Anyone one have any ideas on how to make this look realistic. I used color correction in the translucency swatch I took the main bitmap and made orangey, then I instanced it in the refraction swatch.
Here is the file and the scene
I’ll give it a try, thank you.
It’s look like leaves veins are in wrong direction
Well spotted, astudio 
Looks like the texture is flipped.
I tweaked your material a little bit. Obviously there’s a room forimprovement even more, but for now it should do.
Scene is there: https://saugykla.teo.lt/Shares/Home.aspx?ShareID=9159e741-d8d5-4587-be4e-6fe6bf619ae6
True, I didnt notice. I have to look closer!
That looks totally awsome Romullus! I am going to take a close look at your material slot.
Below are other tests that I been doing in regards to leaves and translucency. The bad thing is that I am testing with flat models (leaves), it would be nice to have concave leaves. But in these examples I managed to get just a tad of translucency and warmer colors where light seems to pass. Please feel free to crit. Oh and sorry for the bad renders, I have a slow machine, but I rendered regions in places that are of interest.
I think leaves should have more “juicy” yellowish colour where the light is passing through. Some more reflectivity and a subtle bump map could also help. All these things are probably dependant on the kind of plant you are referring to. 
And yes, better geometry (for example leaves bending in some direction) would be nice.
Here are some examples:
I think it’s a mistake to tweak such materials in HDR lighting and/or taking closeup renders. Most of the time, at least in archviz, vegetation is going to be in the background and as such should look convincing when scattered across a wide area and should work with the most simple lighting.
Threads on this subject usually have a trend of showing off nice closeup shots of leaves lit with nice HDR lighting which IMO begs the question, are you actually tweaking a material or just showing off something that works in strictly controlled environment? Also it’s extremely easy to get a material to look organic when you use an overcast lighting, but as soon as you introduce bright sunlight to the equation such materials oftentimes break down. My suggestion is to show how your material works in both overcast and sunlit conditions when doing these tests.
Is corona capable of doing this?
I agree with you, I think it also has alot to do with your HDRI exposure you decide to use. With some of them (that don’t work) I do get out of whack colors. With the VIZpeople HDRI there is minimal differences in color varience. Color correction (map) is a key controller to have, because you can de-saturate as needed depending on the scene. But I totally agree with you, direct sun light is probably the best solution for making materials. The translucency will be the same in both scenarios, its just the color one has to watch out for. Here is a render from the tree without the HDRI.
Can anybody share their material composition for leaves/plants?..Thanks!
Yes, see the gallery on homepage
Impressive Maru’ thank you for showing, I have to try this. Can you show me your slate view?
Hah, there is no real reason, that’s because I was doing it very quickly and dirty.
Its look Awsome Maru, just like in the movies http://img2.tvtome.com/i/u/4590d3ec9f3442bbc2886089f36c2dc7.jpg
I am going to try this can you show me your slate view, please.
Thanks!
You can save a LOT of time by instancing maps as much as possible in shadertrees and different slots of a single material.
That’s Ok, I totally get it. The params are the magic.