Thanks for the in-put...
Did some searching on the web, most think it's good but some kill any thing in there pots except the plant. Almost all authorities on the subject say it's a good idea if you can get them to stay...
Here are some cool facts...
The most common garden earthworm, the nightcrawler (lumbricus terristris) is not native to North America and was in fact brought,over in potted plants by Europeans. Most of the native North American earthworms were killed during the last Ice Age 10 to 15 thousand years ago. This is one case of where the accidental introduction of a foreign species has been beneficial.
An earthworm can grow only so long. A well-fed adult will depend on what kind of worm it is, how many segments it has, how old it is and how well fed it is.
Worms can eat their weight each day.
An earthworm has no arms, legs or eyes.
There are over 2,500 different kinds of earthworms.
Worms can live wherever they can find food, moisture, oxygen and a favorable temperature.
There are about a million earthworms in one acre of land.
The largest earthworm was found in South Africa and measured 22 feet.
Worms tunnel deeply in the soil and bring subsoil closer to the surface mixing it with the topsoil. The sticky slime found on an earthworms skin, helps hold clusters of soil particles together in formations called aggregates. This slime is actually a secretion from the worm and contains nitrogen.
Worms are cold-blooded animals.
Worms can grow a new tail, but not grow a new head if they are cut off.
Baby worms hatch from cocoons smaller than a grain of rice.
Earthworms don’t have eyes, but can sense light, especially at their anterior (front end). They move away from light. If exposed to light for about an hour, they will become paralyzed.
If a worm’s skin dries out, it will die.
Worms are hermaphrodites. Each worm has both male and female organs. Worms mate by joining their clitella (swollen area near the head of a mature worm) and exchanging sperm. Then each worm forms an egg capsule in its clitellum.
