The efforts to get rid of a pink invader from the Eryri National Park are more of a "war" than a battle.

Throughout the week, volunteers and some employees of Cymdeithas Eryri have been in the Carneddau area uprooting the invasive Himalayan Balsam plant.

An area of nearly 220 square kilometers in the northern parts of the Eryri National Park, the Carneddau include high mountains and trails. There are beautiful valleys as well as rare species such as the red-billed chough, and wild ponies that are unique to the area.

But now, the Carneddau - like many other areas of Eryri - are being attacked by the Himalayan balsam.

"It's a big problem" says Mary-Kate Jones, Program Manager of Cymdeithas Eryri.

A charity established in 1967, the society protects, improves and promotes the beauty of Eryri by working together with other organizations within the National Park.

A beautiful plant similar to an orchid, Himalayan balsam became popular in the Victorian period.

But in reality, the pink invader is an alien plant that is suffocating the other native plants around it.

The efforts to get rid of a Himalayan balsam from the Eryri National Park are more of a

Mary-Kate said, “It's an invasive plant and when you know what it looks like you'll see it everywhere. It roots easily and grows very quickly. The seeds can travel up to seven meters so it can take over an area very easily."

In addition, the seeds can be carried downstream and attack a wider catchment area.

"It puts everything else in the shade and is better at competing for space than indigenous plants and species. It's eroding riverbanks."

With Himalayan balsam being a particularly good source of nectar, it can attract pollinators away from native plants and crops.

"It conquers other plants on many levels and as it loves a damp climate so Eryri is perfect for it - it's everywhere. But over a period of ten years we have had success near Bala, around Llyn Tegid. What is positive is that it is easy to remove with your hands. Balsam has no deep roots at all."

And this time of year is perfect for tackling the pink attacker, as it is now known on the ground in Eryri.

"It doesn't like hot weather, so after removing it we put it in a mound and then it withers and dies."

Our sister title, Corgi Cymru, wanted to know who wins the battle?

"I think it's a war, not a battle. It can take hold again in a few weeks so it's important to go back to the same place after finishing clearing, just to make sure.

"We have great groups of volunteers in many communities but we're always looking for more.

"This is a long-term project."