damn sapling thing keeps appearing between paving slabs

[CurlyhairedAssassin]

I've had what looks like a tree of some sort trying to grow between a couple of paving slabs for the past few years. It's impossible to pull up, even when it's been very small, and I've tried just cutting it off at ground level but it keeps coming back eventually.

Since last autumn I've given it up and tried to ignore it, with the result that it's now waist high and getting new leaves on so I obviously need to do something about it. Without lifting the paving slabs and digging it out, how can I kill it off forever? Would a normal weedkiller have any effect?

Cut it as low as you can then paint the stump with neat Jeyes Fluid.

We had a sycamore coming up between some cracks. It is now firmly dead.... I used th following 'secret' recipe I have developed...

Some boiling water [1/3 pint?]
Good slosh of vinegar [1/4 pint?]
Salt [2 tablespoons?]

Mix thoroughly and pour on sapling...... [I hate killing trees.... but I didn;t want my garage to fall down...]. Do in sunny weather so it doesn;t wash away.

I found the leaves all died after a few days and after a week or so the remaining stem wash brown and mushy.

Hopefully it is now gone..

Not sure hpw ethical this is but is toddler safe...

Thanks mumble

Think our's looks like a horse chestnut - how on earth has a conker got between a tiny crack?

Thanks for the advice - haven't got any jeyes fluid so will probably try Mumble's evil recipe - mwah ha ha!

Mind you.......while we're on the subject of killing off perfectly good, natural living things, would Jeyes fluid work on a tatty old tarmac path that is more green from moss growth than it is black? Think the previous owners did a crappy DIY job, and it's sooo pitted that it's a haven for moss. Can't afford to get it redone at the moment, so would Jeyes fluid all over it kill off the moss?

It would certainly kill all the worms in the surrounding soil where it washes off . Do you have a pressure washer - or does one of your neighbours have one that you can borrow? Alternative is a stiff brush and water...