In order to induce early flower bud formation in my Ipomoea nil plants, I subject the young plants to short-day light treatment (or long-night treatment). Japanese scientist, Dr. Yoshiaki Yoneda, described on his morning glory web site that if young plants are put into complete darkness for 14 hours over several days, up to a week, the plants will make flowers 20 to 30 days earlier than plants grown in a normal way without such light treatment. The total light blackout must not be interrupted, otherwise the desired effect will not be seen.
Notice I have taped small pieces of cardboard to the corners of the box and handle holes of the box. This is to block out any light through the small holes of the box I had on hand.
Tuesday, April 23, 2013
Short-Day / Long-Night Light Treatment Method