The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes
Best slow-release fertilizer for busy gardeners maintaining established trees and shrubs.
These spikes take the guesswork out of feeding by delivering a steady, season-long nutrient drip directly to the root zone. You trade the precision of liquid fertilizers for the sheer convenience of a hammer-and-forget application that actually works.
$23.95
at
NewEngland.com Store (Old Farmer's Store)
More Evergreen Tree & Shrub Fertilizer Spikes options
Who it's for
- Busy gardeners seeking a low-maintenance, set-it-and-forget-it feeding routine
- Eco-conscious growers aiming to reduce fertilizer runoff and waste
- Novice plant owners wanting foolproof, mess-free nutrient application
Who should skip it
- People needing rapid recovery for plants showing immediate nutrient stress
- Gardeners with rocky, compacted soil or limited physical strength
- Owners of mature trees with extensive, wide-reaching root systems
Performance breakdown
Application Convenience
The hammer-in design eliminates digging and simplifies seasonal feeding routines.
Nutrient Delivery
Slow-release formula ensures consistent growth without the risk of fertilizer burn.
Formula Balance
The 13-3-3 ratio provides a strong nitrogen boost for leafy development.
Soil Integration
TruSpike design penetrates most soil types with minimal physical effort.
Ingredient Quality
Reliable nutrient sources provide essential support but lack organic certification.
Seasonal Longevity
One application effectively sustains tree health throughout the entire growing season.
Key Specs
NPK Ratio
13-3-3
Package Weight
3.0 lbs
Release Type
Slow Release
Season of Use
All Season
Application Method
Spike
Water Soluble
No
Pet/Child Safe
No
Fertilizer Form
Spike
Nitrogen Percentage
13.0%
Phosphorus Percentage
3.0%
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