Ground Shrub Fertilizer for Cold-Hardy Plants

🌲 Old Cobblers Farm™ Wicked Plant Growth Ground Shrub Fertilizer for Cold-Hardy Plants (5-10-10 NPK) ❄️

Tough climates demand tough roots. Old Cobblers Farm™ Wicked Plant Growth Ground Shrub Fertilizer for Cold-Hardy Plants is specifically crafted with a 5-10-10 NPK ratio to support strong root development, hardy structure, and vibrant bloom production. With high phosphorus and potassium, this formula is ideal for shrubs in colder zones that need resilience and vitality across all seasons.

🌿 Perfect For These Cold-Hardy Shrubs & Foundation Plants

Designed for durable shrubs that thrive in zones with freezing temps and heavy winters:

• Rhododendron

• Azalea

• Boxwood (Buxus spp.)

• Holly (Ilex spp.)

• Juniper (Juniperus spp.)

• Arborvitae (Thuja occidentalis)

• Hydrangea (Hydrangea macrophylla)

• Lilac (Syringa vulgaris)

• Forsythia

• Spirea (Spiraea spp.)

• Dogwood Shrub (Cornus sericea)

• Elderberry (Sambucus spp.)

• Viburnum

• Mock Orange (Philadelphus coronarius)

• Ninebark (Physocarpus opulifolius)

• Deutzia

• Weigela

• Winterberry (Ilex verticillata)

• Beautyberry (Callicarpa americana)

• Kerria Japonica

🧪 How to Apply

Application Frequency

• Early Spring: Apply at the first sign of new leaf buds

• Mid-Summer: Reapply after flowering to promote steady development

• Late Fall: Final application after first frost to help with overwintering

Recommended Quantity

• Small Shrubs (up to 3 ft): 1 cup per plant

• Medium Shrubs (3–6 ft): 2 cups per plant

• Large Shrubs (6+ ft): 3 cups per plant

Steps to Apply

• Prepare the Base: Clear mulch and debris from around the base of the shrub

• Spread Evenly: Sprinkle fertilizer in a circle around the drip line—not at the stem

• Incorporate Lightly: Rake into the top layer of soil (1–2 inches)

• Water Thoroughly: Use a hose or watering can to activate the nutrients

• Replace Mulch: Re-cover the area to help retain moisture and regulate temperature

🌍 Ideal Soil Conditions

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

• Soil Type: Well-draining loam (balanced mix of sand, silt, and clay)

• Moisture: Evenly moist—avoid waterlogged soil, especially in winter

• Organic Matter: Incorporate compost or aged manure to support microbial activity and nutrient availability

• Drainage: Improve clay-heavy soil with pine bark or sand; boost sandy soils with compost for retention

Pro Tip from the Farm:
Cold-hardy doesn’t mean “set it and forget it.” Feed your shrubs in fall before frost sets in to promote deep root anchoring—critical for surviving winter heave and spring thaw.