with vanilla minecraft trees, the leaves are only picked up, but with modded trees the wood and the leaves are picked up with mods such as forestry, thaumcraft, and biomes o plenty.

Actually the space using suggestion wont work, I use unlocalized block names for this which contain no spaces, as in the names used next to the "minecraft:" prefix for each block in this link, http://minecraft.gamepedia.com/Blocks - going to close this issue and push an update with some changes soon.

Can't based on blast resistance, also your other comment is a decent suggestion, looking at my grab rules now and pondering ways to make this as customizable as possible, considering allowing partial matches like that for the grab rules list.

Yeah noticed that with tropicraft wood I think, planks and logs both use Material.wood so theres no generic way to get around it IIRC. You'd have to add custom entries to the block grab list. I'll keep this issue open until I've confirmed that block grab list actually works.

Just a suggestion, if you don't want wood to get picked up by tornadoes, but planks to get picked up, you could make it recognize " wood" with a space in front instead of "wood" making both materials get picked up. This works because the item would have "oak wood" instead of wood being in front without a space like "wooden planks" . Would this work?

is it possible to base which blocks get picked up on block blast resistance?