Worm species for worm composting

We obviously use species adapted to our climatic conditions.
Species used in Western Europe for example (mainly E. Fetida, E. Andrei) are endemic and adapted to the temperate climate. Worms used in warmer areas are different …

Let’s look at the big species used in the world.

Thanks to Quoc Huy Nguyen Dinh (The Little Worm Farm) for the pictures.

Worms can live between 1 ° C and 33 ° C. The optimal temperature is between 15 ° and 25 ° C.
The size of the adults is about 50 to 70 mm. They breed relatively quickly.
Both species are quite difficult to distinguish.

He can live in wider climatic conditions (he supports heat better).

Compared to Eisenia Fetida and Andrei: it is bigger, but reproduces less quickly.

It lives in conditions similar to E. Fetida, but supports better the acidity and the high temperatures.

Its adult size is about 120 to 170 mm.

It has a somewhat runaway behavior when introduced into wormcomposters.

It is pink to purple. it can reach 200 mm.
However, it breeds slower than E. Fetida and E. Andrei.

It is found in equatorial areas. It can not stand the cold of temperate regions.
The optimal temperature for this species is between 23 ° and 30 ° C.

They are “reddish-brown” or “purple-red”.
It measures up to 105 mm. It breeds rather slowly.
It adapts easily to conditions of high acidity (pH between 3 and 7.7) and also supports colder temperatures.

It has blue to purple reflections (hence its common name).
It measures at adulthood about 100 mm and is rather thin. It breeds very fast, consumes waste quickly.

They prefer warm weather conditions (20 ° – 35 ° C).

On the other hand, it is sensitive to the changes of conditions of its environment (humidity, acidity, …) and will have a tendency to fugue …