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I'm still new to Octane and I'm trying to understand its capabilities with regard to vegetation.

In my tests with some Corona tree proxies I created, I can get away with about 10 trees before I reach Octane meltdown. However, with the Forest Pack demo, I can scatter thousands of trees and they render fine. Since it is the demo/lite version, I'm restricted to one 3D tree they provided and I can't do any real-world testing. I find it hard to believe that their tree is that much more efficient.

My question is this: if I get Forest Pro, will it allow me to use my Corona proxies in the same numbers as their tree?

(Note that I'm currently only using a GTX650Ti)

Forest Pack Lite and Pro both uses correct Octane proxy for their arrays.
But i.m not sure you did the same with your own (definately i'm sure you didn't ).

To create Octane proxy select in contex menu 'Octane properties -> Movable Proxy [V]'. And then you can Instance this object any amount of times for correct proxy generation.
(added: here's tut's link: http://render.otoy.com/manuals/3dsMax_1_5/?page_id=182)

Also Multiscatter uses correct Octane proxy.

So you can place any plants without high memory usage (due to high poly count) with instances generated by:
1) your own
2) Forest Lite/Pro
3) Multiscatter
4) should be other methods i dunno, but upper ones work fine.

jscottsmith wrote:My question is this: if I get Forest Pro, will it allow me to use my Corona proxies in the same numbers as their tree?
(Note that I'm currently only using a GTX650Ti)

If Forest Pro allows you to plant custom meshes then if will let you settle tonns of'em, if not - Multiscatter can do your request.

Since it is the demo/lite version, I'm restricted to one 3D tree they provided and I can't do any real-world testing. I find it hard to believe that their tree is that much more efficient.

Just for info: with Forest Lite you can any 3D model, both from external libraries or your own models. Just assign it at Geometry->Custom Object.
You can find the differences between Lite and Pro here.