In this Topic:

The US chemical giant recently bought the world’s largest seed company, Pioneer hi-bred. Behind Dupont’s new interest in seeds lurks an intention to profit from new technologies that present multiple threats to the environment and public health.

Food, agriculture and the globalisation of trade
The industrialised food production system is being pushed into the Third World by global institutions that now make the rules on trade, with the consequence of more being left without enough land or income to feed themselves.

Organic- The corporate takeover.
The last decade has seen a phenomenal growth of interest in organic food, This has attracted the big corporations and international institutions, they are quickly moving in to take over the market and dictate the meaning of the term organic itself.

Also see:
Home > Growers Corner

Featured Projects:

Association Kokopelli
In defence of biodiversity

Plants for a Future
Rare and marvelous plants.

Primal Seeds exists as a network to actively engage in protecting biodiversity and creating local food security.

It is a response to industrial agriculture, the control of the seed supply and of our food.



In Defence of Weeds



E-mail this article

Bookmark this page

Printer-friendly version
Join us on our discussion forums, to leave your reactions, comments and questions.

Weeds cause a lot of thoughtless reactions, provoking misplaced fixations about cleanliness.
What are weeds? They are colonising plants. They are the first steps towards a balanced ecosystem. Growing where we are cultivating other plants, weeds are generally a symptom not the cause of a problem. Bare earth will inevitably be colonised by plants that are spread easily by seed such as dandelions, docks and brambles. If your first reaction is to pull out any of these plants in your garden think again, in the right place they can provide many useful functions.


These include:

1) Building fertility:
  • Weeds are the best source of mulch and compost material.
  • Deep rooting weeds like docks, dandelions, thistles and plantains bring up nutrients from deep in the soil that can be put back into the topsoil by cutting them for mulch material or composting.
  • Making liquid plant feeds, particularly nettles, also dandelion leaves.
  • Roots break up and aerate the soil.
  • Roots hold the soil in place preventing erosion.
  • Cover bare soil. This helps control soil moisture and temperature and prevents the compaction of the ground and the washing out of soluble nutrients (leaching).

2) Deterring pests:

  • Flowers of native plants attract beneficial insects that are predators of crop eating pests.
  • Cover provided offers habitats for beneficial insects.
  • Confuse and distract insects and other pests from crops.
  • Act as a sacrificial crop by getting eaten instead of wanted plants.

3) Providing for wildlife:

  • Cover for birds, insects, frogs etc.
  • Flowers attract bees and other pollinating insects. Many of the flowers bred and grown as ornamentals have flower shapes that do not allow native bees, butterflies and moths to reach the nectar.
  • Native plants provide important food sources for native wildlife. For example the larvae of native butterflies only feed on a few native plants specific to each species, these include some common garden weeds like thistles.

4) Helping to alleviate pollution:

  • Take up carbon dioxide and produce oxygen- the more greenery the better.
  • Absorb soil and air pollutants

5) Showing the presence of certain nutrients in the soil:
These are known as indicator species



Dandelion, Taraxacum officinale
Attracts pollinating insects especially bees. An important food plant for native caterpillars and moths of many species. Leaves excellent for liquid feed, mulch material and on the compost pile because they contain high levels of potassium salts. Long tap-root up to 1 metre brings up nutrients from low in the soil. The flowers can be used to make wine.

Clovers, Trifolium species
Clover flowers are an important nectar source for native bees, moths and butterflies. The decrease of the meadow habitat of red clover Trifolium pratense has been linked to the demise of native bee populations. They are excellent for ground cover and mixing with other plants that benefit from the clovers ability to “fix” atmospheric nitrogen.

Nettles, Urtica dioica
A very useful plant. Nutrient rich leaves make excellent liquid feed, compost activator and mulch material that breaks down very quickly. Young leaves cooked make a good substitute for spinach, very nutritious and easily digested. Is an indicator of good fertile soil rich in nitrogen and phosphates. Tea made from fresh leaves helps relieve hay fever in many sufferers.

Yarrow, Achillea millefolium
Repels insect pests and so makes a good companion plant. Useful as a liquid feed, compost and mulch ingredient. Is very tolerant of cutting and trampling. Growing widely it is an indicator of low soil potassium, a nutrient particularly important for fruit and flower formation. Correct this by adding compost, cut comfrey, urine, wood ash and seaweed meal. Dried plant said to make effective mosquito repellent

Fat hen, Chenopodium album
A common weed of cultivated ground that is also a tasty vegetable used like spinach.

Tansy, Tanacetum vulgare
A good companion plant in the garden, the flowers are very attractive hoverflies and both growing and dried plant repels flies, fleas, lice and ants. Particularly good around fruit trees where it helps deter pests.

Coltsfoot, Tussilago farfara
Has a very extensive root system, a good accumulator of nutrients. Leaves make useful mulch and compost material. Young leaves and flowers are acceptable in mixed salads with an anisseedy flavour. Is a popular herbal remedy for coughs and chest complaints.

There are a few real problem weeds that once established, can swamp everything else including native vegetation. These are mostly non-native perennial plants that spread vigourously at the roots. For example, Japanese Knotweed was introduced in Britain as a garden ornamental by the Victorians and is now next to impossible to eradicate.

Further Reading:

'The Massacre of Apple Lincoln'
by Pat Mooney
A tyranny of sameness is sweeping the earth. Why, because the chemical companies have discovered gold in genes.
'Colonising the Seed'
by Gyorgy Scrinis
Genetic engineering now makes possible the invasion into and control of the seed at the level of the gene.
'Hybrid rice in Asia: The unfolding threat.'
Until recently, rice was never commercially hybridised, there was no seed industry activity in rice. All of this is changing now and it will revolutionise rice farming in Asia.
'Wal-Mart’s arrival in UK is likely to spell disaster for local communities.'
by Andy Rowell
Wal-Mart is the world’s biggest and fastest expanding retailer. In order to become number one, Wal-Mart does its best to destroy the competition, and that’s not all it will destroy.
'Terminator technology: The threat to world food security'
by R. Steinbrecher and Pat Mooney.
The terminator rides to the rescue of long suffering multinationals who have been unable to hold farmers back from saving seeds.
'Apomixis: The Plant breeders dream.'
The agrochemical-biotech-seed corporations are investing heavily to develop this method of mass producing cloned hybrid seed much more cheaply. If they succeed there are frightening consequences on both biodiversity and the independence of farmers.


Enter your email address to receive site updates.