.
Is bone meal safe around pets?
Bone meal is generally safe when incorporated into soil as directed. However, dogs in particular may be attracted to the smell and could dig it up or consume it directly from the bag. Large quantities consumed directly can cause digestive issues. Always mix bone meal into soil, water it in, and store bags out of reach of pets.
Can I use bone meal with other fertilizers?
Bone meal pairs well with most organic and conventional fertilizers. For a complete organic program, combine with Blood Meal 13-0-0 for nitrogen and Potassium Sulfate 0-0-53 for potassium. Learn more in our guide to Organic vs Synthetic Fertilizer: Key Differences and Tips.
GROW WITH CONFIDENCE
Product Quality
- Sourced from 100% organic, non-GMO bovine bone meal
- Consistent particle size for even application
- Tested for heavy metals and nutrient content accuracy
- Packaged at our facility in Madera, California, USA
90-Day Satisfaction Guarantee
Not satisfied with your purchase? Contact us within 90 days for a full refund or replacement. We stand behind every product we sell.
Expert Support
Our gardening experts are available to answer your questions about application rates, timing, and compatibility with other fertilizers. Reach us at questions@greenwaybiotech.com.
DOCUMENTS
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