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What is a Weed? And Why Wildflowers Aren’t Weeds

What do you think of when you hear the word ‘weed’? Join us as we uncover the myths #and delve into what it really means.

A close up of a pretty yellow flower against a background of blurred grass.There are five main flower heads in the shot and on the one closest to the camera is a bright green insects shining in the sun.

It’s a word we’re all familiar with, and one we hear often, especially during our annual No Mow Movement – ‘What about the weeds’? 

 The Cambridge Dictionary defines a weed as, ‘any wild plant that grows in an unwanted place’.  

If you were asked to picture a weed, perhaps some people would think of a Dandelion pushing up through the pavement, or a lone Forget-me-not lurking in your lawn. Many people think of specific plants as ‘weeds’, but that’s not true. 

So, join us as we weed out the myths of the word ‘weeds’. 

Common Wasp Queen on a Dandelion

What is a Weed? 

Here’s the thing – the actual definition of a weed is simply, “a wild plant growing where it is not wanted, especially among crops or garden plants.” 

Just a plant, in a place we didn’t choose. 

Technically speaking, any plant can be a weed. Even our most treasured native wildflowers such as orchids, simply for existing in a spot we decided they shouldn’t.  

So, what makes people think of a Dandelion as a weed but an orchid as a prized plant? It’s simply perception and context. 

A bright purple Thistle flower head is pictured in front of a large arable field growing crops

Where Did ‘Weeds’ Come From? 

The word ‘weed’ has been part of the English language since at least the 9th century.  

It’s believed to have come from the Old English word ‘weod’, which simply means a plant – including herbs or even trees. 

Over time however it took on more of a negative tone, especially as agriculture became more dominant and plants that competed with crops then took on the name. 

By the 19th and 20th centuries, with the rise of industrial farming and garden landscaping, ‘weeds’ became enemies. Something to spray, pull, or pave over. 

But in nature there are no weeds. Just plants doing what they’ve always done – growing, spreading, surviving. 

What About Non-Native Invasive Plant Species in the UK?

Non-Native Invasive Species aren’t weeds by definition, but they certainly can cause problems. 

Non-native plants are simply plants that have been introduced to the UK, that naturally grow in other parts of the world. 

Not all non-native plants become problems – many of them integrate into our habitats without causing damage (these are called ‘naturalised’ species). However, some thrive in our habitats, so much so that they out compete our native plants, these are known as Invasive Non-Native Species (INNS). These include common garden centre finds such as Rhododendron. 

One in five species of UK vascular plants are at risk of extinction. The second biggest threat to biodiversity is Invasive Non-Native Plants, so they must be taken seriously. 

Read our blog here to find out more. 

Common nettle

What About Problem Plants? 

While the majority of plants have value to wildlife, some can cause problems, mainly to other plants around them. 

Think of a thicket of nettles for instance, there’s not much biodiversity in the swathe as it has a tendency to takeover. While large amounts of such plants can cause problems, small amounts are  That said, it’s important to remember the benefit that plants, including nettles bring to our other wildlife. Nettles can be a great addition to your green space and support more than 40 different insects and butterflies! 

So, while problem plants aren’t necessarily ‘weeds’ we recognise that some plants could benefit from some careful control. Read our blog here, to find out how to manage problem plants such as Thistle and Common Ragwort. 

Rethinking the Weed 

We ran a survey recently and found that 56% of people think of Dandelions as a weed. That’s not a huge surprise – Dandelions have had a bit of a PR problem. But the truth is, they’re not ‘weeds’ but wildflowers. And quite useful ones, at that! In fact they were once revered as a cure all medicinal herb and even appear in ancient Greek mythology. 

Watch our video below to find out why we should rekindle our love of the humble Dandelion.

Dandelions are amazing! Did you know that Dandelions support more than 50 species of insects? Or that Dandelions have been used in medicine for centuries?

The good news? More than 90% of 19-24 year olds in our survey said they see dandelions and daisies as wildflowers, not weeds. This gives hope for the future of our native wild plants. 

Perhaps in the future we will all see ‘weeds’ differently – as part of a bigger picture. ‘Weeds’ are our native plants and part of the planet long before we were. They make up important habitats, improve biodiversity, provide food and even medicine, they even capture carbon! 

Let’s change our perspectives to see ‘weeds’ for what they really are, wildflowers that are symbols of resilience, beauty and wildness. 

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What is a Weed? And Why Wildflowers Aren’t Weeds
A close up of a pretty yellow flower against a background of blurred grass.There are five main flower heads in the shot and on the one closest to the camera is a bright green insects shining in the sun.

What is a Weed? And Why Wildflowers Aren’t Weeds

What do you think of when you hear the word 'weed'? Join us as we uncover the myths #and delve into what it really means.

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Orchid on the Brink of Extinction Returns to the Wild

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Why Did You Want to Start the No Mow Movement?

I have always been a big supporter of No Mow May and the No Mow Movement because I think it’s an incredible campaign for raising awareness of wildflowers and this is vital if we’re going to improve the available habitat for insects.

There had been an interest among staff in participating in the No Mow Movement, but really what spurred it on was the lockdown periods. During this time the contractors didn’t come in to mow the grass and displayed a little version of what could be.

Initially, we just wanted to see what was here naturally. The site had been manicured for many years, so the grass was incredibly short and flowers were not given the opportunity to bloom.

What Difference has it Made?

No Mow May area of longer grass next to mown path

To the Wildflowers and Grasses?

When we first left the site to grow in lockdown, we started to see wonderful flowers like Oxeye Daisy and Cuckooflower – things I know insects love.

Native wildflowers are most important to insects because these are the species that they have evolved alongside and they provide them with the exact food sources they need.

We have also done a little bit of enhancement and added Primroses and Cowslips to the grassland to provide an early supply of nectar and pollen for some of our spring pollinators. And then we’ve also added Yellow Rattle, which has probably had the biggest impact. The Yellow Rattle has spread throughout the 4 years that we’ve been doing this project, and it’s really made quite a difference.

I think my favourite flower is possibly the Common Knapweed because I love its bright pop of colour and seeing a bee really stuck face-first deep into the flower is really satisfying.

Cinnabar moth on some grass

To Insect Biodiversity?

One of my favourite things about us participating in the No Mow Movement has been the insects that we’re recording, including things that were not here before.

Everything from butterflies to moths to beetles and bees – and one of the biggest noticeable differences is the number of butterflies in recent years.

We’ve recorded 16 species of butterflies on our site during this period. They’re not all breeding here but that number is almost half of the butterflies recorded in Scotland, so that’s pretty good going! And because we’ve allowed our areas to grow, we found that we have a wonderful population now of Small Skipper butterflies.

The adult butterflies really need the floral resources to get the pollen and nectar. But their offspring need some breeding habitat, so the diversity of grasses we have are really important.

Common Wasp Queen on a Dandelion

And the People?

I’ve loved being able to work with my colleagues out on the grounds and interact in different ways than we usually would. It definitely has the mental health benefits to many of the staff and volunteers.

Also, the sounds of nature. Sitting near the meadow on your lunch break and hearing the grasshoppers and seeing the butterflies dance along the meadow – it’s a really nice experience.

There’s also a feeling of satisfaction, knowing that we’ve made these changes and they’ve been really positive.

What Does No Mow May Look Like at the Museum?

The management plan that we developed has totally rewritten what was happening here before and we have transformed the site during the course of the last 4 years.

Instead of the grass being cut every 2 weeks, we have just particular areas of the grass that are cut. Most of the grassland is left and we just have edges of the green spaces, the perimeter of the site and then designated pathways cut during the growing season. We also leave areas long all winter to create habitat for wildlife.

It’s been a delicate balance of trying to make sure that we’re enhancing the biodiversity but not disrupting any access.

No Mow May area of longer grass and wildflowers in front of large building

Where are you Doing No Mow May?

The National Museum’s collection centre is in the north of Edinburgh in an urban area. Our site is pretty unassuming – it’s an urban plot that is a series of buildings with green spaces laced between them.

But we have become a little bit of a green haven for the local wildlife.

As an institution, the No Mow Movement really nicely aligns with our aims as we research biodiversity, particularly Scottish insects, which is one of my focuses.

And of course, we’re very concerned about the environmental and biodiversity crisis right now. So doing something more with our own green space that we have was a natural way forward. I really hope that what we’ve done on our site can show other organisations what’s possible.

 

What Wildlife have you Seen?

If I had to list everything that we found, we would be here for a very, very long time. We’ve got countless moths, butterflies, bees and bugs including:

  • Moths – Cinnabar Moths, Burnet Moths and Poplar Hawk-moths
  • Butterflies – Small Skipper Butterly and Wall Brown
  • Bees – Red Mason bees and Cuckoo bees.
  • Wasps – Jewel Wasps and some different parasitic wasps (every year we record more of those)
  • Shield Bugs – Parent bugs and Hairy Shield bugs
  • Other bugs – Ladybirds and ground beetles

With insects being more plentiful, that’s also been great for the birdlife and we’ve had Blue Tits and Great Tits nesting on site and foraging, collecting caterpillars for their young.

We’ve also had a number of mammals, some of which can’t be recorded in the day. So, by setting up camera traps, we’ve been able to see some of the nocturnal wildlife, predominantly that’s our foxes.

Small Copper Butterfly on wildflowers

Why Does the No Mow Movement Matter?

The biodiversity loss that we’re facing and biodiversity declines that we’re seeing are a very real and quite scary issue.

Now more than ever, it’s so important that we use any little scrap of space that we can to make things a little bit wilder and support our biodiversity.

By participating in the No Mow Movement it’s given us this whole opportunity to look at the insect life and our biodiversity right on our doorstep at the Collections Centre in a totally different way.

It’s clear that by giving power to the flowers and encouraging those native grasses can have a huge impact on our insect biodiversity.

More about the No Mow Movement

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