I bought three houseplants from Ikea back in the spring. They sit on my kitchen window ledge. They haven't really grown throughout the last 6 months, but they haven't died either - which for me is a small victory over botany. Now, all of a sudden they are enjoying a big growth spurt. At least a few inches over the last week. I'm confused as it's cooler and darker now we're half way though October. Has anyone read 'Day of the Triffids' by John Wyndham?