TREES AND SHRUBS NEVER.. EVER.. NEED FERTILIZER .. OR STIMULIZER ..... UNLESS A SOIL TEST INDICATES SOMETHING IS LACKING IN THE SOIL ...

just send me the money.. and you shrubs will be the same next year.. with or without the application ...

ken

PS: if they are near a lawn that is fertilized.. then they get what they need ...

PPS: if there is nothing wrong with the plants.. why would you now begin to solve a problem that doesnt exist ...

PPPS: i smell snake oil ...

Such treatments can be very valuable if your soil is compacted, or poor top soil brought in from a borrow pit somewhere (often the case in construction).

I've seen very good responses just from treatments with plain water (no additives). A good piece of equipment can infiltrate the soil with lots of oxygenated water, a real boost for root systems and rhizospheres.

Personally, I'd find out a little bit more about the ingredients of the 'root stimulator'. And let us know more about the condition of your soil.

The soil is slightly compacted as its higher in clay content.

I don't plan to use fertilizer, just the root stimulant to help the plant establish quicker.

 Vitamin B-1, aka thiamine, does not reduce transplant shock or stimulate new root growth on
plants outside the laboratory
 A nitrogen fertilizer is adequate for transplanting landscape plants; avoid use of "transplant
fertilizers" that contain phosphate
 Healthy plants will synthesize their own thiamine supply
 Healthy soils contain beneficial microbes that synthesize thiamine as well
 Difficult-to-transplant species may be aided by application of auxin-containing products in
addition to nitrogen, but read the label and donÂt add unnecessary and potentially harmful
chemicals (this includes organics!)
 Adequate soil moisture is crucial for new root growth; be sure to irrigate new transplants
frequently and use mulch to reduce evaporation

Here is a link that might be useful: The Myth of Vitamin Stimulants