I notice that Fire Seeds seems to have some problems. I think it has the same Quicken bug Meteor Swarm has, i.e. if you turn the meta on via the spell icon on your hotbar you only chuck out two acorn grenades instead of three. The targeting also seems a bit weird, but I haven't done a lot of testing on this. And does the damage seem low? I get the impression it doesn't kill as reliably as Flame Strike, even though it should usually be doing more damage (8.5/lvl for Flame Strike vs 10.5/lvl for Seeds).

Flame Strike, otoh, is very reliable. I think getting flamestrike is when druid spell DPS really starts to get efficient.