JWWC said:Here's the picture of the center of the fan. It's still growing - the green and half dead leaves were both grown over the last 2 weeks.
Thank you for the photograph. It is not trying to go dormant. The leaves are aging, (senescing) but they do not seem to be senescing normally. It appears that the tips of the leaves are senescing but that the bases remain green for longer and are senescing much later. I would have expected the entire leaf to start to yellow before becoming as dry as the tip portion of the leaves in the photo.
JWWC said:The lights are on for 14 hours a day most of the other seedlings and the other plants are doing fine with the setup.
A day that is 14 hours long should be enough to keep it growing. Although the other plants are doing fine with the same setup, because every cultivar or seedling is genetically different, there can be plants that are not fine with the same setups. I would expect that to be less likely with a 14 hour day but more likely if the day had been 12 hours long. The day length is not likely to be a problem.
JWWC said:Temp varies from 64 at night to 68-70 during the day.
The temperature seems warm enough for daylilies to grow well. Some daylilies I have growing at 59F (during the day and cooler at night) are growing so slowly that it is very difficult to see that they are growing at all but they are not drying or senescing in the same way as the one in the photo. The temperature is not likely to be a problem.
Are the lights incandescent or fluorescent or something else? How close to the leaves are they?
How many plants are showing this problem? Is there any pattern to which plants have the problem, by location, by ploidy, by age, by soil, by pot size, by registered foliage (DOR, SEV, EV), by parent, etc?
