Failing Poinsettias

Asked November 13, 2016, 3:46 PM EST

Hi - at work we have two poinsettias from last year's holiday season we are trying to have 'rebloom' once again. Both plants were doing well until we began the 12 hours on (light)/12 hours off (darkness) in early October. Also, since the beginning of October, I've been taking the poinsettias home over the weekend to keep the cycle going. A couple of weeks ago, we noticed some leaves developing white patches, with parts of them turning brown. There is also a Gerber daisy in the office that seems to be doing the same although we're not doing anything to limit the Gerber daisy's exposure to light. I've looked for insects and noticed a couple of tiny white flecks but am unsure what they are. I've attached photos of the poinsettias. Thank you in advance for any suggestions you might have.

Howard County Maryland

1 Response

We viewed your photos. This time of year poinsettias grow best in bright light and will lose their leaves in the dark. They are not that easy to get them to flower again. They are most likely in a vegetative state and you may not see flowering. It is fun to experiment though. Look at the link on poinsettias for proper care throughout the year. You may have to buy some new plants for the season.

Gerbera daisies - Growing them indoors during the winter is difficult. They generally require a limited sunny window with supplemental lighting, temperatures of 50 to 70 degrees F and regular fertilization. See the attached link. They are considered a short term houseplant.