On 26 Mar, 22:42, JMS wrote:
Grown in a tray on a window sill - they are much thinner than normal.
(They germinated very quickly within 7 days 23 out of 25 were through
and about 2cms high) - no under"floor" heating.

I saw on a programme tonight on TV the gardener was stroking the
seedlings to simulate wind movement - and thicken up stems

Is it worth doing?

I assume that when I pot on if I bury most of the stem, then it's
spindliness won't matter anyway?

Yes, bury the stems and roots will grow from the buried part making
the plant much stronger.

The wind experiment might work, as I remember being told by those
involved with the pitch at the Millennium Stadium, that one of the
reasons the grass struggled to grow there (in addition to the lack of
sunlight in parts of the ground) was when the roof was closed there
was no wind at pitch level.