The problem with living in big cities is that space is at a premium, and if you’re hoping to partake in gardening as a hobby then you’re most likely going to have to get a bit creative in order to do it. You don’t need to have a garden in the traditional sense to do gardening; it doesn’t just apply to those who are lucky enough to have a decent sized back garden to play around with. You can create miniature gardens in window troughs, create a garden on a balcony or even try your hand at gardening indoors. That’s the beauty in gardening – it can be done anywhere!
Urban Gardening Improves Our Cities
It’s plain to see that gardening is universal, even in the densely packed urban environments that the majority of the world’s population now inhabit. Rooftop gardens are growing increasingly popular as a way to beautify what can be a dull and manufactured looking environment. It also serves to attract birds. Such urban gardens are also a great way to promote community spirit and wellbeing through gardening, with neighbours working together to create something they can be proud of and a place where they can relax and their children and toddlers can play safely so that they don’t venture into busy and traffic clogged streets. Finally, urban gardens can be used to grow fruits and vegetables for consumption by the local community, which will also give them a hobby to focus on. The great thing about community projects is the donations, be it hedge trimmers, chain saws, or leaf blowers. Local businesses are always willing to help in exchange for coverage, so good work can be done.
One major benefit that urban gardens can have in cities is an improvement in the air quality, be it garden walls to take make excellent use of space. The quality of air in major cities across the world can often be terrible, if not dangerous, which is largely down to the amount of traffic that such cities bring and the subsequent fumes that are pumped into the air. Plants, particularly when situated on rooftops, take in carbon-dioxide and replace it with oxygen, if you take reasonable steps to preparing quality soil and a watering system then this will have a considerable positive impact on the environment. While one garden won’t make a massive difference, if a city was dotted with such gardens we’d definitely see a benefit in the long run.
On The Buses
A landscape artist in Spain has taken the idea of improving a cities air quality through urban gardening and has taken it one step further. Marc Granen has introduced a bus that has a garden growing on its roof. Yep, you read that right – a bus with its very own garden! For all intents and purposes it’s a pretty normal public bus, except it has a system known as PhytoKinetic that uses condensation from the buses air conditioning system in order to water the roof.
Marc says that he thought of the idea when he realised there was an urgent need for an improvement in air quality in urban areas but the space to introduce green areas wasn’t always available. As with rooftop gardens he knew he had to use areas that already existed, and a public bus (plus a van he has added a garden to) would be the perfect way to help the city breathe as it moved around on its daily routes. There’s not much to one either, it’s an oversized planting tray with a few cool planting accessories.
Who knows? In the future we may be living in homes which all have gardens as part of their roof, and upon leaving our homes we may be driving vehicles with tiny gardens growing on them. It sounds the idealistic sci-fi future, but as the above examples show it’s closer than you think.
Imagine walking down a busy city street, turning the corner and coming face to face with the side wall of a large building that’s covered entirely in greenery; such as this one that was recently completed in London. While that may exist today it’s still a concept that I’d like to see further gardening creativity explored and for cities to take the initiative and give it a shot. This future is one I recently talked about in my ‘using urban gardening to improve our cities’ post; leading to beautification of dreary urban areas, helping clear the polluted city air(hopefully improving wellbeing through garden essentially) and bringing back nature to places that don’t have an awful lot of it and hopefully teaching our children about gardening along the way too.
That future won’t appear until we start making strides to do something about it though, although there are places that are implementing such green measures, we need to get our garden hand tools out and make things happen. However, as with anything progressive some cities are ahead of others in doing a lot to improve the urban environment, and for those cities I’d say one of the best ways they can start is by creating a few vertical gardens, if you implemented this in your garden it would definitely go a long way toward attracting birds to your garden.
Before we get into current examples though let’s take a look at what these vertical gardens actually are.
What are Green Walls?
Green walls are either part of a building or free-standing. These walls are then completely or partially covered in vegetation; such as plants, flowers and even vegetables or fruit. It’s not a modern concept, and can be traced back to the legendary Hanging Gardens of Babylon, but the modern concept was invented by Stanley Hart White in 1938 and later popularised by Patrick Blanc in the late 1980s. We now see all manner of variations with plant pots or self watering troughs simply screwed to the wall in a formation or randomly.
Green walls usually come in one of two forms; green facades or living walls. Green facades are made by using climbing plants that slowly clamber up the wall and take root. This can be forced by building a specially designed structure for the plants to grow on, while the plant remains rooted to the ground. Living walls are different in that modules containing high quality soil or other growing mediums are fixed against a wall. The plants are then planted inside them, often supported by an irrigation system that makes sure they are watered regularly without human input. The latter are obviously are a lot harder to install, so these are normally carried out by professionals. This certainly beats your everyday hanging baskets.
Examples of Green Walls
The green wall on the Musée du quai Branly in Paris was designed and planted by Gilles Clément and Patrick Blanc (normally regarded as the father of vertical gardening). It takes up the entire length of one side of a building and looks really lush. However, in winter the wall is affected by direct exposure to north winds blowing in over the waters of the Seine river. Although the support system for the plants’ roots, plus its irrigation and drainage systems, work well on other parts of the wall that aren’t as exposed the area that is tends to suffer frost damage. It’s a pity, because it really is a beauty! There’s not really a lot they can do about this but you can get your garden ready for snow or frost at home.
Another green wall designed by Patrick Blanc, on the Madrid Caixa Forum, is a fantastic sight to behold. The building is a former power plant, with the green wall taking up one outside wall at 4 storeys high. Its home to an impressive 15,000 plants belonging to 250 different species and has been flourishing ever since its installation in 2008.
The Fiordaliso Shopping Center in Milan has the honour of being recognised by the Guinness Book of Records for having the largest vertical garden in the world. It’s an honour well deserved, as this impressive installation has over 44,000 plants growing over a massive 13,594 square feet. The green wall is made up of metal containers that hold the plants, which are then slotted together like Lego to create the wall – although all this effort cost $1.3 million. They have a serious watering system too.
There are plenty more examples, but those are the ones that caught my eye!
Can I make a Green Wall in my Garden?
Certainly! A green wall doesn’t have to be one of the huge ones that I’ve featured in this post; you can quite easily install one in your own garden. I suppose the question is; why would you want to? These benefits of course:
Soaks up the water from heavy rain, thus keeping it away from the walls so saves on water too.
Provides an extra layer of insulation to a building. This is one of the big reasons why cities are installing green walls, because it helps keep heat inside buildings and cuts down on energy loss. The warmer the building, the less need for heating requirements; so it makes it cost effective to install one.
Keeps your home cooler during the summer, as green surfaces don’t store the sun’s energy like brick and concrete walls do.
Looks great, you and your guests will be admiring the green wall for years, it simply needs a hedge trimmer or shears to shape it into something beautiful. I prefer shrub trimmers though.
Improves air quality. Again, this is why cities are installing green walls, and while you might not think the small green wall in the back garden is doing much good this is a case of every little helps!
Absorbs noise pollution
It’s also worth noting that green walls don’t have to be installed on outside walls, they can also be put in interiors too. However, you will need to provide a source of artificial lighting and make sure you keep them well watered.
Here are a few ways of installing a green wall yourself:
Pouches: Attach pouches to a wall, which can be bought in modular form, and arrange them in rows. You should be able to water these yourself, but it they are too high you can install an irrigation system.
Trays: If you’ve ever used nursery flats then it’s a similar process, except you’ll be mounting the tray on your wall instead. The plants are planted in individual cells that are slanted at an angle. It’s a good way of creating that living wall look.
Hanging pots: Attach pots to the wall in rows of three or four, although make sure they’re sturdy enough to cope with winds.
Anything: Sacks, old planters and even old rain gutters. Get creative and you can create vertical planters out of a huge variety of things, but the larger the plant you want in there the deeper the space required in whatever you’re using will need to be to allow for more soil.
As with a lot of things when it comes to gardening, people are going to have their own ideas. Feel free to share your ideas for green walls and vertical gardens in the comments below. Plus, if you’ve spotted on green wall examples while you’re out and about – or even examples located in your own garden – then please do share the photos with us.