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In Ground Tree Fertilizer for Cold-Hardy Trees

Price

$37.99

🌲 Old Cobblers Farmā„¢ Wicked Plant Growth In-Ground Tree Fertilizer for Cold-Hardy Trees (5-10-10 NPK) ā„ļø

When your trees face freezing winters and tough conditions, give them the strong start they need with Old Cobblers Farmā„¢ Wicked Plant Growth In-Ground Tree Fertilizer for Cold-Hardy Trees. Our expertly balanced 5-10-10 formula delivers essential phosphorus and potassium to strengthen root systems and enhance stress resistance, helping your trees endure and thrive through the harshest seasons.

🌳 Best Trees to Use This Fertilizer With

Formulated for trees that need added resilience and strong roots in cooler climates:

  • Sugar Maple (Acer saccharum)

  • Red Maple (Acer rubrum)

  • Norway Spruce (Picea abies)

  • White Spruce (Picea glauca)

  • Eastern White Pine (Pinus strobus)

  • Douglas Fir (Pseudotsuga menziesii)

  • Blue Spruce (Picea pungens)

  • American Beech (Fagus grandifolia)

  • Northern Red Oak (Quercus rubra)

  • White Oak (Quercus alba)

  • Black Walnut (Juglans nigra)

  • American Linden (Tilia americana)

  • Paper Birch (Betula papyrifera)

  • Quaking Aspen (Populus tremuloides)

  • Balsam Fir (Abies balsamea)

  • Eastern Hemlock (Tsuga canadensis)

  • Red Pine (Pinus resinosa)

  • Hackberry (Celtis occidentalis)

  • Shagbark Hickory (Carya ovata)

  • Tamarack (Larix laricina)

🧪 How to Apply

Application Frequency

  • Spring: Apply in early spring as the ground thaws and before new growth begins

  • Fall: Apply again in early fall, 6–8 weeks before the first frost

Recommended Quantity

  • Young Trees (1–3 years old): ¼ lb per inch of trunk diameter (measured at 4.5 ft height)

  • Mature Trees (4+ years): ½ lb per inch of trunk diameter

Steps to Apply

  • Measure Tree Diameter: Use measuring tape at chest height (4.5 ft)

  • Clear Base Area: Remove grass, weeds, and debris from the root zone

  • Loosen Soil: Use a garden fork or trowel to aerate the soil around the drip line

  • Spread Fertilizer: Apply evenly around the drip line—not against the trunk

  • Water Thoroughly: Activate nutrients and help them reach the roots

šŸŒ Optimal Soil Conditions

  • Soil pH: 6.0–7.0 (slightly acidic to neutral)

  • Moisture: Moist but well-drained—never soggy or waterlogged

  • Soil Type: Loamy soil is best; amend sandy soils with compost, and clay soils with organic matter and sand

  • Organic Matter: Enrich with compost or aged manure to improve nutrient retention and microbial health

  • Preparation: Remove debris, loosen the soil, and prepare for even distribution of nutrients

  • Temperature: Apply when soil is above 50°F for optimal nutrient uptake

Pro Tip from the Farm:
Cold-hardy trees need strong roots to survive harsh winters—don’t skip the fall feeding. It’s the secret to a healthier spring flush and stronger, more resilient growth year after year.

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