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About Tenco
Tenco is one of New Zealand’s largest exporters of forest products. We have built to this position since 1991 when the company was set up to export lumber to growing Asian export markets.  Experience and reputation count; from small beginnings Tenco has become the largest independent exporter of New Zealand lumber and New Zealand’s 4th largest log exporter.  Tenco has a regular shipping program of their own log vessels and in combination with these and other ships currently calls  at 7 New Zealand ports (5 North Island and 2 South Island).
Tenco buys standing forests.  Tenco currently has a number of forests which they purchased at harvestable age to log over a number of years for export and domestic markets.  Tenco also regularly buys smaller tracts of forest to harvest immediately or immature forests to hold until harvest time.  Tenco is interested in broadening  the  base of owners from whom it purchases forests and stands of trees.  A deal with Tenco is a certain transaction.  The owner and Tenco will agree on a value of the tree crop and then Tenco will pay this amount to the owner either in a lump sum amount or on rate per volume unit out-turn from the forest depending on the nature of the tree crop.
Tenco knows there are a lot of farmers who have trees that are close or ready to harvest and will be asking themselves how they should proceed with the sale of their trees.  For some farmers the kind of certain transaction with money in the bank could well be appealing. Tenco is actively interested in buying harvestable forests or trees from areas including all the North Island (except the Gisborne and East Coast districts) and Nelson & Marlborough in the South Island .
If you own a forest in this area (16 years and older) and are ready to enter into this kind of agreement Tenco is interested to develop something with you.
Please contact: 
Work: +64 7 357 5356  Mobile:  +64 21 921 595

NZFFA Member Blogs

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You can either publish your blogs yourself, or email a document to head office for publishing.

Member Blogs

Recent blogs:

Plantations can be very productive

Wink Sutton's Blog
Friday, November 25, 2016

On a visit to Poland in 2006 one of my Polish forester hosts was adamant that plantations of non-indigenous trees could not be as productive as plantations of indigenous trees. Nonindigenous plantations were also at much greater risk. Some overseas foresters, as well as some environmentalists, hold similar opinions.

Why do they hold such negative opinions of plantations of non-indigenous plantations? There is now ample evidence that, if planted on suitable sites, nonindigenous tree species can be very productive.

The experience with plantations in Saxony, Germany in the late 19th Century has been retold countless times. A plantation of Norway spruce, a tree species not normally occurring so far south, had poor growth and general ill-health. This early experience is the probable basis of many objections to plantations of nonindigenous tree species. In addition, plantations worldwide have been established as monocultures and many believe monocultures are not natural, even though there is ample evidence that in the temperate regions natural monocultures are not uncommon – see my comment in the August issue of Tree Grower.

Subsequent research of the site showed that the poor growth and poor health were because the site had limited drainage and waterlogged soils – the roots of the spruce trees were unable to penetrate below the topsoil. The site was totally unsuited to the species. Later research showed that local farmers had for decades removed the fallen needles for animal bedding, thereby depriving the trees of being able to recycle nutrients and therefore contributing to the site decline. 

Successful plantations

As well as New Zealand’s plantation experience there are many examples of successful plantations of non-indigenous tree species. The most dramatic example of plantation success comes from Brazil. The indigenous forest of the Amazon basin is very slow growing. According to the UN Food and Agriculture Organization, Amazonian mature forests only average 100 cubic metres a hectare of which only 12 cubic metres a hectare can be used. To the south of the Amazon, but north of the Tropic of Capricorn, are the eucalypt pulpwood plantations of Aracruz. There are reports of an annual growth rate of these plantations  exceeding 50 cubic metres a year for each hectare. In agriculture there are no concerns about the use of non-indigenous plants or animals. If New Zealand was limited to indigenous flora and fauna there is no way that we could support a population of over four million people. We would be very limited in what we could eat − fern shoots and roots, a few plants, native birds and seafood. We would have almost nothing to export.

Feeding the world

By having access to the biodiversity of the whole world and combined with selective breeding, the world has been able to feed over seven billion people globally. In food production the world has been very selective. The UN Food and Agriculture Organization estimates there are 250,000 to 300,000 plant species globally that could be eaten. However, humans consume only about 200 plant products. Although the latter estimate probably understates what is globally consumed, most of our plant food comes from only nine plants − with maize, wheat, rice and potatoes being the four most significant ones.

When we consider meat sources we have been even more selective. Most meat comes from cows and pigs while the consumption of sheep meat, venison and goat meat hardly register. When it comes to bird meat almost all comes from one bird − the chicken. We have been so selective because we have concentrated our breeding effort on the few species which are very easy to manage, very pleasant to eat and are very productive.

In the future less of our wood will come from managed indigenous forests. These forests are not only expensive to manage but also less productive and therefore less profitable. Because wood is essential to our life style and because wood is environmentally friendly and renewable, our wood will increasingly come from plantations. Most of these will be monocultures of non-indigenous tree species. In the future we will have no option but to parallel agriculture and concentrate on those tree species which grow fast and are very useful. 

Eucalyptus selection for New Zealand - what is the elephant in the room?

Dean Satchell's blog
Thursday, November 10, 2016

We each grow forest plantations for a reason. Those reasons may vary, but my primary reason is for a return on my investment. This means producing wood or fibre as fast as possible from trees that remain healthy throughout their rotation. 

I'll be so blunt as to state that the most important factor to consider when selecting eucalyptus species for commercial forestry in New Zealand is forest health. I state this categorically and from experience.

The problem for growers in New Zealand is that each new pest that "blows across the ditch" from Australia adds to the pest load and eventually the burden gets too much. Serious pest attack on forestry plantations can be devastating and many of us have seen it. However, where this gets interesting is in species selection for insect resistence. Each new pest that arrives favours certain eucalypt species. Just some. Never all eucalypt species. Most people lose interest at this point because there are just so many species of eucalypt... and there are now so many pest species that it all becomes too complicated ...and so the grower exclaims that eucalypts are bug fodder and throws in the towel.

However, this is not quite an accurate summation. Let me explain why. The key to understanding it all is to divide eucalypts into two groups: "Monocalypts" and "Symphyomyrts". I'm not going to go into taxonomical details about what separates these two groups, but what I am going to show you is black and white. What observant growers have begun to notice in New Zealand that could give us the edge globally on growing eucalypt plantations.

The edge you ask? How could that be... we're getting all the pests and euc's don't grow here any good. Look at Brazil I hear you say, they can bloody well grow the things in ten years or less! No pests over there... too far from Australia. Well... I would suggest that this is changing with world trade the way it is, it is only a matter of time before South America, Asia, Africa and Europe will provide a green salad smorgasboard for a plethora of these Australian eucalypt munching pests too. So what species are they all growing? Symphyomyrts. Why? Because symphyomyrts grow faster than monocalypts (we all love early growth, don't we). Commercial eucalypt plantations throughout the world are almost exclusively Symphyomyrtus species. Indeed we started that way in New Zealand and planted lots of blue gum (Eucalyptus globulus) over 100 years ago because it grew so well. Unlike the rest of the world however, the eucalyptus tortoise beetle Paropsis charybdis then arrived and saw to our blue gum plantations. Chewed the shit out of them so we gave up. Now the same thing is beginning to happen in other countries.

At this point I have to say we're a resilient lot, us New Zealanders, and there are always crackpots who are willing to try something else. Lots more euc species just over there in Australia, with planters willing to give any of them a go. What emerged eventually, from decades of trial and error, has been consistent and compelling... the species that grow best here are the monocalypts. Took a while for many of us to realise, and some still doggedly perservere with symphyomyrtus species because of fast early growth or desired wood properties such as colour or durability. But with the arrival of each new pest species, the list of starters gets smaller and smaller.

Unless you see the light, you're on a sinking ship. Believe me. Monocalypts don't get the bugs like the symphyomyrtus species, we've known this for some time (see here and here).

The monocalypts could be said to be "ordinary". Their timber is not particularly colourful, nor highly durable... but the wood is durable enough and colourful enough for most applications. Their early growth is quite ordinary by international standards, but what we've discovered is their resilience. They've brushed off everything that Australia has thrown at us and grow pretty much as well as they always have. Their lack of fast early growth is made up for by solid, consistent growth over the medium and long term (similar to radiata but slower than Brazilian eucalypts). The monocalypts are well adapted to moderate fertility and free draining sites in the same way radiata pine is. There is no doubt whatsoever in my mind about their commercial potential. Their timber is stable and easy to mill and dry. The sapwood band is consistetly small, as is the defect core. 

Lets have a look at some serious pest introductions and their favourite tucker:

Eucalyptus Variegated Beetle (EVB) Paropsisterna varicollis

Serious damage: E. bosistoana, E. tricarpa, E. cladocalyx (all Symphyomyrtus)

Little to no damage: E. muelleriana, E. globoidea, E. macroryncha, E. eugenoides, E. pilularis, E. fastigata, E. obliqua, E. regnans (all Monocalyptus)

Bronze Bug, Thaumastocoris peregrinus

Serious damage: E. camaldulensis, E. grandis (all Symphyomyrtus)

Little to no damage: E. muelleriana, E. globoidea, E. macroryncha, E. eugenoides, E. pilularis, E. fastigata, E. obliqua, E. regnans (all Monocalyptus)

Brown lace lerp, Cardiaspina fiscella

Serious damage: E. saligna, E. botryoides, E. robusta, E. grandis (all Symphyomyrtus)

Little to no damage: E. muelleriana, E. globoidea, E. macroryncha, E. eugenoides, E. pilularis, E. fastigata, E. obliqua, E. regnans (all Monocalyptus)

Eucalyptus Tortoise Beetle Paropsis charybdis

Serious damage: E. globulus, E. quadrangulata, E. grandis, E. scias, E. nitens, E. camaldulensis, E. longifolia, E. macarthurii, E. leucoxylon (all Symphyomyrtus)

Little to no damage: E. globoidea, E. macroryncha, E. eugenoides, E. pilularis, E. fastigata, E. obliqua, E. regnans (all Monocalyptus)


You should start seeing a picture emerging. Each new pest has an appetite for some of the symphyomyrts, but not all. But as they keep coming all the bases eventually get covered.

The question I am asking and one I would appreciate some feedback on below, is at what point do we say enough is enough, see the light and stick to planting monocalypts?

Footnote: Monocalyptus species include E. regnans, E. obliqua, E. fastigata (Ash group), E. pilularis, E. sphaerocarpa, E. globoidea, E. muelleriana, E. laevopinea, E. macroryncha (Stringybark group).   

Disclaimer: Personal views expressed in this blog are those of the writers and do not necessarily represent those of the NZ Farm Forestry Association.

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