Advice for the Home Gardener from the Help Desk of the
UC Master Gardener Program of Contra Costa County
Thank you for contacting the UC Master Gardener Program Help Desk. It was nice to speak with you this morning. You asked about when to spread compost on your garden--whether you should do it now or wait until spring. There is no wrong time to put compost into the garden, but the microbes that decompose the compost and make nutrients available work much slower in the winter. As soon as the soil warms up, the microbes work faster. If you choose to wait until spring, make sure you apply it at least a couple of weeks before you plant.
Here's a link to information about rapid composting you might find interesting: https://vric.ucdavis.edu/pdf/compost_rapidcompost.pdf.
And more information about using compost in the home garden can be found at:
Please don't hesitate to contact us again with further gardening questions.
Help Desk of the UC Master Gardener Program of Contra Costa County (SEH)
Note: UC Master Gardeners Program of Contra Costa's Help Desk is available almost year-round to answer your gardening questions. Except for a few holidays (e.g., last 2 weeks December), we're open every week, Monday through Thursday for walk-ins from 9:00 am to Noon at 2380 Bisso Lane, Concord, CA 94520. We can also be reached via telephone: (925) 608-6683, email: email@example.com, or on the web at http://ccmg.ucanr.edu/Ask_Us/. MGCC Blogs can be found at http://ccmg.ignore.edu/HortCoCo/ You can also subscribe to the Blog.
- Author: Shannon Wolfe
I started composting at my house a couple years ago. I had been eyeing an unused compost bin that my in-laws had in their back yard for a while, and when they finally offered it up to me, I was happy to take the bin off their hands and put it to use in my yard. Back when I lived in San Francisco I was always on top of what could go in the green waste bin, and what had to be put in the trash, and the same went for when we moved to Berkeley and when we moved to Walnut Creek. I love not putting things in the trash. Our recycling bin is usually the fullest bin on trash days. Since we have started composting some things still go in the city's green waste cart, but more and more goes into my personal compost bin. There was a bit of a learning curve at first, but now it is second nature to me (and its getting easier for my husband, too).
There are many reasons to compost: adding compost to your soil improves your soil's texture, fertility and ability to retain water. Compost adds microorganisms and other beneficial critters to your soil (I am always excited to see bugs and earthworms, and the occasional lizard hanging out in my bin). And when you add kitchen scraps to your compost bin you are keeping them out of the landfill - you are doing the ultimate form of recycling! I think composting can be intimidating to some people, but I am here to tell you that composting is not hard!
The compost bin I use is a Bio-Stack bin. Like I said earlier, I got it for free, so I am in no way advocating for this particular brand of bin, but I do enjoy it. It is light-weight and easy to make bigger or smaller as needed by adding or removing a layer. It also has a nice hinged lid that makes it easy to add new material to the pile. The lid comes off easily for watering and turning the compost. But if I did not have this bin, my plan was to just start a pile in the corner of my yard and compost the old-fashioned way. There is no need to buy anything to get a compost pile going!
I would say the one biggest hurdle to composting at my house was deciding, and learning along the way, what I wanted to have go in my compost pile, and what was still best to send off in the city's green bin. Our trash set up had always included a trash can, a recycling bin and a green-waste can, so I just added a fourth container: the compost container. If you are already in the habit of putting food waste (and other things like coffee filters and paper towels) in a green waste bin, then adding another bin for compost materials is not that hard. Our compost bin is one of these stainless steel buckets with a lid and handle:
It works really well for us. It gets full maybe once or twice a week, depending on what we are cooking. When it gets full I walk it out to the compost bin and dump it. If its super funky inside, I fill it up with the hose, swish it around a bit and then dump that water into the compost bin too. Since I am already out at the compost bin I will usually take my garden fork, which I keep by the compost bin and turn the pile.
There are certain food waste items that I could put in my compost pile that I choose to put in the city's green waste bin. If for some reason we are using a lot of paper towels, I put most of those in the city bin. I have also learned that avocado pits, stone fruit pits, corn cobs and corn husks take a really long time to break down, so I no longer put them in my compost pile. But you can easily learn what works for you. Some weeks it feels like most of what is going in the compost pile is egg shells and coffee grounds, but so far the compost police have not showed up and punished me for any lack of diversity in my pile.
Another admission on my part, I don't water my compost pile as often as I should. But the pile continues to break down, just at a slower pace. From my experience, I don't think you can really compost "wrong." There are certainly best practices to use, and ways to make your food waste break down faster, but I think some people get too caught up in balancing the greens and browns, and watering and turning the pile that they never start one in the first place! If you have a compost bin that does develop an issue - like flies, or a nasty smell, there is pretty much always an easy solution.
I know that my summer crop of tomatoes and beans benefited greatly from the home made compost that I added when I potted them, and I encourage you to give home composting a shot, too!
If you do want some more basic information on composting, here are some great links to get you going: