Find a home for red wigglers
Check a sheltered spot before buying worms. You want a bin you can reach easily and keep cool, including during a Cyprus summer.
Vermicomposting means composting with worms. Red wigglers, Eisenia fetida, are segmented earthworms commonly used for this. With other decomposers, they turn food scraps and bedding (such as damp shredded cardboard) into vermicompost, a soil amendment. It contains castings (material the worms pass after digestion) mixed with decomposed scraps and bedding.
Decide whether a worm bin suits your waste
A bin can fit a small home and needs no routine pile turning. In return, you care for a living population: its food supply, moisture and temperature need attention.
Worms suit a modest stream of kitchen scraps when you also want compost for plants. Keep bulky garden waste and surplus food on another composting route. How much your bin accepts depends on the established population, feed and conditions; a large bin of new worms cannot immediately take a large weekly load.
Plan for Cyprus heat before summer
Cyprus has hot, dry summers. A shaded balcony can still be too warm. Red wigglers thrive at about 13 to 25°C according to Oregon State. Measure inside the bedding.
Test the intended location during the warmest part of the day and choose a cooler backup before stocking the bin. If the bedding warms beyond that preferred range, move it and reduce feeding. Moisten drying bedding gradually. Never add worms to an active hot compost pile.
Set up the bin and adjust each feed
This starter uses a clean, opaque plastic bin about 60 × 30 × 30 cm with a snug lid and about 900 g of red wigglers. Use a container that has never held toxic substances. These rounded dimensions and worm quantity follow Oregon State's small-bin example; they do not promise a processing capacity.
- Wash and rinse the bin. Near the top of each short end, make one opening about 75 mm across and fit a screened vent. Drill six evenly spaced holes about 6 mm across in the base for drainage. Leave the lid undrilled. Set the bin above a collection tray so its drainage holes and vents remain clear.
- Soak shredded plain cardboard or nonglossy paper for 5 to 10 minutes. Wring it out until only two or three drops emerge when squeezed, then fluff it into the bin to about half its depth, roughly 15 cm. Mix in a handful of healthy garden soil. Place the worms on top and give them a few days to settle.
- Offer a small portion of chopped vegetable scraps and cover it with about 5 cm of bedding. Keep meat, dairy, oily or salty foods, pet waste, citrus, onions and garlic out. Wait until earlier food is mostly processed before adding more.
- Check daily while the bin establishes. Pause feeding if much food remains or smells sour. Add dry bedding if it is soggy; mist it gently if dry. Check airflow and temperature if worms crowd the lid or try to leave. Do not routinely turn or stir the bin as you would a compost pile.
Keep the bin out of direct sun with air circulating around it. The vents, drainage and bedding follow NC State's household-bin design.
For 900 g of worms, roughly 225 g of scraps across a week is a calculated illustration using the low end of Oregon State's initial feeding range. Divide that into small feeds after the worms settle. Remaining food takes priority over the planned amount; do not add scraps just to meet it.
Using this same bin once feeding is established, suppose the damp bedding is at 22°C. You bury 100 g of chopped vegetable scraps on Monday. At Thursday's check, plenty of recognisable food remains, so you hold the next feed. Once that food is mostly processed, try a smaller 50 g portion. These amounts illustrate an adjustment, not a capacity recommendation.
Note the feed date, weight, bedding temperature and what remains at the next check. Those observations tell you whether to keep, reduce or gradually increase the portion.
Harvest the compost, keep the worms
Allow months for finished compost, even after scraps disappear: NC State describes a harvest after about four months. Look for crumbly compost with an earthy, fresh smell; conditions affect the timing. In NC State's sideways separation method, feed on one side for several weeks, then remove processed material from the other and replace it with fresh bedding. Repeat on the other side, then resume feeding across the bin. Return visible worms and egg capsules to fresh bedding. This method suits the household bin described here. Use the compost as a soil amendment for your plants.
Weed seeds can survive because there is no hot sanitation stage. Leachate, the liquid draining from unfinished material, can contain pathogens. NC State advises against using it on food crops, houseplants or sensitive plants. Keep it separate from harvested compost; it is not compost tea.
Continue learning
Sources and further reading
- Oregon State University Extension: Composting with worms: red wigglers, preferred temperatures, process, and timescale.
- NC State Extension: Worms Can Recycle Your Garbage: housing, bedding, feeding, and troubleshooting.
- NC State Extension: Extension Gardener Handbook: Composting: comparison, harvesting, use, and leachate precautions.
- Cyprus Department of Meteorology: The climate of Cyprus (Greek): local summer conditions.
Photo: Rob Hille, CC BY-SA 3.0.
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