jobes tree spikes
Matthew Wilson
Updated on July 01, 2026
They are actually designed to be hammered into the ground. Although fertilizer spike manufacturers may claim that the spikes take the guesswork out of fertilizing, that claim is true only up to a point. The spikes work, but you still have to calculate how much fertilizer to use for your specific plants.
How many fertilizer spikes do you need for a tree?
No wasteful runoff, no mess, hazards or smells.
Spikes should be placed along the tree’s dripline. Number of Spikes Needed per Tree: For one to two inches of trunk diameter, use two tree spikes. Number of Spikes Needed per Shrub: use one spike per three feet of height.
Are fertilizer spikes good for trees?
Also, the high concentration of chemicals within the fertilizer spike can burn your plants and trees, leading to tree damage or tree death. Most importantly, tree fertilizer spikes inserted around a tree base leave your tree much more vulnerable to infestation from insects or tree diseases.
When should I use Jobe’s Evergreen fertilizer Spikes?
Spikes are specially formulated for acid-loving Evergreen trees and shrubs. For best results, use Jobes Fertilizer Spikes for Trees and Shrubs in early spring and late fall.
Can you break up fertilizer spikes?
The disadvantage of fertilizer spikes is they only get to the roots immediately surrounding the spike. If you currently have fertilizer spikes, simply crumble them and spread them under the canopy of the tree or shrub.
Can I use Jobe’s Fertilizer Spikes?
Jobe’s Spikes are easy to insert around each tree’s dripline, and the slow-release formula lasts all season. No wasteful runoff, no mess, hazards or smells – only a safe beautiful yard. For best results, use Jobe’s Fertilizer Spikes for Trees & Shrubs in early spring and late fall.
Should I use Jobe’s Fertilizer Spikes?
Fertilizer spikes are a lot easier to handle and store than bags of granular fertilizer. Using fertilizer sticks can stimulate biological activity in the soil, which promotes pest and disease resistance. Over-fertilization isn’t as likely as it is with granular or liquid fertilizers.
How do you apply Jobe’s tree spikes?
Using spikes designed for your specific type of plant, place them in soft, damp soil around its drip line. This line is the area below its circumference, so rain or condensation will fall where the spikes are placed and promote root growth towards the fertilizer.
What is the best time to fertilize trees?
Trees and shrubs should be fertilized in early spring, and a light fertilizer application can be made in early summer if conditions are conducive to plant growth (that is, reasonable temperatures and soil moisture). Avoid fertilizing trees and shrubs stressed by drought during the summer months.
What is the best tree fertilizer?
Best Fertilizers for Growing Trees and Shrubs – Top Picks
Miracle-Gro Tree & Shrub Plant Food Spikes. Scotts Evergreen Flowering Tree & Shrub Continuous Release Plant Food. Miracle-Gro Shake’ N Feed Flowering Trees and Shrubs Continuous Release Plant Food. Osmocote Smart-Release Plant Food Plus Outdoor & Indoor.
What is the purpose of tree spiking?
It is used to prevent logging by risking damage to saws, in the forest or at the mill, if the tree is cut, as well as possible injury or death to the worker.
Do evergreens need nitrogen?
In general, evergreens need 2 to 4 pounds of nitrogen per 1,000 square feet of soil surface every two to four years to maintain growth. Mature or slow-growing evergreens require about 1 pound of nitrogen for every 1,000 square feet of soil surface every two to four years.
Does tree spiking hurt trees?
Spiking (spurring, hooking, gaffing, etc) up a live tree causes multiple injuries to the phloem, cambium and xylem and destroys the tree’s own protection against outside invaders, such as insects and other pathogens.
How often use Jobe’s fertilizer Spikes?
In general, you will need to add new spikes every two months during the plant’s growing season. However, be sure to take into account the needs of your houseplant. Some plants need minimal fertilizer, while others may be heavy feeders and require more frequent fertilization. Avoid fertilizing dormant plants.