REFERENCE:
Cereal Grains for Yard & Garden
All Things Gardening forum
date of post: Jun 11, 2019
" The scan of the cob below was taken from a plant grown in a large pot along with 2 or 3 others for pollination. " [2018 harvest]
Some of these kernels were sown on 29 June (see post below for Sep 2, 2019)
date of post: Sep 2, 2019
" Here's a pic of Painted Mountain maize which I sowed in this large pot on 29 June of this year (the pot with the tape measure in it). The height of the tallest plant is just at 48 inches and two of them started to tassel about a week ago. There are 4 plants together in this pot, which measures about 14 inches wide and 16 inches tall. Plenty of time yet for the cobs to mature before the first expected frost of about mid November in this part of Oregon."
Here's a scan of 3 cobs that I harvested today. One cob is still immature and will be harvested later.
From time of sowing until time of harvest :
29 June to 14 October = 107 days