Put all the vegetables in a large bowl and sprinkle with salt.
Cover with cold water and let stand for 2 hours.
Drain vegetables well, then press out as much liquid as possible.
In a large pot, combine sugar, vinegar and seeds.
Bring to a boil and add vegetables.
Bring back to a boil and simmer for 10 minutes.
Ladle into pint jars according to standard canning procedures.
Process in a hot water bath according to your altitude (10 minutes for up 50 at 1000 ft.).