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Old Cobblers Farm™ Wicked Growth Roses Fertilizer

Product Overview

Description

Wicked Growth Rose Fertilizer is formulated specifically for the demanding nutritional needs of roses, delivering elevated phosphorus and potassium that fuel spectacular blooms, strong canes, and disease resistance. The 10-20-15 ratio provides the perfect balance for prize-winning blooms.

Roses are among the most nutrient-demanding ornamental plants, requiring generous feeding to support continuous flowering. The double phosphorus level triggers abundant bud formation, while elevated potassium strengthens canes and improves resistance against black spot, powdery mildew, and rust.

Whether growing hybrid teas for exhibition, floribundas for landscape color, climbing roses on an arbor, or shrub roses for low-maintenance beauty, this formula delivers the nutrition roses need.

Highlights

• High phosphorus bloom formula
• Strong cane development
• Disease resistance support
• Continuous flowering power
• All rose type compatible

The Science Behind It

How It Works

This rose-specific formula provides the nutrient balance roses need for abundant blooms, strong canes, and disease resistance. Elevated phosphorus (20%) drives prolific flower production, while moderate nitrogen (10%) supports healthy foliage without excessive soft growth vulnerable to disease. High potassium (15%) strengthens cell walls against fungal infection and improves bloom quality. Applied throughout the growing season, this formula supports continuous flowering in repeat-blooming varieties.

The Science

Roses are heavy feeders with specific nutrient demands. The high phosphorus concentration supports the energy-intensive process of producing multiple bloom cycles. Phosphorus drives ATP production required for rapid cell division in developing flower buds. Potassium activates enzymes involved in the synthesis of anthocyanins (red pigments) and other compounds that give rose petals their color and fragrance. The ratio also builds resistance to common rose diseases like black spot and powdery mildew.

Nutrients Available 

10% Total Nitrogen – Maintains healthy cane and leaf growth without promoting disease-susceptible soft tissue. 20% Available Phosphate (P₂O₅) – Maximizes flower bud formation and bloom production. 15% Soluble Potash (K₂O) – Enhances bloom color, fragrance, disease resistance, and overall plant vigor. Formulated for hybrid teas, floribundas, climbers, and all rose varieties.

How to Apply

1-2 lbs/100 sq ft every 4-6 weeks. Severe deficiency: 2-3 lbs initially.

1

Action:

Survey garden bed and note deficiency symptoms. Map high-need zones.

Pro Tip:

Sandy areas and fruiting sections need more K than shaded areas.

Avoid:

Don't leave granules on surface in hot weather - damages plants.

2

Action:

Calculate 1-2 lbs per 100 sq ft. For 10x20 garden (200 sq ft), use 2-4 lbs.

Pro Tip:

Weigh fertilizer on kitchen scale. One cup 0-0-60 weighs ~0.5 lb.

Avoid:

Don't exceed 2 lbs per 100 sq ft per application. Split heavy doses.

3

Action

Broadcast granules evenly across soil surface. Work into top 2-3 inches with cultivator.

Pro Tip:

Sandy areas and fruiting sections need more K than shaded areas.

Avoid:

Don't spread on windy days - granules drift causing uneven application.

4

Action

Water thoroughly with 1-2 inches to dissolve granules and move K into root zone.

Pro Tip:

Incorporation prevents salt buildup and gets K to roots faster.

Avoid:

Don't leave granules on surface in hot weather - damages plants.

Key Benefits

Maximum Bloom Production – Double phosphorus content fuels continuous flower bud formation for abundant blooms from spring through fall.

Strong Cane Development – Balanced nitrogen promotes sturdy, upright canes that support heavy bloom loads without staking.

Disease Resistance Enhancement – Elevated potassium strengthens cell walls and activates plant defense mechanisms against fungal diseases.

Improved Flower Quality – Complete nutrition produces larger blooms with deeper colors, stronger fragrance, and excellent vase life.

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