Biodiversity: Making a bug hotel

Around this time last year, I wrote a piece on the benefits (to wildlife) of not doing too much in the way of autumn garden tidying, and earlier this year I wrote about 2010 being the International Year of Biodiversity and how easy it is to contribute in our own gardens – so I thought you might like to see one of my own humble efforts – “The Crawl Inn”.

The Crawl Inn is a “bug hotel” – a place in the garden, loosely constructed from debris, intended to provide habitat for over-wintering of creepie-crawlie and buzzing insects. Most of these are highly beneficial to our gardens – either directly (e.g. pollinating insects and those such as ladybirds & lacewings which are predators for the less-welcome visitors like aphids) or indirectly (through forming part of the food chain for other insects, small mammals & birds).

Making a bug hotel is really easy, and it costs almost nothing, as well as being great fun for the kids! There are excellent instructions on the “buglife” website, and a Google search for “bug hotel” will also provide a multitude of examples and instructions for making shelters with varying degrees of “style” & ornamentation from all sorts of materials.

My own version was made as follows:

1. Gather the materials –
   Some plastic mesh (about 1m x 1m), 3 lengths of timber batten about 1.2m (4’) long and a piece of exterior (marine) plywood about 450mm x 350mm (18” x 14”), plus some twist tie and a staple gun.
   
2. Position one of the battens about 75mm (3”) from the end of the mesh, with the end of the batten flush with the edge of the mesh.
   Use the staple gun to tack the mesh onto the batten.
   
   
3. Repeat this with a second batten at the other end of the mesh, then with the third batten roughly in the middle of the mesh.
   
4. Roll the mesh to form a cylinder with the battens on the outside. Use a few strands of twist tie to join the mesh together between the 2 outer battens.
   
   
5. Take the tube to the spot where you want the bug hotel – ideally where it’s not exposed to cold winds and where it’s partly shady & partly sunny.



6. Hammer the long ends of the batten into the ground to make the cylinder self-supporting. It doesn’t matter if there’s a gap at the bottom between the mesh & the ground – that will give room for small mammals to use it too!



7. Start to fill the tube with materials to make the hotel’s accommodation –
   dry dead leaves;
   broken bricks & paving;
   dead stems & twigs from plants;
   short lengths of hollow bamboo cane (use an offcut of plastic pipe or part of a drinks bottle to hold them together as a tight bundle);
   pieces of wood with various-sized holes drilled in them;
   short lengths of tree trunks or branches – especially with rough or flaking bark, large stones, etc.
   


8. Almost anything will do – the objective is to create cracks & crevices and hollow spaces of different sizes to suit a whole range of creatures.
   
   
   


9. Once the tube is full, use the sheet of plywood to add a “roof” to keep the hotel rooms dry. This could be just placed on top of the tube, with bricks or large stones to weight it down, but I simply drilled a couple of holes at diagonally opposite corners then threaded some twist tie through these and secured it to the plastic mesh.



10. If you’re going to position your hotel on solid ground (e.g. paving), you’ll need to cut the battens the same length as the width of your mesh – hammering timber through the patio just won’t work!
    


11. My finishing touches were to print off the name of my hotel “The Crawl Inn” and a “Vacancies” notice, together with the “helipad” landing sign, make them waterproof by laminating them in plastic, then using the staple gun to fix them to the battens & roof.

To quote from the buglife website “A bug-friendly garden is a wildlife-friendly garden so if you want a garden filled with life, you need to look after your bugs.” – so, what are you waiting for ... get cracking on your own “B&B for Bugs” before winter sets in!

Concrete Jungle: biodiversity through school gardens

Concrete Jungle is a new initiative to encourage schools to plant flowers and grow vegetables to create wildlife havens in their grounds. I’ve blogged before about the International Year of Biodiversity of which this campaign is a part. Concrete Jungle has been developed by Cool It Schools, a global programme for young people, encouraging them to do something about climate change. There’s a downloadable teacher’s pack with suggestions for developing a garden, and lesson plans and ideas to interest students.
I was particularly interested in this, since I’ve been developing a wildlife garden with a school which has now made real progress. After I set out the plot a group of volunteers set to with enthusiasm, and its hoped that the project will be completed this year.

Once schools have signed up with the Concrete Jungle campaign they can register the dimensions of their garden and use the site to show the progress they are making.

Rain Garden Success

I shouldn't be here blogging. I should be in California, but I think something went wrong with the translation when we asked the Icelanders to "please give us back our cash"!


Back in August last year, I blogged the article on Rain Gardens which I'd written for my local newsletter. I've just written a follow up piece to say how the garden "performed" through the winter, so here it is:

As we’ve now come through the winter and spring is with us at last, I thought you might be interested to know how it got on. Well, I’m pleased to say it’s good news! The rain cups looked terrific, both in gentle rain – when the water trickled and splashed through - and in heavy downpours – when it formed a solid column through the centre of the rain cups. The rain cups also had another practical use – in light rain or drizzle, when it wasn’t easy to tell whether it was raining or not, a glance through the window at them would readily give the answer, as directing the run-off from part of my bungalow roof through them “magnified” the rainfall effect. In heavy / sustained rain, the rill and rain garden do flood, as intended, covering the cobbles and (apologies to residents in Peterscroft, etc for “rubbing it in”) the ground beneath the rain garden is sufficiently permeable to allow this ponding to infiltrate and clear in about 6-12 hours after the rain stops.

So the mechanics of the rainwater collection and dissipation work fine, but what about the rain garden plants – how did they cope with continual flooding?

Once again, I’m happy to say, mainly successful. All but two of the species have come through and are now re-growing strongly. The ones which failed are a Verbascum (which I didn’t really expect would survive, and only included as a pretty summer plant with height) and a Hebe (H. carnea ‘Varigata’) which isn’t showing any signs of life, and was probably a poor choice – even though I’d planted it at the edge where it was less prone to flooding. Maybe it was the frosts rather than the wet which did for it? The successful plants, which “baked” through the end of summer last year, and survived the flooding of the winter, are: Calamagrostis acutiflora, Campanula lactiflora ‘Loddon Anna’, Carex ‘Evergold’, Cornus alba ‘Aurea’, Hemerocallis ‘Crimson Pirate’, Hypericum inodorum ‘Magical Red Star’, Pennisetum ‘Red Buttons’, Philadelphus ‘Belle Etoile’, Physocarpus ‘Diabolo’, Rudbeckia fulgida ‘Goldsturm’, Sambucus ‘Black Lace’, Sedum ‘Xenox’ and Tradescantia ‘Sweet Kate’. I can’t guarantee that these would always survive in extreme conditions, but you might like to investigate them if you have difficult areas to plant.

Another part of the change to my front garden was laying a decked pathway to a small decked sitting area in the “alcove” of the bungalow. For this I used “Millboard” composite decking - which has the look of old oak boards but is, in fact, manufactured from waste hardwood and recycled plastic. This has the advantage of being very long life, doesn’t warp, split, rot or fade and, unlike timber decking, is very non-slip. It’s also claimed to be a low-energy manufacturing process and, as the boards don’t need any oil or chemical treatments, seemed to me to have fairly good sustainability credentials. The purpose of the small sitting deck, which faces to the west, was to allow us to glory in the late afternoon / evening sun after it’s left our back garden. Once we’d overcome our initial reticence at being “on display” in the front garden, we found it to be a really good social feature – with people passing by stopping to chat and neighbours joining us for a cuppa or glass of wine.

We’ve recently completed this feature with a copper and stainless steel screen panel at the edge of the sitting deck. I commissioned the panel from my designer-blacksmith neighbour, Colin Phillips, having designed it myself based on part of some gates which Colin had previously made. You can see the genesis of this on my last blog post.

The final piece of redesign for this section of my garden was stripping away most of the lawn to give wider borders around the rain garden and decked path. These were very successful last summer - with flowers such as Borage, Nasturtium and California Poppy providing nectar sources for bees and butterflies. I’ve now added a series of “Minarette” fruit trees (Cherries, Gages and Plums) and a small standard Cherry. I know that it wouldn’t look good to protect these with netting in my front garden, so I reckon to share any crops with the birds – part of my contribution to International Year of Biodiversity!

If you’ve not heard of the latter, 2010 has been designated “International Year of Biodiversity”, by the United Nations, to call attention to the accelerating decline in biodiversity – mainly through human activities such as industrial monoculture food growing, pesticide usage and destruction of habitat. The retention of diverse flora & fauna throughout the world is vital to the human species, as much as to other living creatures, as we depend upon networks of other plants and animals for our food, energy and medicines. To find out more about “IYB” and how you could help please visit my previous blog piece

A Year of Biodiversity

The UN have designated 2010 “International Year of Biodiversity” in recognition of both its importance to all life on Earth, including the human species, and its increasing loss – mainly due to human activities such as deforestation, industrial monoculture food production, habitat pollution and climate impacts. The website declares the designation “is a celebration of life on earth and of the value of biodiversity for our lives. The world is invited to take action in 2010 to safeguard the variety of life on earth: biodiversity.”

“Why is it so important?”

Humans are but one animal within the Earth’s diverse flora & fauna, however there is one huge difference between our species and all others – we have the ability to protect or destroy the natural diversity. We depend upon the networks of other living species for food, fuel, health & wealth. Whether your belief in how this arose is through Darwinian evolution, or in the design of nature by a creator God or gods, there is no living organism on this planet which does not perform some service to others, and it is to our own detriment to endanger these networks – whether deliberately or unwittingly.

“Yes, but what good can I do?”

The main International Year of Biodiversity website urges us to do just one thing towards biodiversity, and gives a huge list of what we might pledge to do - from creating a wildflower meadow, planting a window box, not mowing part of our lawns, applying for an allotment, tackling Japanese Knotweed see here for more information on this), to encouraging bats.

The UK’s IYB website, hosted by the Natural History Museum, explains how we can all get involved. There’s information on saving the British dormouse; how to build a bug hotel in the autumn to help insect over-winter; joining in with the Big Wildlife Garden (more of this below); looking for lichens; enemy invaders (helping to monitor non-native species of ladybirds) and counting banded snails as part of Evolution Megalab, being run by the Open University, supported by the Royal Society.

The Big Wildlife Garden

Natural England are running this campaign which recognises two major aspects - the important part gardens play as habitats for many species, and that gardening in a wildlife-friendly way can increase the diversity of plants and animals. This is a topic I’ve alluded to several times here, such as growing fruits in my front garden, growing veggies in window boxes, and (not) tidying the garden for winter.

You can register your own garden here as part of the Big Wildlife Garden and gain points for the things you do to encourage wildlife - even just leaving a patch of nettles (which hosts 40 species of insects, including some of our most colourful butterflies) - building up your score towards Bronze, Silver, Gold and Green award levels. There’s an online forum too, to share ideas from other organisations.

School Wildlife Gardens

Of particular interest to me is the competition for the Big Wildlife Garden School of the year since I’m involved with a local infant school to develop just such a garden. Schools must work their way to Green level, and then send in an article and photos of their wildlife project. Judges will choose regional winners, as well as an overall national winner.

Biodiversity - join in – whatever size space you have!