My first post to this group, I hope you can help - it's good to see it is
busy

Last couple of years I have been trying to grow a laurel hedge - roughly 10
trees (£6.99 ea. , so I started small) - Of the 10, probably 6 have taken
well, whilst the others I find are yellowing, and although there are new
shoots/leaves on them, their growth rate has been minimal..

Are they sick and need replacing or have I managed to mix some dwarf laurels
(if these exist) with the standard laurels?

Any help appreciated..thanks.