Stop the Spread
No it’s not about butter…but tree pests, diseases and invasive species in general. This is the subject of a ground breaking garden at this year’s RHS Chelsea Flower Show.
“The garden will also have a black pool of water with a small living oak tree on a plinth in the middle at the end of the dead avenue.”
The National Trust has joined other organisations as a partner in the Food and Environment Research Agencies (FERA) garden designed by Jo Thompson to help raise the profile about the increasing threats we face but more importantly what we can all do about them.
The modern world we live in and our globe-trotting lifestyles combined with our increasing desire for ever more exotic food and plants is only increasing the chance of new pests and diseases and non-native species threatening our countryside, woodlands, forests and gardens.
“be prepared to be shocked… as there are dead (non living) trees at Chelsea for the first time…yes really!”
Since 2003 the National Trust has had to spend around £1m to deal with one disease alone, Phytophthora ramorum no small amount for a charity in these challenging financial times. But add in another 14 or so tree pests and diseases including the dreaded news making ‘Ash dieback‘ and the constant battle to keep our waterways and countryside clear of non-native species which sucks in vast amounts of staff time dealing with what is often a ‘fire fighting’ exercise, you can start to see why the Trust wants to help make a difference.
So was born the idea of working with others to raise the profile of these issues at the most famous garden show in the world, which in it’s centenary year is set to be a media show stopper. But, be prepared to be shocked… as there are dead (non living) trees at Chelsea for the first time…yes really! If you don’t believe me and you can’t go in person, check out our videos of the garden at www.nationaltrust.org.uk/chelseaflowershow or tune in to watch some of the television coverage which will be on BBC2 every evening of Chelsea week. The garden will also have a black pool of water with a small living oak tree on a plinth in the middle at the end of the dead avenue.
But there is beauty as well as we know that this is not a lost cause and we can all do things to help prevent the spread of plant pests and disease.
Here are my top tips of some things we can all do to help ‘Stop the Spread’:
Taking some simple steps when gardening or buying and planting new trees, can help reduce the risk:
Ask your nursery/garden centre for help: Wherever possible, buy home-grown trees and plants; they’re more likely to be “acclimatised” to our conditions and less likely to be a home for new pests and diseases or non native species. Don’t bring plant material home from holidays abroad.
Buy small and watch it grow. Semi-mature trees often grown overseas pose a higher risk of introducing pests and diseases. So be patient and plant smaller trees instead – they’ll often establish quicker too.
Right plant; right place. A healthy tree or plant is less likely to succumb to disease – try to match a tree to its preferred location, type and size of tree, soil type, available space.
Help it to establish itself. Feed your tree but avoid over-feeding which can lead to vulnerable soft growth. Consider a mycorrhizal fungi planting treatment to encourage healthy root growth. Use a good stake and tie, but don’t strangle your tree! Lower leaves in contact with the soil risk picking up disease, so remove them when you plant or use a good mulch.
Give it room to grow. Space trees as widely as possible to ensure good air movement and reduce humidity. Prune out any dead and diseased branches and dispose of the waste sensibly.
Keep clean. Pests and disease are easily spread on soil and plant debris attached to footwear or on tools like secateurs and saws, so clean mud and leaves off regularly.
Don’t stop planting. The worst thing we can do is to stop planting trees. Simple measures like those above will help protect our beautiful woodlands and forests in these difficult times.
Dispose of garden waste responsibly. Compost your waste properly or dispose of in a responsible way. Don’t dump garden or pond waste in the countryside or water courses
Top tip: When buying look for: healthy, vigorous trees and plants, not pot bound, not too much soft growth. Avoid signs of dieback, leaf spotting, insect infestation and mould growth. Look out for other non -native species species hitching a ride.
- Ian Wright is the National Trust’s Gardens Adviser based in the South West of England. He advises on all things horticultural at the 30 great gardens in the South West. He has built up an extensive knowledge of plant and tree pests and diseases over his 26 years working for the Trust and in more recent times produced guidance for staff aimed at preventing the spread of pests and disease. Ian describes himself as ‘almost a tender perennial’ and now ’lacking the appetite for true British winters’ after working in the favoured climate of the South West for so many years. Potential sponsors take note… Ian’s greatest dream is to design a ‘Gold winning’ show garden for the National Trust at Chelsea…..any offers?
- The Weekly Witter is a regular weekly mouthpiece for our many specialists to talk about the news, current affairs, and what’s on their minds at the moment.