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Sussex Prairie Garden - Bisons amongst the New Perennials

29/7/2016

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I said here before that I am not a big fan of the New Perennial style of gardening. It doesn't mean I can't appreciate it though. It's just that I'm a sucker for trees and a garden without big trees - to me anyway - is lacking severely. But when you are faced with a bare field which you want to turn into a stunning garden in rather less than a decade, you could do worse than turning to the naturalistic style of the New Perennial Movement: Sussex Prairie Garden proves it.

Planted eight years ago by Pauline and Paul McBride with the help of 40 friends and family, this eight acres garden displays perennials on an amazing scale. Broad drifts of individual species mingle and weave together at their edges and create an incredibly rich tapestry of forms, textures and colours. The beds or borders are shaped in what their creators call "interlocking arcs" in the "shape of a spiralling nautilus shell" with very broad lawn paths between them. However, there are also narrow sneaking paths within these borders which you are encouraged to explore - and all of a sudden you find yourself dwarfed by grasses and flowers.

We went last September and here are a few of the pictures I took. All of them should open in a larger format if clicked.
Every year, the garden also plays host to many sculptures, most of them for sale. However, the herd of bison made of weathering or Corten steel belongs to this particular "prairie". If you want to create your own, there is a lovely nursery attached to the garden: Walking around the latter, you often stumble across some labels so you know exactly what you are looking at and can search the nursery for it. In fact, the borders provide the stock plants from which those for sale are raised.

For once, I managed to let my head keep the upper hand and didn't buy any of the tempting plants on offer. I'm still proud, if I'm honest, for usually desire and impulses get the better of me. But really: Sanguisorba in a 20cm pot? It just doesn't feel right. These plants need room to show their best. Maybe they don't need as much as in this stunning garden, but they certainly look the better for it being given. 
The photographs in the block below are actually vertical images, so will show more when clicked.
The best time of the year to visit Sussex Prairie Garden is late summer, when the flowers and grasses reach their peak. However, I should like to see it in July one day. Or even earlier. Apparently, there is plenty of interest there from June onwards. And right into winter: their skeletons, though more muted in colour, are almost as fascinating as the living plants!

It is typical of the New Perennial planting style to select plants as much for their impact when dead and leave them in place until late winter. Paul and Pauline (who previously have worked with hugely influential and internationally renowned Dutch garden and landscape designer Piet Oudolf) wait for a good still day in February or early March and burn the whole lot to the ground.

For once I thought that I'd let the pictures do the talking. But if you want to know more, there is an interesting - if five years old - article from the Telegraph about the garden. And of course, Sussex Prairie Garden, open to the public most afternoons, has its own website.
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Love science? Got a few pennies spare? Check out Phytl Signs

14/7/2016

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Never let it be said that you can't find inspiration in a tabloid. A link in political coverage recently led me to the website of the Daily Mail. As I'd never been there before, I scrolled down and "inspected" the rest of the news. And to my considerable surprise found an article about a device called Phytl Signs EXPLORER which "lets you hear flowers talk by picking up the signals sent through their leaves".

Well, "talk" isn't the right word perhaps. A video which shows said device in action suggest it is more of an irregular, unnerving wail. It's not something I'd regularly want to hear in my home. But this isn't the point. The point is: there is a Kickstarter campaign running right now, aiming to raise money for something that could possibly help bring about a big step forward in plant science and our understanding of plants.
Picture
The promotional picture of the Phytl Signs EXPLORER, taken from its Kickstarter campaign webpage

The story goes thus: As early as 1873 it was discovered that plants emit electrical signals. But hardly anything is known about why they do and when. There's simply not much research to date. And that's to a large extend down to the fact that these signals are very weak and hard to pick up, drowned out "by background electromagnetic interference" as the experts explain. Studies have recorded such signals when a plant is wounded. So a theory is that plants under stress will tell the world they suffer not just by emitting chemical compounds (something well established in research) but also by electrical signals. Or perhaps not the world: as far as I understood, electrical signals are for internal communication. There may be more such reactions to a plant's environment, and perhaps these signals have a particular biological function, too. But so far no one really knows.

Swiss company Vivent SARL have now created a device that is able, they claim, to pick up these weak signals much better because it is directly connected to the plant. They are then amplified so you can either hear them via an attached speaker or see the graph via an app on your phone or tablet. Via two electrodes - one inserted in the soil, the other clipped on a leaf or stem - the voltage is measured and when it changes, you'll hear a squeal. The faster the change, the higher the squeal. Or the amplitude of the graph, of course. Wearable tech for plants, then. Whilst previously a costly and complicated laboratory setup was needed and signals could only be measured for short periods of time, the claim is that now everyone can record these and for days, weeks or even months. It also means that instead of in the highly artificial surroundings of a specialized lab chamber plants' signals can now be measured in their own natural environment, even out of doors apparently. 

In addition to injury, experts already know that a difference in light - i.e. light/darkness as well as different types of light such as daylight versus light bulb, neon light, etc. - makes a plant react by emitting electrical pulses. They also claim watering or misting triggers a noticeable reaction, though an external expert seems to doubt this. The New Scientist, first to report on the campaign, quotes an Austrian plant biophysicist as saying "When sprayed with water, the plant immediately responded with voltage changes. These electrical signals are just too fast and are not generated by the plant." I think he has a point: As water conducts electricity very well, it seems quite likely - to me anyway - that the changes measured may have occurred on the leaf surface or in the soil, rather than the plant itself. Still, the New Scientist also quotes someone else who gives credibility to the overall claim of Phytl Signs EXPLORER being able to pick up electrical plant signals well.
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Another of the promotional Phytl Signs pictures, showing how a "chat" with your prize pelargonium might look
What do they tell you? As I wrote above: we don't really know yet. So the aim is to collect as much data as possible and then start to decode it: by monitoring plants and comparing day-to-day data, seeing patterns emerge, etc. To this end, the company encourages owners of the device to become part of an online community that shares their plant data, stored in a cloud, and intends to make much of it available to researchers. The idea is: the more people participate, the more data available, the better analyses can be made and the faster those signals and their use or task in plants can be translated and understood.

It is interesting to note in this context, that the Kickstarter campaign is aimed at least as much at the tech geeks and gadget lovers as it is at plant lovers and/ or gardeners. When I last looked, press coverage about the campaign (as listed on its webpage) was mainly in publications catering to the former, with trade magazine horticulture week the only one specifically targeted at "plant people". Also, the Vivent SARL experts are tech entrepreneurs and engineers rather than people with a background in plant-related sciences, and only one of them is mentioned as being a keen amateur gardener. However, in my opinion this does not make the venture any less compelling and worthwhile.

              Learning about electrical signals might help avoid unnecessary stress
           

In the New Scientist article the people behind Phytl Signs EXPLORER admit they hope that "the appeal of listening to your house plants will grab the imagination of enough people to help fund improvements to the device and a large production run". It is about fine-tuning the technology and decoding the signals in the first place. And despite the Kickstarter page rather daftly asking "What will your plants say to you - and how will you respond?", it is less about creating a gadget with which you can (but may not want to) listen to your newly-fashionable Sanseveria. With Phytl Signs RESEARCH and Phytl Signs PROFESSIONAL respectively, Vivent SARL produces - or intends to produce - similar devices for the academic as well as the horticultural and agricultural community. Because despite the exciting insights hoped for, the ultimate goal is not just the advancement of science either. There is practical value in deciphering electrical pulses sent by plants.

As there are clear differences in signals when a plant grows vitally and when it switches to defence mode, for instance, and these changes are almost immediate after a change of conditions, a grower will know much faster about whether a plant thrives or suffers. Due to this early warning, he or she will thus be able to react much more quickly to alleviate a problem. At least they will be, once the signals have been decoded. As tech entrepreneur and Vivent SARL co-founder Dr Nigel Wallbridge explained in horticulture week: "By listening to what our plants are telling us, we can, together, start to understand them. This is exciting for everyone interested in the environment, sustainability, the future of food and open agriculture. If we can see the first signs of water stress, then we could minimise the amount of water needed for agriculture. If we can detect the first sign of disease, we can stand a better chance of preventing crop failures all over the world. The possibilities are far reaching."

So while personally I prefer to closely observe my plants rather than get them wired up, I seriously consider contributing to the Phytl Signs Kickstarter campaign. It runs until July 29th. Many people's pennies also make a pound :-)
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    About the Author,
    Stefanie


    Born and raised in East Berlin, Germany. Has moved a few miles west since, to East London. Gardening since childhood, though first attempts were in what should properly be described a sandpit (yes, Brandenburg’s soil is that poor). After 15 years of indoor-only gardening has upgraded via a small roof terrace to a patio plot crammed with pots. Keeps dreaming about a big garden, possibly with a bit of woodland, a traditional orchard and a walled garden plus a greenhouse or two. Unlikely to happen in this lifetime - but hey, you can always dream.



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