Even in the middle of the city, your trees can enjoy at least 7 years on fertile ground.

A TFI-treatment can do it!

Your trees can grow deeper roots so they no longer push up beneath the pavement.

A TFI-treatment can do it!

Your trees are resistant to diseases and pests. Now with aphid warranty: An 80% infestation reduction!

A TFI-treatment can do it!

Even after a heavy rainstorm your land is quickly passable again, thanks to optimal rainwater drainage.

A TFI-treatment can do it!

How the TFI method® works

TFI stands for Tree Fertilizer Injector. By creating new pores through soil layers and filling them with our specially developed substrate, we encourage the development of a natural soil structure and a healthy soil.

We carefully insert a lance into the soil.

We create a network of interconnected cracks in the soil.

We fill the cracks with a natural soil substrate.

The result: optimal root growth and rainwater infiltration.

The TFI method® can be used anywhere, from outdoor areas or parks to the heart of the city. Also for larger trees stands!

Choose TFI now

Maximum results
• Long-lasting effect: 7 to 10 years!
• Fertile soil and healthy trees
• No problems with pests or shallow root growth
• Improved irrigation and drainage

Minimal disruption during treatment
• Pavers or concrete can remain in place
• No soil excavation, no impact on surrounding environment
• Environmentally friendly
• Can be used year-round

Customer Testimonials

Ad van der Venn

“In our town there are 18 linden trees that, for 10 years, have experienced stagnant growth. We were about to replace them in 2013 when TFI4000 advised us to give their habitat improvement method a chance. The response of the trees to the TFI method was really impressive. The trees suddenly grew so well that after one season the frost / burn from recent years was almost completely overgrown. Also this year, the trees are developing further and they look beautiful.
Thanks to the TFI method, these trees are not only no longer slated to be replaced, but they are a solid foundation for a beautiful new avenue. ”

Ad van der VennPolicy Officer @ municipality Haaren
Paul Hollander

“In 2012, Brunssum used TFI to improve the habitat of 14 monumental sycamores. The first year, there were few noticeable effects from the habitat improvement. However, last year, as promised, the effects were clearly visible!
The trees have better leaf coverage and a beautiful color. In the past year they have had significantly fewer issues with Massaria and Gnomonia “leaf spot disease” and this has resulted in less maintenance.
In a stand of lime trees that we have also had treated against aphids by TFI, we have experienced good results and no more nuisance complaints from the residents. ”

Paul HollanderTree Administrator @ municipality Brunssum
Benco Schans

“This morning I understood from my colleague in the field that, through the use of the TFI method conducted three weeks ago, both the cemetery in Zeewolde and the trees along the Quartermaster Hitting have seen a positive moisture effect.
In the areas where the TFI method was applied there is either less water than expected or no water at all on the surface. It also rained in Zeewolde yesterday and Friday a lot!! We continue to follow it.”

Benco SchansPolicy Officer Culture Technology @ municipality Zeewolde
Henk Nieuwerth

“We had in the past many louse infestations in some linden trees on the Brink in Den Ham. In 2009, we allowed these trees to be treated by TFI. The results in 2009 and 2010 were so satisfactory that the following spring the whole community had 64 problem trees treated. This came with a 3 year warranty.
In the growing seasons of 2011 and 2012 in the neighborhoods of the treated trees, we have received no complaints of louse infestations.”

Henk Nieuwerth Performer Culture & Green Technology @ municipality Twenterand


The added value of vital green

TFI is your partner for sustainably healthy trees and lawns. Our mission is to help you grow and support healthy trees.

With the effects of a treatment lasting from 7 to 10 years, the efficiency of the TFI method is unparalleled. By comparison, the ‘flop’ method only lasts up to two years and the required soil excavation can cause a lot more damage to soil and tree habitat.

Act fast!

Discover what TFI can do for you. Call 035-5770970, to make an appointment with us. You can also ask specific questions easily using the form below. We will respond quickly to your inquiries!