Weird weed in lawn

Hi guys,

Anyone have any ideas what the weed is in the photos below and how to get rid of it? Its left patches where ive pulled it out but want to treat it somehow to get rid for when it (inevitably) comes back?!

Also - how do I get rid of clover in the lawn long term? We're overseeding our garden and so Ive gone along pulling out as much as I can which has left a lot of bare patches but don't want it all to come back

Thanks in advance for your advice

 

Hiya

I have done 4 in 1 weed, moss killer etc and it seemed to survive it just fine lol

 

It's difficult to tell from the pictures but it's either an Oxalis as FC has suggested or could be a Vetch. I would try Verdone Extra lawn weedkiller.

 

Could it be this?

http://www.lawnweeds.co.uk/black-medic.html

 

When you say you've been 'pulling it out' do you mean just away from the root base or the whole plant (WITH the root)? Makes more sense to get the whole plant out else it will obviously regrow. If you do not have a wide area of this plant then moisten the soil around it and dig it out. Kinder to the soil than killing off micro organisms with a chemical weedkiller.

 

Agree, it is Black Medick a common weed in lawns. Verdone, or a similar lawn weedkiller normally deals with it but it will keep returning so will need treating every year.

 

Some weeds are there due to poor nutrients within the soil. Often a weed and feed while it may tackle the problem does not help long term.
Once you have cleared the weed and for next season as its too late now think about a slow release fertiliser which will deter such weeds from returning.
You may have to visit a trade supplier for a good slow release fertiliser but a weed and feed is mainly known as a straight fert and the life span is short.
There are however some very good weed and feeds that would deal with this problem but you need to apply them at max so a good spreader calibrated correctly is the best way to apply them.
The other benefit of a slow release fert is that they combat to a good degree some of the more common grass diseases like Red Thread which is going around my area after this warm and wet spell. I'm seeing a great deal of it and as yet not a single customer has known they have it and just think their patches of grass are just from the dry spell.
Looking at the grass in your photos all be it they are not that clear I would say there's an issue there too.