starting off a Greenhouse
 

After several years of procrastination I have finaly got myself a greenhouse.
(a straight swop for an old computer). Can anyone give any advice as to what I
should start off growing, as a novice. Also I bought myself a Parsene heater
for it today from B&Q, was that a good move or my first booboo? I was thinking
of starting off some sunflowers, tomatoes and cucumbers soon, what else would
be easy for me to experiment with? I would like to try some colourful flowers
that could be started off then moved out to the Garden when the fear of frost
has gone. Are there any things I should definately not do??

Ivor K