Tree identification please

Hello, I have hundreds of little trees coming up in my lawn and all over the garden. I have been mowing them down with the lawn but more and more keep coming up. They are very fast growing. This is the 2nd year, last year it was not too bad. As they come through the colour is silver but as the leaves get bigger, the underside is silver with the top side green. Where the leaf joins the stem there are small pointed leaves that curl a bit, appearing. A stem I have broken off about 2 foot long - the bottom leaf measures 7" wide and 10" long, so they are quite big. The leaf is ovate and cordate type if that helps. There doesn't seem to be a large tree around that is the same, which is why I cannot identify it. There are Aspens around though but the leaves are much smaller. If I left mowing the lawn for a month, these trees would take over. Please does anyone have any advice?

 

To be as numerous as this I think they must be suckers.
Can you try to gently pull one up?
Does it come out with roots at the bottom...OR does it just snap as it is attached to a root.
The grey underside and green top side would lead me to some sort of Populus.
That is a huge leaf.
Is there a stump of a tree in a garden nearby?
Stump roots can sometimes continue to grow and will send up a forest of root suckers. see pics in link below

http://keyserver.lucidcentral.org/w...030c0f01/media/Html/Populus_nigra_Italica.htm



Or they could be from a tree that has been grafted.
Root.. a common Populus...top part different...eg Aspen.

 

Thank you for both replies. I have tried pulling them up but they just snap off and are very strong. I have had a good look around and, talking to a neighbour, she said she had a poplar tree removed about 3 months ago. When I look at the results on the page they do look like that. But some were there last year before the removal of the tree. I have had a look at the poplar stump and it is full of the same sproutings and really high. If the little trees are from this then the furthest is at least 30 metres away. Do you think there is anything I can do to prevent this from happening in the future? They are really going to ruin the garden.

 

Forgot my manners....welcome to the forums!

That stump has got to be killed completely.
Left alone you will have a forest of trees in the neighbourhood.
The suckers will grow and grow until they are proper huge trees.

See advice here.

https://www.rhs.org.uk/advice/profile?pid=229

Copper nails hammered into stump are meant to kill it.

https://www.google.co.uk/search?q=c...%2F38739-copper-nails-eucalyptus.html;800;600

Or maybe others here can help.

 

I dont think killing the stump will stop the suckers.
You need to also treat the suckers, as Marley suggests, weed and feed for the lawn, although I'm not sure this is a good time of year for that, if not on a lawn, then glyphosate would sort them out.