Ask the PlantMaster

What would cause day lilies leaves turn yellow and die off?

This has happened last year and is beginning to yellow this year. I would like to save them since they have been in the ground for a long time.

Soil that stays too wet for too long can cause leaves of Daylilies and many other plants to turn yellow, but so can soil that stays too dry. Remember that we've been in a drought situation for a while and if your plants are not receiving supplemental watering, they could be suffering the effects of drought during what is supposed to be their main growing period. Both extreme conditions cause the death of roots that leads to leaf symptoms. If your soil is being kept consistently moist then you might check for insects that are around the base of your plants that could be eating roots or leaves.

Thanks for your inquiry.

Happy Gardening!
The PlantMaster