30th May 2022
Ancient trees are not only valuable in their own right, they also support a wide and diverse ecosystem – beetles, insects, birds, fungi, small mammals, plants etc – and are key in maintaining biodiversity. The Ancient Tree Forum has a booklet exploring this topic – https://www.ancienttreeforum.org.uk/wp-content/uploads/2015/02/ancient-tree-guide-6-special-wildlife.pdf
Looking after old trees and woodlands matters!
28th May 2022
Glyphosate and other herbicides are variously used – or not – by local councils to manage weeds in public spaces such as streets, parks, play grounds and pavements. In June 2020 Amanda Tuke asked thirty two London Boroughs (not including City of London) for information about:
The results show that whilst some councils do not use glyphosate at all, others allow its application up to three times a year. https://freelancenaturewriter.com/2020/07/15/london-councils-use-of-weedkiller-policies-and-reduction-initiatives/
Where less herbicides are used, you may well notice a growing number of small plants along the edges of the pavements – a greening of the environment that pollinators may well appreciate!
You might like to ask your local council about their policy.
25th May 2022
Pesticides and herbicides not only kill pests and weeds, they are also kill others higher up the food chain such as ladybirds, frogs, and birds. In the recent review, the State of the World’s Birds it has been noted that across the globe more than half of bird species are in decline with farmland birds in Europe declining by 57% since 1980.
“‘This is due to the intensive agriculture that supplies cheap food, Lees said, adding: “If we want farmers to farm wildlife, we have to pay for that as a society.”’ https://www.theguardian.com/environment/2022/may/05/canaries-in-the-coalmine-loss-of-birds-signals-changing-planet
There are two things we can do: first opt where possible for organic produce, and second, avoid using pesticides and herbicides in our own gardens.
19th May 2022
If only 44% of plastic packaging waste is recycled, what happens to the other 56%?
Some will litter the streets and pavements, before being blown into hedgerows and trees, into waterways and out to sea. There it will break down into smaller and smaller bits until it is small enough to count as micro plastic (less than 5mm in length). Micro plastics have been found in the ice at both north and south Poles. They have infiltrated the food chain. They have even crossed the placenta from the mother to the foetus.
Some of this litter will be eaten by animals and birds almost certainly causing premature death. Some will go via domestic dustbins, public waste bins and commercial waste bins, into either landfill where again it will break down over time into micro plastic particles, or it will be burnt in an incinerator further adding to air pollution.
Want to recycle ‘hard to recycle’ plastics? Here is a partial solution – https://greentau.org/2022/04/13/counting-on-day-150/
7th May 2022
According to the recent review, the State of the World’s Birds, 48% of bird species populations are in decline, 39% are stable, 6% showing increases whilst a further 7% have unknown trends. The major cause of decline in bird populations is the growing footprint of human consumption. Alexander Lee, of the Metropolitan University Manchester and leader of the review, says that people should not feel helpless: “We all have connections [to birds]. If a company is associated with deforestation in Brazil, don’t buy stuff from them,” he said. “And if everyone spares as much land as possible within their gardens for nature, then that adds up to quite a large area. Another lever is voting – we get the politicians we vote for.”
6th May 2022
As a prolonged period of hot dry weather is forecast, the RSPB is inviting us to provide extra help for the migratory birds that are arriving in the UK. https://www.rspb.org.uk/about-the-rspb/about-us/media-centre/press-releases/mud-pies-for-house-martins/
The RSPB is urging the public to get their hands dirty this weekend and create mud pies to help endangered birds such as house martins, swifts and swallows get enough sludge to build their nests.
A nine-day mini-heatwave is hitting the UK, which coincides with the return of migratory birds here to breed. Many of these birds have flown thousands of miles on their journey. But conservationists are concerned that the ground is getting so hard it could stop them from being able to make their nests.
By leaving out dishes of mud mixed with water, or creating little puddles in the garden, the public can make a big difference, said Becca Smith, of the RSPB. “It’s the easiest thing that people can do to help these birds after they’ve flown all the way from Africa to our shores. Plus, a bit of mud pie-making is fun for the weekend.”
Putting out dishes of fresh water will also provide drinking and bathing for a variety of birds. House martins – which require the most mud for nestbuilding – can mix water with soil themselves, which they then combine with things such as grass, feathers and vegetable fibres to make little cup nests under the eaves of houses. https://www.theguardian.com/environment/2022/may/05/mud-water-to-help-nesting-migrating-birds-during-uk-heatwave-rspb-aoe
5th May 2022
Access to green and blue spaces is important for our own physical and mental health as well as being good biodiversity. The Green Space Index by Fields in Trust found that more than 2.5 million people lived more than a 10-minute walk from the nearest area. The Office for National Statistics reports that one in eight households (12%) does not have access to a private or shared garden.
Campaigners are calling on the Government to do more to ensure everyone has access to green spaces. https://action.wildlifetrusts.org/page/97830/petition/1
Can we do more to encourage bird populations that frequent our gardens?
2nd May 2022
No Mow May!
This month we are encouraged not to mow our lawns. And here’s why:
On a single day in summer, one acre of wildflower meadow can contain 3 million flowers and produce 1 kg of nectar sugar for pollinators. But since the 1930s, we have lost nearly 7.5 million acres of flower-rich meadows and pastures. Just 1% of our countryside now provides this floral feast for pollinators. Against this loss, habitats such as lawns have become increasingly important. With 15 million gardens in Britain, our lawns have the potential to become major sources of nectar.
Sign up and find out how many pollinators your lawn can support: https://nomowmay.plantlife.org.uk/sign-up/
4th April 2022
Did you know that the ordinary domestic garden makes up one third of all green space in London?
According to Greenspace Information for Greater London, GiGL roughly 47% of Greater London is ‘green’, of which 33% is natural habitats within open space and an additional 14% is estimated to be vegetated private, domestic garden land. https://www.gigl.org.uk/keyfigures/ This is not just true of London, but for the whole country. According to the RHA ‘Private garden space in Britain cover about 728,900 hectares so their potential as a haven for wildlife is considerable’. If each garden were actively managed as a nature reserve just think what an impact that would have on biodiversity and environmental wellbeing!
Domestic gardens can offer a diversity of plants and micro habitats making them ideal environments for a wide diversity of insects and beetles, birds and other small creatures.
A diverse range of plants can not only provide food and shelter for a great number of birds, insects and other creatures, they can also be chosen to provide a year round supply of blooms that ensure constant supply of food for insects – and a good supply of insects will ensure food for other creatures further up the food chain.
A variety of height and density of plants and planting, including trees and bushes, climbers and creepers, ground cover and grasses will again meet the needs of diverse range of fauna. Areas of both shade and sun, warm hollows and places giving shelter from the wind will be appreciated. Further micro habitats can be provided with the addition of ponds or bog gardens, log piles and dry stone walls.
Encouraging wildlife is also about avoiding things that can cause damage such as pesticides, herbicides and slug pellets, and the use of peat which comes at the expense of peat bogs which are an exceedingly valuable habitat in their own right.
Many creatures will need more than the space offered by one garden. Their normal habits maybe to move or roam over a wide area – hedgehogs for example can travel up to 2km as part of their nighttime forays. Whilst robins may guard one garden as their territory, other birds such as swallows, long tail tits, and jackdaws will feed across a much wider area. Gardens can act as corridors and stepping stones linking one garden to the next as well as linking into wider green spaces such as parks and commons. Small holes at ground level will allow hedgehogs to travel from one garden to the next, whilst trees, shrubs and climbers will provide safe stopping off places for small birds.
Gardens also benefit our own well being. The National Open Gardens Scheme identifies 5 ways in which we can benefit from our gardens – https://ngs.org.uk/gardens-and-health-week/
For those without gardens, house plants can be equally beneficial and rewarding – https://ngs.org.uk/a-haven-of-houseplants/
Gardens are places to grow food and make us aware of the journey from fork to plate. Growing food encourages us to eat more healthily. Growing your own salads, herbs and soft fruits can significantly reduce the carbon footprint of what you eat.
Gardens can also protect us from some of the effects of the climate crisis. Gardens with plenty of vegetation will add moisture to the air making it feel comfortable during hot weather and trees of course provide shade as do climbing plants trained over pergolas. Climbing plants can shade walls from the sun and keep the building cooler, whilst plants trained around windows can cast shade that cools the room inside. Gardens are good at both absorbing rainwater especially if there plenty of soft areas – lawns, flowerbed and vegetable plots – rather than hard surfaces such as pavements, patios and compressed soil. Gardens with plenty of plants are good at slowing the rate at which water drains into the water table as leaves and roots trap and delay the rain. Longer grass is better in this respect than short grass, and will equally better withstand periods of drought. Both absorbing and delaying the rate of water flow reduces the risk of flooding. You can even be proactive by emptying water butts in advance of heavy rainfall.
Gardens are natural carbon sinks. Trees, plants and lawns all absorb carbon as they grow. So does a well tended soil. This is a soil that is not over worked or compacted but rather is well supplied with hummus that makes the soil home for a multitude of worms, beetles, bugs, bacteria and fungi, all busily absorbing carbon and releasing nutrients into the soil. Further ideas for reducing the carbon footprint of your garden include composting garden and uncooked vegetable food waste, recycling canes and flower pots etc, growing plants from seeds, and using hand rather than power tools – https://www.gardenersworld.com/how-to/grow-plants/how-to-reduce-your-carbon-footprint-in-the-garden/ Or visit the RHS web site https://www.rhs.org.uk/gardening-for-the-environment/low-carbon-gardening/the-low-carbon-garden
“When we garden, not only do we make the world a more beautiful place, we also improve local biodiversity, cool overheated cities, mop up pollution and mitigate against flooding, all while improving our own health and well-being, which together have been shown to directly determine how effectively our society functions. Plants are key solutions to pretty much every major problem that faces our species today.” https://www.theguardian.com/lifeandstyle/2022/feb/26/green-planet-how-gardening-can-save-the-world
The Green Tau 
