Posted: 22/04/2013 at 05:37
Oh dear, don't give up - let's see if we can come up with some helpful suggestions.
Are you sowing them too thickly? That can make them shoot up too tall like the cress you buy from the shops.
You really need to sow seeds very sparingly indeed, so that each seedling has lots of space.
Also, they don't need much water at all - just need to be damp.