Is HOTBIN too Hot for Worms?

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Is HOTBIN too Hot for Worms?

Do you have worms in your HOTBIN?

If you do... all is good. It's reassuring to know that worms are not essential for the HOTBIN's composting process, but they can be a welcome addition if they show up. Red worms and white worms (enchytraeids) often find their way into the HOTBIN and contribute to the breakdown of organic matter.

While bacterial activity is the primary driver of composting in the HOTBIN, worms help create nutrient-rich vermicompost. White worms, though harmless, may indicate too much moisture in the waste, which can be corrected by adding more dry materials like shredded paper or cardboard.

Their presence reflects a healthy system, but if adjustments are needed, they're relatively simple.

How do worms get in the HOTBIN?

Worms or their egg casts can enter the HOTBIN through soil, old compost, or leaf mold, just like slugs and snails. Tiger worms, which are commonly found in leaf mold, play a key role in decomposing organic material. Even though the HOTBIN is a sealed unit, worms are often introduced during the setup phase, especially in the base layer. While not necessary for the HOTBIN to function, their presence can be beneficial to the composting process.

Can the worms survive the hot temperatures?

No, worms and their egg casts cannot survive the high temperatures inside the HOTBIN once it exceeds 95°F. The HOTBIN creates different temperature zones, with a cooler base layer where worms may survive, while the upper layers become much hotter. In the cooler base, worms can continue to thrive and may even increase in number, especially during the spring, when the base layer remains suitable for breeding, providing enough food and a comfortable temperature.

Worms are crawling up the walls and over the lid?

If you notice worms crawling up the walls or over the lid of your HOTBIN, they are likely trying to escape the rising heat as the temperature inside increases. In search of cooler areas, they may head down to the base layer or try to exit through the aeration plate. Alternatively, they might climb up toward the top of the bin and get trapped near the lid.

At this point, it’s up to you to decide what to do with the worms. You can leave them, return them to the cooler bottom layer, or even feed them to birds if you prefer.


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