Old Cobblers Farm™ Wicked Growth Shade Trees Fertilizer

Old Cobblers Farm Wicked Growth Shade Tree Fertilizer for Containers (20-10-10 NPK)

Fuel towering growth and dense foliage with Old Cobblers Farm Wicked Growth Shade Tree Fertilizer for Containers. Engineered with a powerful 20-10-10 NPK formula, this high-nitrogen blend drives vigorous canopy development, deep green leaves, and robust branch structure. Perfect for potted shade trees on patios, courtyards, or entryways, it supports long-term strength and graceful stature even in confined spaces.

Perfect For These Container-Grown Shade Trees

Formulated for large-leafed and broad-canopy trees grown in oversized pots or raised containers:

• Red Maple

• River Birch

• Tulip Tree (Liriodendron)

• American Sycamore

• Littleleaf Linden

• Hackberry

• Eastern Redbud

• Bald Cypress

• Hornbeam

• Weeping Willow

• Elm (dwarf and upright cultivars)

• Zelkova

• Catalpa

• Sassafras

• Sweetgum

• Kentucky Coffeetree

• Osage Orange

• Black Locust

How to Apply

Application Frequency

• Growing Season (Spring–Late Summer): Apply every 4–6 weeks

• Dormant Season (Fall–Winter): Reduce or pause applications

Recommended Quantity

• Small Containers (up to 5 gal): 1 tbsp

• Medium Containers (6–10 gal): 2 tbsp

• Large Containers (11–20 gal): 3 tbsp

• XL Containers (over 20 gal): ¼ cup

Steps to Apply

• Water First – Moisten soil thoroughly the day before application

• Apply Fertilizer – Sprinkle evenly, staying 2 inches away from the trunk

• Incorporate – Lightly mix fertilizer into the top inch of soil

• Water Again – Water deeply to release nutrients into the root zone

Optimal Soil Conditions

• Soil pH: 6.0 – 7.5 (slightly acidic to neutral)

• Soil Moisture: Keep soil consistently moist but well-drained

• Soil Type: Use a loamy, well-aerated mix with bark fines and compost

• Drainage: Ensure pots have open drainage holes to prevent saturation

• Environment: Best placed in dappled light or filtered shade with good air circulation

Pro Tip from the Farm:
Container shade trees need regular feeding to maintain healthy foliage density. Combine this fertilizer with seasonal pruning and mid-summer root zone aeration to help your trees thrive without outgrowing their pots.

Why Choose Old Cobblers Farm™ Wicked Growth Shade Trees Fertilizer?

Unlike generic plant foods, this formula is tailored specifically to the needs of broad-canopy and vertical-growing shade trees. Whether you’re caring for container-grown trees on a patio or young trees in larger landscape settings, this blend delivers targeted nutrition that keeps them thriving year after year.

Product Options

Available in 5 lb, 10 lb, 15 lb, and 20 lb bags, so you can choose the right size for your landscape project — from a single tree to a full row of plantings.