THE MODERN MINT BLOG
To prevent future flooding there is a need to manage the land in a different way. The dredging of rivers will do nothing but speed up the flow of water to ‘pinch points’ further upstream. The use of sandbags is a measure provided too late, when normal life has been halted by water flowing into homes.
Natural Flood Management (or NFM’s) must now be considered a major part of flood prevention. The critical factor of NFM measures? The planting of trees to slow down running water.
By planting trees near headwaters they act as a buffer to hold up rainwater runoff. Planting woodlands near streams works in exactly the same way, slowing down the water. Debris from the trees can also fall into the river, creating dams that hold back excess water. These ‘timber flow interventions’ can even be man-made, by laying fallen tree trunks into the stream. These are far cheaper measures than building bigger walls to protect towns.
Trees also help water percolate into the soil (60 times faster in some research) although infiltration will be reduced if the land is already saturated. If this is the case, what options do we have then? Short-term, we are back to the sandbags. Long-term though, we lessen rainwater runoff rates from poorly managed land. How do we do that?
Treat our soil better.
We could stop winter sowing of crops. This leaves the soil bare for months. With nothing to bind it together it turns into mud when wet and leads to land erosion. The sowing of a winter ground cover would benefit the soil as much as preventing flood damage.
Stop compacting the soil with heavy machinery and too many animals walking over it. Compacted land works the same as any impermeable surface – it cannot take the water, so the water must just run off and down streets and into homes.
Add organic matter to the soils. They will hold more water, yet won’t become waterlogged.
Is there anything else we can do?
Don’t build houses on floodplains. This may alleviate housing shortages in the short-term, giving whichever Government bragging rights over what they have achieved while in power, but the problems will arrive later on… and money will still have to be spent on rebuilding, on rehousing, on healthcare for people who are having to live with stagnant water around their ankles. The costs will always catch up with us in one form or another.
Concrete and dredging are all very well – but we need to slow water down, and give it places to sit and be held when it does become to much.
We need to plant trees, we need to cherish and protect our floodplains, and we need to look after our soil.
More ways to manage the landscape can be found in these books… get them now, you will learn a huge amount!
Brought By Bike is an excellent website I found last month, where businesses offer their services by (of course) bicycle. Modern Mint and my topiary work is now live on the site offering my topiary services, via bike, to the following two postcodes – CM1 CM2 Now I can imagine I will need to borrow a ladder should anyone have a larger shrub, but most town gardens in the Chelmsford area have a need not just for privacy but to let light into the house… so a balance must be struck when shaping hedges and shrubs to cover both needs. …
Transforming Topiary – a video made for the European Boxwood And Topiary Society by Charlotte Molesworth and I, in her garden. We take a dog topiary and work out how to update it, turning it into a bird. Worth a watch I think, and hopefully useful to you! You can see more of my clipping on the topiary page. Or read my Spring 2021 Topiary Provocation here.
Phillyrea is one of my favourite plants for topiary. I have been using it for quite a few years as a specimen shrub, mostly due to the fact it clips well and has a tough habit – all good characteristics for a topiary plant. It also has a reputation for being an excellent nectar source for bees… Read more about Phillyrea here. Mentioning this to Malcolm Thicke, a market garden historian and writer, he sent me a some photos of topiary and phillyrea mentioned by John Worlidge in Systema Horticulturae from 1682…. incredible! He also mentioned to me that in …