Querkus

Querkus was the home planet of a race of giant moving trees that was invaded by the Daleks.

History
Querkus was planned to be colonised by Humans but they abanded it after finding out that it's forests could kill. Centuries afterwards, the Second Dalek Empire invaded Querkus as with it's vast resources, it's strategic position meant that it would be the perfect base to establish an new front in the war against Humanity. A Dalek scout craft was sent and at first encountered no trouble but within moments they were attacked by the Death trees, the Dalek's blasters were near useless against them. The Death trees used their incredible strength to rip open the Dalek scouts and crush the Kaled mutants inside. This attack enraged the Dalek Supreme, who sent a battle cruiser which wiped out all life on the world with cobalt bombs. It was only weeks until millions of Daleks came flying out of the production factories. (DWBIT: #47)