As said above ;D
I use tufts - you can get 150 bunches of various colours/styles for about £5 on eBay - just bulk buy like £30s worth and they will last ages.
If you want to be a bit more experimental - use good old green stuff, it’s actually very easy to make your own flora (and they will be just how you want them)
What I do is go on google - search for the style of plants you want (in this case ‘jungle’) to see what plans actually exist - find a few you like and replicate.
Leave to dry overnight them cut/trim and add to your bases.
Some examples could be;
Vines - easy as hell to make (roll a thin snake like bit of green stuff and add parallel leaves to it - mark the leaves slightly with a tool and bamn done.
Big leaf grass/banana plant style leaves - take a piece of green stuff to the size you require and squash - aiming to have one end wider then the other (leaf shaped) score the length with a tool and across the width either side of this, make 3/4 leaves of the same type and bunch together at the bases - move leaves to required angles/bends/add damage etc and hey presto a decent sized plant that looks good.
Reeds/hot poker style flowers - create a tall thin stem to required height, add some small upright leaves at the base. At the top add a thicker rolled piece of green stuff - bamn a reed - make a few of these of varying sizes to hang close together - add a small water effect beneath them and you now have a swamp/pool effect with decor.
Water pools - Lizardmen love water - jungles often have water in them - pools are simple to make, leave a patch of your base clear at any shape/depth required (use basing sand/stones etc for the surrounds and to hold the water effect inside,
Paint colours where the water will lay ontop (murky browns/greens etc - (make sure to use brighter colours) add water effect ontop - let it dry overnight and add some white dry brush to bring out any ripples etc youhave in it.
I could go on and on lol - message me for more if you like