Chervil: Leaves Turning Red

[shihfa]

Hello,

So far my 2 chervil plants have been growing fine. I even harvested some until recently, but in the past few weeks, some of the leaves on one plant, and most of the leaves on the other have been turning red at the tips. Does anybody have a guess of what may be happening?

Thank you!

 

[Chuck]

It's probably caused by a lack of phosphorus and/or trace minerals. When was the last time you fertilized the plant and with what?

 

[shihfa]

I thought the problem may be a lack of phosphorus, but I wanted to be sure because I read that too much phosphorus can be just as damaging as too little. It’s growing in a pot with potting soil, and it’s the first season that I am using the soil, so I have not added any fertilizer. I will see if I can get some bone meal to supplement. Thank you!