Earthing up fennel (etc)
I do this with some success so there is not really a problem.
But I wonder what is actually going on when the plant gets this treatment?
Does it stop the plant from bolting ? Or does it just blanch the bulbs? Does it promote extra leaf growth?
One thing I do think it does is that it can make the plants steadier in strong winds .
Also how high up should you heap the soil? Does it do a better job if you cover it right up to where the leaves (I mean the stems) meet the bulb?
Some of the bulbs that I have given this favoured treatment do seem to be particularly leafy.
And what about the ones that have grown tall and thin but have not actually bolted? Is there any point in earthing them up ?
Also how important is it to thin the plants out? I have noticed that the leaves seem to be very light and airy and so I suspect that they might not suffer from lack of light even when very close together .
Would it be alright to thin them out once it becomes apparent that they are not going to bulb up (leaving the ones that do seem to more likely to do so) ?