Asparagus Fertilizer Guide

Recommended Application Rate (per sqft, per plant, per gallon of water)

Asparagus Fertilizer with an NPK ratio of 16-10-13 provides a balanced nutrient supply with higher nitrogen to support vigorous spear and fern growth in asparagus. Application rates should be tailored to soil conditions and plant needs, guided by soil tests. Below is a detailed guide:

Application Rate per Square Foot

1. Pre-Planting (Establishment Year):

   • Rate: Apply 0.5 to 1 pound per 100 square feet (0.005 to 0.01 pounds or 0.08 to 0.16 ounces per square foot).

   • Method: Incorporate into the top 6-8 inches of soil before planting crowns to ensure nutrient availability. Water thoroughly post-application.

2. Established Beds (2+ Years):

   • Rate: Apply 0.25 to 0.5 pounds per 100 square feet.

   • Method: Broadcast evenly in early spring as spears emerge and post-harvest to support fern growth. Lightly incorporate into soil and water well.

Application Rate per Plant

1. Individual Plant Application:

   • Rate: Use 1 to 2 teaspoons (approximately 0.1 to 0.2 ounces) per plant.

   • Method: Sprinkle evenly 4-6 inches around the base, avoiding stem contact to prevent burn. Lightly incorporate into soil with a hand cultivator and water thoroughly.

Application Rate per Gallon of Water

1. Liquid Feeding:

   • Rate: Dissolve 1 tablespoon (approximately 0.5 ounces) per gallon of water.

   • Method: Apply to the soil around the base of plants every 2-4 weeks during active growth, especially in early spring or post-harvest. Avoid foliar application to prevent leaf burn.

Additional Tips

• Soil Testing: Test soil pH (ideal: 6.5-7.5) and nutrient levels to adjust rates and avoid over-fertilization.

• Watering: Water thoroughly after granular applications to dissolve nutrients and prevent burn.

• Mulching: Apply mulch to retain moisture and reduce nutrient runoff.

• Safety: Wear gloves and wash hands after handling to avoid irritation.

These guidelines ensure robust asparagus growth while minimizing environmental impact.

How often should Asparagus Fertilizer (16-10-13) be applied throughout the growing season?

Asparagus Fertilizer (16-10-13) should be applied as follows:

1. Early Spring (Pre-Spear Emergence): Apply as soil becomes workable to support initial spear production.

2. Post-Harvest (Late Spring/Early Summer): Apply after the 6-8 week harvest period to promote fern growth and root energy storage.

3. Late Summer (Optional): Apply a light dose if soil tests indicate nutrient depletion or plants show deficiency (e.g., yellowing ferns), typically at half the spring rate.

Typically, 2-3 applications per season suffice. Use soil tests and manufacturer guidelines to adjust frequency, ensuring moist soil during application.

Does the Application Rate of Asparagus Fertilizer (16-10-13) change between established plants and seedlings?

Yes, application rates differ due to varying nutrient needs:

1. Seedlings (First Year): Apply 1/2 to 1 teaspoon (0.05-0.1 ounces) per plant, scattered 4-6 inches from the base and lightly incorporated to avoid burn to delicate roots.

2. Established Plants (2+ Years): Use 1-2 teaspoons (0.1-0.2 ounces) per plant, applied around the drip line to support robust spear and fern growth.

Soil tests ensure precise rates, preventing over-fertilization in seedlings.

What is the Best Time of Year or Season to apply Asparagus Fertilizer (16-10-13)?

The best times to apply Asparagus Fertilizer (16-10-13) are:

1. Early Spring: Apply as spears emerge to support growth and spear production.

2. Post-Harvest (Late Spring/Early Summer): Apply after harvest to promote fern growth and energy storage for the next season.

Avoid application during late fall or winter dormancy to prevent nutrient runoff.

Should Asparagus Fertilizer (16-10-13) be applied before planting, at planting, or during active growth?

Asparagus Fertilizer (16-10-13) is best applied as follows:

1. Before Planting: Incorporate 0.5-1 pound per 100 square feet into the top 6-8 inches of soil 2-4 weeks before planting crowns to enrich soil.

2. At Planting: Apply 1/2 teaspoon per crown in the planting trench, mixed with soil to avoid direct contact and prevent burn.

3. During Active Growth: Apply 0.25-0.5 pounds per 100 square feet in early spring and post-harvest as a side-dress, avoiding root disturbance.

Water thoroughly after application to enhance nutrient uptake.

Should the application of Asparagus Fertilizer (16-10-13) be timed around flowering, fruiting, or dormancy stages?

Timing applications enhances effectiveness:

1. Early Spring (Pre-Spear Emergence): Apply to support spear growth and early vegetative development.

2. Post-Harvest (Early Summer): Apply to promote fern growth, essential for photosynthesis and energy storage.

3. Avoid Dormancy: Do not apply during fall/winter dormancy, as nutrient uptake is minimal, risking runoff.

Focus on active growth stages, guided by soil tests and plant condition.

Should Asparagus Fertilizer (16-10-13) be applied before or after rain or irrigation?

Timing with rain or irrigation optimizes nutrient uptake:

1. Before Light Rain/Irrigation: Apply before light rain or irrigation to dissolve nutrients and aid root absorption. Avoid heavy rain to prevent runoff.

2. After Rain/Irrigation: Apply to moist soil for better nutrient distribution, avoiding waterlogged conditions.

3. Avoid During Heavy Rain: Do not apply before heavy rain to minimize nutrient loss and environmental impact.

Check weather forecasts and irrigate lightly post-application if needed.

Should Asparagus Fertilizer (16-10-13) be applied as a topdress, side-dress, soil incorporation, or foliar spray?

Asparagus Fertilizer (16-10-13) is best applied as follows:

1. Side-Dress: Apply in a band 6-8 inches from plant bases in a 2-3 inch deep trench during active growth. Cover with soil and water well.

2. Topdress: Spread evenly over the soil surface in early spring or post-harvest, followed by light incorporation and watering.

3. Soil Incorporation: Mix into the top 6-8 inches before planting for uniform nutrient distribution.

4. Foliar Spray (Not Recommended): Avoid due to high nutrient concentration risking leaf burn.

Side-dressing and topdressing are most effective for established beds; follow manufacturer guidelines.

Does Asparagus Fertilizer (16-10-13) need to be watered in after application?

Yes, Asparagus Fertilizer (16-10-13) should be watered in after application. Watering dissolves granules, facilitates nutrient uptake, prevents volatilization (especially nitrogen), and reduces burn risk. Use light irrigation to maintain moist, not waterlogged, soil conditions.

Can Asparagus Fertilizer (16-10-13) be mixed with other fertilizers or amendments?

Asparagus Fertilizer (16-10-13) can be mixed with other products, following best practices:

1. Soil Testing: Test soil to identify nutrient deficiencies and guide supplementation.

2. Complementary Nutrients: Add micronutrients (e.g., magnesium, calcium) or organic matter (e.g., compost) if needed.

3. Avoid Over-Fertilization: Follow combined application rates to prevent toxicity.

4. Compatibility Check: Test for chemical reactions before mixing large quantities.

5. pH Adjustment: Use lime or sulfur to maintain soil pH (6.5-7.5), applying separately to avoid nutrient lock-up.

6. Timing: Coordinate applications for optimal nutrient availability.

7. Monitor Plant Health: Observe for deficiency or toxicity signs.

These steps ensure balanced nutrition and soil health.

Is Asparagus Fertilizer (16-10-13) suitable for use in drip irrigation or fertigation systems?

Asparagus Fertilizer (16-10-13) may be suitable for drip irrigation or fertigation if water-soluble:

1. Solubility: Confirm complete dissolution (e.g., 1 tablespoon per gallon) to prevent clogging.

2. Filtration: Use a fine filter to catch undissolved particles.

3. Compatibility: Check system compatibility to avoid precipitation or damage.

4. Concentration: Follow manufacturer dilution rates for safe application.

5. pH Monitoring: Maintain soil pH (6.5-7.5) for nutrient availability.

6. System Maintenance: Clean lines regularly to prevent blockages.

Verify solubility with the manufacturer and test on a small scale.

Is Asparagus Fertilizer (16-10-13) a slow-release product, or does it require frequent applications?

Asparagus Fertilizer (16-10-13) is typically a quick-release fertilizer unless labeled as slow-release. Quick-release formulations require 2-3 applications every 4-6 weeks during the growing season. Check the product label for release type and follow manufacturer guidelines for frequency, using soil tests to avoid over-application.

Is Asparagus Fertilizer (16-10-13) safe for all plants, or is it crop-specific?

Asparagus Fertilizer (16-10-13) is optimized for asparagus but can be used for other plants:

1. General Use: Suitable for vegetables with high nitrogen needs (e.g., leafy greens, corn), supporting foliage and growth.

2. Crop-Specific Needs: Less suitable for plants requiring high phosphorus (e.g., flowering crops) or low nitrogen (e.g., succulents).

3. Soil Conditions: Test soil pH (ideal: 6.5-7.5) and nutrient levels to tailor applications.

Use soil tests to match fertilizer to plant needs, avoiding over-fertilization.

Can Asparagus Fertilizer (16-10-13) cause fertilizer burn if overapplied?

Yes, Asparagus Fertilizer (16-10-13) can cause fertilizer burn if overapplied due to its high nitrogen content. Precautions include:

1. Follow Recommended Rates: Apply 0.25-0.5 pounds per 100 square feet or 1-2 teaspoons per plant.

2. Soil Testing: Confirm nutrient needs to avoid excess application.

3. Even Distribution: Spread uniformly to prevent concentrated patches.

4. Water Thoroughly: Irrigate post-application to dilute nutrients.

5. Avoid Foliage Contact: Keep fertilizer off leaves to prevent burn.

6. Monitor Plants: Check for burn signs (e.g., yellowing, wilting) and adjust practices.

These steps minimize burn risk and promote healthy growth.

Are there any sensitive plants that should not receive Asparagus Fertilizer (16-10-13)?

Certain plants are sensitive to Asparagus Fertilizer (16-10-13):

1. Low-Nitrogen Plants (e.g., legumes): High nitrogen disrupts nitrogen fixation, reducing yields.

2. Phosphorus-Sensitive Plants (e.g., Australian natives like Grevilleas): Excess phosphorus causes nutrient imbalances.

3. Acid-Loving Plants (e.g., blueberries, azaleas): May tolerate low doses but risk pH disruption.

4. Young Seedlings: Sensitive to high nutrient concentrations, risking burn.

5. Succulents/Cacti: Excess nitrogen promotes weak growth.

Use soil tests to avoid harm to sensitive plants.

Does Asparagus Fertilizer (16-10-13) interact negatively with pesticides, herbicides, or other products?

Asparagus Fertilizer (16-10-13) is generally compatible, but precautions ensure safe use:

1. Timing: Space out fertilizer and pesticide/herbicide applications to maintain efficacy.

2. Compatibility Check: Test for adverse reactions before mixing.

3. Soil pH: Monitor pH (6.5-7.5), as changes may affect pesticide performance.

4. Label Instructions: Follow all product guidelines for compatibility.

5. Test Small Areas: Apply combinations on a small scale to observe effects.

Consult an agronomist for tailored advice.

Is Asparagus Fertilizer (16-10-13) safe for pets, kids, and pollinators?

Asparagus Fertilizer (16-10-13) requires careful handling:

Safety Considerations for Pets and Kids:

1. Ingestion Risk: Store securely to prevent ingestion, which may cause gastrointestinal upset.

2. Skin/Eye Irritation: Wear gloves and avoid dust; wash hands after handling.

3. Application Timing: Apply when pets/kids are absent and water in before access.

Safety Considerations for Pollinators:

1. Non-Toxic: No direct harm to bees or butterflies, as it lacks pesticides.

2. Runoff Prevention: Avoid runoff to protect aquatic ecosystems.

3. Application Method: Incorporate into soil to minimize pollinator exposure.

Follow label instructions and water thoroughly post-application.

Does soil pH affect the effectiveness of Asparagus Fertilizer (16-10-13)?

Yes, soil pH affects Asparagus Fertilizer (16-10-13) effectiveness:

1. Optimal Range (pH 6.5-7.5): Ensures nutrient availability for asparagus.

2. Acidic Soils (pH <6.5): May limit phosphorus and potassium uptake.

3. Alkaline Soils (pH >7.5): Can reduce nutrient solubility.

4. Soil Testing: Test pH and nutrient levels before application to adjust with lime (to raise) or sulfur (to lower).

Maintain optimal pH for effective nutrient uptake.

Does Asparagus Fertilizer (16-10-13) leach easily or pose a runoff risk?

Asparagus Fertilizer (16-10-13) has leaching and runoff risks:

1. Nitrogen (16%): Highly soluble, prone to leaching in sandy soils or heavy rain.

2. Phosphorus (10%): Less mobile but risks runoff if not incorporated, potentially causing eutrophication.

3. Potassium (13%): Moderately mobile, with some leaching risk.

Minimize risks by incorporating into soil, applying in split doses, avoiding heavy rain, and using mulch to reduce erosion.

Is Asparagus Fertilizer (16-10-13) OMRI-listed or certified organic?

Asparagus Fertilizer (16-10-13) is typically synthetic and not OMRI-listed or certified organic unless specified. Synthetic NPK blends use inorganic compounds, unlike organic standards requiring natural sources. Check the product label or OMRI database for certification status.

What key nutrients does Asparagus Fertilizer (16-10-13) supply?

Asparagus Fertilizer (16-10-13) supplies:

Macronutrients:

1. Nitrogen (16%): Promotes leafy growth and vigor.

2. Phosphorus (10%): Supports root development and spear production.

3. Potassium (13%): Enhances disease resistance and stress tolerance.

Micronutrients (varies by brand):

• Calcium, magnesium, sulfur, iron, manganese, zinc, copper, boron, molybdenum (check label for specifics).

Consult the product label for exact nutrient content.

Is Asparagus Fertilizer (16-10-13) formulated for root growth, flowering, fruiting, or general plant health?

Asparagus Fertilizer (16-10-13) is formulated for general plant health, with emphasis on vegetative growth due to high nitrogen. Nitrogen supports fern growth, phosphorus aids root and spear development, and potassium enhances vigor. Soil tests ensure optimal use.

Does Asparagus Fertilizer (16-10-13) contain bio-stimulants, mycorrhizae, or beneficial microbes?

Asparagus Fertilizer (16-10-13) typically focuses on NPK, with bio-stimulants, mycorrhizae, or microbes dependent on the brand. These additives enhance nutrient uptake and soil health. Check the product label for specifics, as they’re not standard in synthetic fertilizers.

How should Asparagus Fertilizer (16-10-13) be stored?

Store Asparagus Fertilizer (16-10-13) as follows:

1. Dry Environment: Prevent clumping by storing in low-humidity conditions.

2. Cool Temperature: Keep between 40°F and 80°F (4°C and 27°C).

3. Sealed Containers: Use airtight packaging to avoid moisture and contamination.

4. Away from Sunlight: Prevent nutrient degradation from UV exposure.

5. Off the Ground: Store on shelves/pallets to avoid dampness.

6. Ventilated Area: Ensure airflow to prevent fume buildup.

7. Away from Children and Pets: Secure to prevent accidental exposure.

8. Separate from Chemicals: Avoid reactive substances.

Proper storage maintains efficacy.

What is the typical shelf life of Asparagus Fertilizer (16-10-13)?

Asparagus Fertilizer (16-10-13) lasts 5-10 years if stored in cool, dry conditions. Moisture can cause clumping, reducing effectiveness. Check for physical changes before use; test on a small area if stored long-term.

Does Asparagus Fertilizer (16-10-13) require special handling (humidity sensitivity, corrosiveness)?

Asparagus Fertilizer (16-10-13) requires careful handling:

1. Humidity Sensitivity: Store in dry conditions to prevent clumping or dissolution.

2. Corrosiveness: Mildly corrosive to metals if moist; use plastic containers.

3. Safety Precautions: Wear gloves, eyewear, and mask to avoid irritation.

4. Environmental Care: Apply to avoid runoff into water bodies.

Follow label instructions for safe and effective use.