Old Cobblers Farm™ Wicked Organic Asparagus Fertilizer

Old Cobblers Farm™ Wicked Organics 4-6-4 Organic Asparagus Fertilizer — Strong Spears, Healthy Crowns, Lasting Beds

Keep your asparagus patch productive year after year with Old Cobblers Farm™ Wicked Organics 4-6-4 Asparagus Fertilizer — a specially balanced, slow-release organic formula designed for perennial asparagus beds. Whether you’re looking for “best fertilizer for asparagus spears,” “organic asparagus bed fertilizer for spring growth,” or “4-6-4 fertilizer for asparagus root strength,” this is built to feed your patch at the right times for strong spring emergence, lush summer fern growth, and long term vigour.

Nutrient Profile & Why It Matters

Total Nitrogen (N): 4.0%
 • 1.5% water-soluble nitrogen for early green-up of spears
 • 2.5% water-insoluble nitrogen to feed throughout the growing season without burning the crowns

Available Phosphate (P₂O₅): 6.0% — high phosphorus supports root systems and energy storage in the crowns, which is essential for strong spears and long term productivity.

Soluble Potash (K₂O): 4.0% — helps with stress tolerance (heat, drought), supports carbohydrate storage in crowns, and strengthens plant tissue during fern growth.

Why Asparagus Needs the Right Fertilizer

Asparagus is a permanent crop with shallow feeder roots and long lifespan. To maintain yield:

Annual fertilization is recommended to retain plant vigor, especially in established beds. 

The best time to feed asparagus is in early spring before spears emerge so that the crop has nutrients ready right when growth starts. 
 

A second feeding after harvest (summer or early fall) supports fern growth; the fern helps build carbohydrates that sustain the crowns for next season. 

Key Benefits You’ll Get

Stronger spear production with uniform, vigorous shoots in early spring

Improved root and crown health that supports longevity of the asparagus bed

Better fern / foliage growth after harvest, helping plants store energy for future seasons

Reduced risk of fertilizer burn or nutrient runoff thanks to slow-release nutrients and organic ingredients

More resilience to stress (heat, drought) and better continuity of harvest over many years

Application Guide & Tips

How much & when: Apply about 1 pound of fertilizer per 2 feet of row in early spring, just before spears begin to emerge. After the last harvest (late summer or early fall), reapply once ferns are growing again.

Placement: Broadcast evenly over the root zone — from the crown outward on each side of the row (usually about 2-3 feet each side). Remove mulch if present, then replace after applying and watering in.

Watering: Water after application to help move nutrients into the root zone. Moisture helps soil microbes break down the organic materials and release nutrients steadily.

Soil & pH: Asparagus prefers well-drained soil, medium texture, with pH in near neutral range (≈ 6.5-7.0) for optimum nutrient uptake. 

What’s Inside

Elemental Sulfur — helps with soil pH and plant metabolic processes

Animal Protein Meals & Vegetable Protein Meals — organic nitrogen sources, feeding both plants and soil biology

Natural Sulfate of Potash — solid form of potassium for stress tolerance and strength

Natural Nitrate of Soda — additional nitrogen for early green-up

Bone Char — contributing extra phosphorus and supporting root development

Why Choose Wicked Organics 4-6-4 Asparagus Fertilizer

If you want a fertilizer that’s tailored for asparagus bed maintenance, this formula gives you both immediate and long-term benefits — strong early spears, healthy fern growth, and crowns that stay productive for many years.