Compost and Vermiculture

The Current State of Compost

As of right now there is no composting program at Whittier College for food waste. Image_DiningServices_WEBCurrently, the Urban Agriculture club composts non-food waste items.
We know that composting programs have been implemented in the past for food waste from the Campus Inn and have not been successful. The hope is to create a new program that is continuous and will successfully reuse food waste as a compost in the SUrF garden.

While there are not currently any plans in motion to create a composting program, steps are being taken to curb food waste before composting is considered viable. Dean Perez is taking steps to create a waste management initiative that would quantify the amount of food waste produced by the CI and use that information to educate the students. Potentially, if this initiative is successful, the next step can be to then implement a food waste composting program throughout the campus.


Potential Plans For A Future Composting Program:

  • Placing composting “trash cans” in dorm kitchens, at the Spot, and in the CI
  • Posters created and placed above or next to the composting “trash cans” that specify what to compost
  • At least 2 work study students employed year-round with the sole task of sorting through the compost and educating the student body on what CAN and CANNOT be composted
  • Work study students employed to pick up compost and bring it to the garden compost bins
  • Creation of a marketing strategy to promote the compost bins around campus
  • Creation of a promotional and educational video to play on the POET TVs around campus and on this website





Why Compost? 

Compost can act as a pH buffer for both alkaline and acidic soils. It diverts matter from landfills. If we bring our compost to the SUrF garden on campus then composting will cut down gasoline use because less matter is transported to landfills. Additionally, another benefit of using compost in our own garden as a fertilizer or mulch is that valuable nutrients will be returned to the soil. This also means we will save money otherwise spent on trash bags and fertilizers. Without synthetic fertilizers, we will no longer have toworry about the risk of burning plants, as finished compost does not carry this risk. The soil in our garden will then be able to absorb more water and will have a soil structure that will help plants grow better. The plants will also have a higher chance of survival because of the beneficial microorganisms compost contains that help reduce plant disease. Lastly, compost can help break down and minimize the effects of toxic chemicals remaining in the soil from past chemical applications. Altogether, there seems to be few cons and almost only benefits that come from composting.why_compost

(photo courtesy of


Potential Savings From Composting

Composting will cut the amount of water needed in the urban garden in half. Based on research. If our urban garden is using approximately 5,000 gallons of water a month, we will cut this down to 2,500 gallons a month, saving money and, more importantly, water. We will also save money on fertilizer that must be used around 3 times a year. While this only saves approximately $50 each time the garden is fertilized, this will slowly begin to add up as the composting program continues.

For more information on potential savings and why composting matters, visit


Vermiculture: What it Can Bring to Campus

Here are some calculations we did to see how much food we could be sustainably disposing of with WORMS!

The cost of worm bins for food compost range from about $100-$115. red_wiggler_worms_in_vermicompost_cc2_looseends_flickrSay we are to implement 5, (in areas out of direct sunlight)- costing us around $500, or we could DIY it (Do-It-Yourself), and get a plastic storage bin and poke drainage holes in it- costing us around only $150 total (for all 5). We would be taking the un-eaten/otherwise wasted food from our Campus Inn, and transforming it into nutrient rich soil, then putting it in the garden to help the plants grow- saving us money that would otherwise be necessary to buy that soil. We will easily accrue our own environmentally friendly compost and soil!

5 bins (1)With 5 bins, and 3lbs of worms, Whittier College could be re-purposing 8lbs of otherwise wasted food, and turning it into nutrient-rich soil, a day. 


Here’s how it works…

If we are to implement 5 worm bins, each would be a 5-tray model or a DIY bin, and should start with about 3 pounds of worms- the bin will require more food as the population of worms grows (there should be 2 pounds of earthworms for each pound of food). The rate of consumption will be determined early on, and we will feed the worms just ahead of that amount. 1 pound of worms can eat 3.5 pounds of food waste per week- half a pound a day. If we were to buy 3 pounds of earthworms, costing us about $50, the 3 pounds of worms in each of the 5 bins could be eating 1.5 pounds of food a day. We would be turning close to 8 pounds of food into soil rather than throwing it away, a day. And 3 pounds of worms is a starting number, they will reproduce and their consumption rates will increase. Also, we can always have more than 5 bins. (An important note: the maintenance time is no more than 15 minutes a week!)


The worm bins and the composting that we hope to implement will give students the opportunity to think about waste- what they and others create, and how to dispose of it in a non-harmful and sustainable way. It is important that a connection between students and their waste is established and that they are educated on the small differences that can be made to bring about big change.