Question 1

What is nutrient composition? Nitrogen, potassium, etc?

Accepted Answer

Nitrogen, phosphate, potash, 16-4-4

Question 2

I have a small Japanese Maple and 10 young tea olives that I want to use the spikes to fertilize. How many per tree would be enough trough spring and

Accepted Answer

It depends on the diameter (i.e., trunk width at 1 ft from grade) of the trees.  If 1-2 inches, then plan on 2 spikes per tree.  Above 2 inches, its basically 1 spike per inch diameter.

Question 3

We have a 25 year old (40ft) maple tree in tx that doesnt look healthy. Will this product work? How should we use it? Thank you

Accepted Answer

Your maple needs iron like someone else posted. So no, this product is not enough because you need the IRON!

Try this product from Jobes: Ross® Green Again Iron Formula Root Feeder Refills

Make sure your trees are healthy and green all season long with Ross® Root Feeder Refills Green Again® with Iron. Chlorosis, a yellowing of the leaves with green veins, is caused by a lack of iron in your plant’s diet. Use refills in your Ross® Root Feeder to get the perfect balance of nutrients directly to plants’ roots - while watering. These refills are a special formula of fertilizer plus iron for plants suffering from yellow-leaf iron deficiency. Apply when first symptoms appear or to prevent deficiency if chlorosis has been a problem previously. Ross® pre-measured refills make for fast, easy and mess-free fertilizing.

Question 4

is this Spike for Dogwood Trees?

Accepted Answer

I do not know about dogwood trees.  I have used this spike on my Hickory tree, Ash tree, Maple tree and Spruce tree.  They have all done well. Grew larger with many leaves.  I am not a 'gardener' but person who uses fertilizer on my lawn, shrubs, flowers and trees.  Dogwood is a deciduous tree and I would think that these spikes would not harm it -- as I have used it with my deciduous trees.

ASIN	B000HACFSI
Application Method	Insert around the drainage line of the tree.
Brand Name	Jobe's Organics
Coverage	medium /
Customer Reviews	4.6 4.6 out of 5 stars (9,673)
Item Form	Sticks
Item Weight	12 Ounces
Liquid Volume	1 Liters
Mixing Ratio	16-4-4
Model Number	01660
Number of Items	1
Number of Packs	15
Part Number	01660
Specific Uses For Product	Trees and Shrubs
Target Species	Trees & Shrubs
UPC	073035016100
Unit Count	1.0 Count

Jobe's 01660 1610 0 Tree Fertilizer Spikes (16-4-4,15)

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