Tree of 40 Fruits


I’m sure we’ve all seen a tree or two at some point in our lives, sometimes carrying fruit, but never a single tree with branches full of 40 different varieties of fruit.

This truly innovating project was actually led not by a scientist, but by an artist. His name is Sam Van Aken, and he is an art professor at Syracuse University in New York who some years ago planned to create a tree where each branch produced a different fruit, so that in spring, every branch would bloom into a different colour, but all in shades of pink, white and red.

tree 40 fruit

A CGI image of what the tree will look like in spring

To accomplish this gardening feat, he used a technique called chip grafting. It consists of cutting a fragment of a flowering tree that gives one type fruit (including the bud), and adding that onto a previously-made cut on the ‘master tree’ (the original tree that will hold all the different fruits). Then, it is held together with tape and left during the winter so the two parts join.

And so step by step, the tree became larger, and every year it had the ability to produce more and more fruits until, after 9 years, it could make up to 40 types. This project has been carried out for quite some time, so now, in total, there are 16 of these hybrid trees, each with a different combination of fruits. However, they all produce variations of stone fruits, like apricots, cherries, plums and peaches because they are easily compatible. To find these trees, you should look all over the US, in museums and community centres, or if you’ve got enough money to spend on this, you can even buy your own for around $30,000.

The idea originally was just to create beautiful trees as a work of art, but as Van Aken was collecting different varieties of fruits to add to his trees, he discovered a growing problem: a lower variety of species had become available, and only a few were being grown at an industrial scale. The less-common varieties were not being used because they were not as good for selling: the colour may not be as appealing, the size may be too small or too large, or the may last very little time on the shelf. This meant that some of the native, antique species were being lost, which worried the artist and made him change the focus of the project onto conservation. So now, not only do his trees carry some of these rarer species so they are still around, but he’s also spending the money he earns from the ‘Trees of 40 Fruits’ into creating an orchard collecting all the different varieties of stone fruit, especially the uncommon ones, so they are still go and people can even go and have a taste!

The Tree of Light


Today I bring you an interesting project I came across on my search for a new topic, which I found too interesting to ignore.

When you walk down a street at night, you will probably find lamp posts around you shedding light so you can see where you’re going. If you also happen to be in a park, you will probably see trees somewhere. Well what if I told you there was a way to combine these two seemingly opposite objects into one? The product is a surprisingly simple yet brilliant idea: trees that glow in the dark.

Glowing plants are not new to the field; in fact, they have been around since the 1980s. But it is only in the recent years that the idea of making glowing trees and planting them on the streets has appeared. It could indeed solve many problems: it would cut down electricity use and improve the city’s biosphere, being greener in not one but two ways.

To make a glowing tree, scientists have 2 methods. One involves genetic engineering, where genes from bioluminescent organisms such as bacteria are inserted into plant cells, and if a whole plant develops from that one cell, the whole plant will emit a soft glow. There have also been experiments which used firefly and jellyfish genes, but they were not as efficient and in some cases the plant had to be sprayed with a specific substance for it to actually glow.

The other method, which is a lot more specific, is to dip the plant in a solution of gold nanoparticles. The plant then absorbs the gold into its system, so when UV light is shone onto the plant, the electrons in the gold became excited, and produced a bluish glow when the UV is stopped.

A popular case of glowing plants occurred just last year, when a Kickstarter fund called ‘The Glowing Plant Project’ collected almost $500,000 and with the money was able to create plant seeds which, if treated nicely, would grow into a full, glowing plant. Its aim was to popularize biotechnology and genetic engineering in the mainstream public, and to do so, sent some seeds to all the donors. Of course, there was some repercussions, mostly by scientists disliking the idea of releasing engineered plants into people’s hands with no real regulation.

glowing tree street

Don’t they?

Whether it has drawbacks or not, glowing plants and trees are a fascinating idea, which could have many important applications; the use of glowing trees to substitute lamp posts being only one of many.

They do look pretty cool too.