Tropicals & Tender Perennials: Amorphophallus titanum blooming - Live webcam, 1 by tropicbreeze

tropicbreeze wrote:
A month later (2 months after planting) I had a shoot about 30 millimetres high (above soil surface).

Make sure you've planted it deep. I only planted mine twice the depth of the tuber height. As the tuber depleted and the leaf grew tall it became unstable. I had to support it with ropes. A few months ago I removed the ropes. The new tuber had developed to a size (and at a depth) able to support the leaf.