Sweet and Chilli Peppers

[Digger Don]

I have some nice little seedlings of both types of peppers and was just thinking of where to plant them in the tunnel when I read the following in The Fruit and Veg Gardeners Handbook;
"Never grow sweet peppers and hot peppers in the same greenhouse, because the cross-pollination which may occur would have disastrous results"
Now I may be dim but what sort of "disastrous result" could be expected? - will my tunnel explode?

[Alison]

If you're collecting the seeds then you need to be more careful as you could get cross pollination. However, if you're simply growing for fruit then you'll have no problems at all. I grow mine together every year and it's fine.

If you still want to collect your seeds then you'll have to provide an isolation cage around the relevant plants to ensure no cross pollination.

[rustylady]

It won't affect this year's crop at all. However, if you save seeds from the peppers you've grown to sow next year then you won't be able to guarantee whether they will be sweet or chilli peppers. On the other hand, you may come up with a worldbeating new variety.