Posted: 05/09/2013 at 19:32
Sandra, those are both fairly tricky veg to grow well. Sweetcorn needs a good Summer in the UK and cucumbers (at least greenhouse types) are prone to a number of pests and diseases and need a lot of tlc. I would look for F1 seeds that have been specifically bred to be grown in the UK. These cost more but it's generally worth it. I had good results with sweetcorn 'Lark' a few years ago and cucumber 'Carmen' cropped well in the GH (but the seeds were over £1 each and only 2 of the 4 germinated!)
Are there any other veg you really like? I'm not saying you shouldn't try sweetcorn and cucumbers - everyone has to learn by actually trying things - but there are lots of easier things to grow as well - don't want you having a 3rd disappointing year!