RichardNailder
Approved Content Owner
I'd love to grow jalapenos since the closest thing I can get is in jars...but it just doesn't get warm enough. I think that's why I've had trouble with tomatoes the past 2 years, just not enough heat/sun without a greenhouse.
I can show you how to make a simple cold frame that will let you grow peppers in Holland - I was able to grow them using cold-frame when I lived in the Eifel mountains which is about 800 meters higher than you are and almost as far north. Tomatoes are a bit of a problem because of the size of the plants. If you have a protected porch - hanging tomatoes can work well - especially with a variety like yellow pear http://www.google.de/search?q=yellow+pear+tomato&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
They are fairly early (75 days), taste wonderful and grow wonderfully as a hanging tomato http://www.google.de/search?q=hanging+tomato+plants&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&hl=de&tab=wi&biw=1236&bih=732