what to grow indoors in Sept

[lfcjohn]

Hi everyone, I am in need of some advice. I teach basic catering to men with special needs and have been offered the chance to utilise 2 huge green houses ( about 10m x 5m) to show the learners the joys, advantages and uses of growing your own. I am also hoping to get an allotment size plot of ground outside at a later date on the site.
The problem is that my employer wants to start the programme in mid September and I was wondering what I could start growing indoors at this time of year. The produce will be used in the catering class and I would like things that show some signs of growing at a fairly good rate to keep the men interested and show the boss some results. Come springtime I will be ok as I can get into a cycle as I do on my own allotment but I am after some quickish initial results. Any advice would be gratefully appreciated.
Thanks in advance
John
ps the greenhouses are unheated

[Jaxom]

Potatoes in pots inside the greenhouse will give you a crop for Christmas. you would have to start them now though. You could keep a few back to demonstate how it was done. a little like Blue Peter's "Here's one I made earlier".

[Snadger]

Lettuce can be grown all year round in the greenhouse!
This is my first year with three inherited greenhouses on my allotments and like you, I would like to utilise them through the winter. I already have my 'Spuds in tubs' for Christmas.
I am planting a few each indoors of stuff I am planting outdoors at this time of year! This will include Spring cabbage, caulis,kales,Japanese onions,garlic,broad beans,leeks,radish and possibly a few turnips which can be eaten as greens if they don't bulb up!
Bit of an experiment for me I'm afraid, but hopefully I should get a few early crops from it!

[momol]

For autumn harvest, you could sow some oriental brassica, they grow pretty fast ( 3 to 4 months) such as, pak soi, tat soi, cai sim, mizuna, mibuna... mustard. some herbs like leaf celery ( they can over winter in the green house too )parsley, basil & coriander. You could still sow some rapini, water cress, radish, carrot and all kind of salad.
It should be a lot which you could choose.

Have fun and all the best,
Momol