I read a little thing on the internet (forgot where it was) about Eucalyptus trees using their oils and hot weather to set other plants on fire, to prevent them from drinking their water. Meanwhile, the Eucalyptus trees' wood is so fire retardant it can ignore its own blazes. Maybe that's how Redwards work.
Now, if only we knew how Silversaps and Electreants work..... Kinda ironic considering Fire Lumbers seem to make the least sense because fire and wood normally don't mix.
Yeah I hate when fire and my wood mixes.