The message
from Sacha contains these words:

We're just getting round to putting in tulip bulbs now. BTW, has anyone
else heard/read/known that burying them about 8" deep makes them display
better year after year?

Yes it was on the TV last week/week before. Cannot remember what
programme though.

Looked hard work said she was growing them for cut flowers.
Sorry to be vague put it down to age. ((
Jennifer