Those Amorphs can really put on growth when they want to. I recorded these rates of growth at various different times for my largest paeoniifolius this season:
52 cms (20.5 inches) in 3 days
4.5 cms (1.8 inches) 9PM to 4 AM
6.5 cms (6.5 inches) morning to evening
But when it stopped, it definitely stopped, at 2.27 metres (89.4 inches). It's been sitting at that height for nearly 3 months now and still looking good. It's going to be interesting to see the size of tuber it's producing.
These are so exotic looking. I love them!! A friend gave me a small amorphophallus 'konjac', but I didn't protect it well enough and lost it over a particularly nasty winter. As soon as I figure out the logistics, I'll try one again.
Rachel, I used to only have the one large A. paeoniifolius which flowered regularly without being looked after. But tree roots got into the pot and last wet season ended too quickly so the plant finished its cycle early. When I took the tuber out it had shrunk a lot. So this season I gave it and some others a lot of attention and they've responded. Next season I'm hoping for lots of flowers again.
I like Typhoniums too, I have at least two species growing naturally on my place.
I had two seeds of A. konjac sent to me but they've been in a pot about 6 weeks and still no sign of growth. They were supposed to be a bit old, guess maybe too old.