in wet, moist dirt
Insects that feed on garden worms include beetles, centipedes, and ground beetles. These insects help regulate the population of worms in the garden ecosystem. Additionally, birds and other small animals may also prey on garden worms.
There are many invertebrates in the world but I would just specify the most common invertebrate worms, slugs, octopuses, spiders and ants.
your soil would be bad earth worms help the soil
They are useful because worms chew your food and turn it into garden fertilizer.
To create a thriving garden ecosystem with live garden worms, you can start by adding organic matter like compost to your soil to provide food for the worms. Make sure your garden has good drainage and is not compacted. Avoid using chemical pesticides that can harm the worms. Regularly water your garden to keep the soil moist, as worms need moisture to thrive. By creating a healthy environment for the worms, you can help them improve soil quality and promote plant growth in your garden.
worms
If you find long black worms in your garden, it is important to identify them first to determine if they are harmful or beneficial to your plants. Some black worms may be beneficial for soil health, while others may be harmful pests. You can consult with a local gardening expert or extension service for proper identification and advice on how to manage them effectively.
garden or a rose garden
Grub worms can be harmful to your garden because they feed on plant roots, causing damage to your plants. It's important to control their population to protect your garden.
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.