Wednesday, May 14, 2008

Fennel-Unknown problem

Another delicious smelling sample- fennel (Foeniculum vulgare). This sample presented with browning on the edges of stems at the bulb. The very oldest leaves are yellowing and dying. The main cause is likely that the plant is pot bound (roots are curling around at the bottom). There was no internal decay in the bulb and the majority of the foliage was fine. The bulb is incubating to double check.Above photo is a little bleached out, note that the Jiffy pot has been pulled away for the photo.

Cut edges are starting to brown as I took the above photo ~10 mins after cutting.

1 comment:

cultiv8 said...

Correct me if I'm wrong, but yellowing of the old growth is often a sign of a deficiency in one of the plant-mobile nutrients, right? (The nutrients that can be re-translocated within the plant.)

N, P, K, Mg, and Zn if memory serves.

Of course you're probably right - if it's rootbound it can do the same thing (in fact that could be part of the cause of a deficiency even). Right?