The best type of worms I've used in my garden are earth worms. Mainly night crawlers. They work really well for adding air to the soil. They do tend to multiply quickly. Good Luck.
There aren't many insects that eat garden worms. However, ants will eat garden worms that they find around the garden dead.
They are useful because worms chew your food and turn it into garden fertilizer.
get rid of the grass and put cement instead or use poisoning.
worms
With an outdoor garden the type of plant pots you use is important. You need to use pots that are weather proof and sturdy.
can earth worms be put directly in garden
Usually you will see them.
If by 'garden snake' you meant Garter Snake (Genus Thamnophis) - then yes. Worms are part of their natural diet.
The thick green and black striped worms in a flower garden are cut worms, also called horn worms. These do not harm people but can devastate a garden. They are known for eating tremendous amounts of vegetation overnight.
yes
they will be dead
Worms play a big part in keeping the soil aerated , heathy and to some extent fertilised for plants, if there are worms in the soil it usually means you can grow a good garden. If you want an improved answer to this question, type into the answers box " what do worms do to help us".