Propagation: Hardy Hibiscus seedlings sick, 0 by CoreHHI

CoreHHI wrote:
I'll toss in my two cents. Your seedlings look like cold got them. I've had that exact thing happen to tropical hibiscus I have planted outside. Mine die off and come back in the spring but I have exactly the same looking leaves that are curled up like that. I would say cold got them and there isn't anything you can do.

Someone asked how big they should be to put outside. After the last frost and I would make sure the roots pretty well fill up that cup and you'll be fine. Mine grow like crazy once the day time temps start hitting 80. For me it seems to take about three years from seed to full size. It does depend on exactly which variety you have, some stay fairly small other will end up 6ft by 6ft or so.