The Green Room

A reader wrote:

Your compost tea is missing one KEY ingredient: oxygen.  In the anaerobic water environment it’s most likely you’ll create something that will kill your plants as that is the best way to create harmful bacteria, fungi, etc. The key to great compost tea is aeration. I use an aeration pump/filters used in fish tanks.

Lindsay responds:

The compost tea recipe we provided was definitely the anaerobic or non-aerated version. As you can imagine we have a wide audience out there, from those who have never gardened to master gardeners! Our intent was to provide the most basic and simple recipe, hence the "bucket-fermentation method" versus what some would consider the more complicated, ‘Bucket-blubbler method" or suggesting they purchase a commercial tea brewer.

From my reseach I found that the non-aerated version also has a function in the garden and compost tea can be as complex or as simple as you want to make it. Now that we’ve got people curious about compost tea, perhaps we’ll do another ‘level 2′ video, where we talk about aeration (like the a aquarium aerater), adding nitrogen via alfalfa pellets and adding sugar, like molasses.

Again, sources I found called this ‘Level 1" compost tea or the ‘bucket fermentation method". Stay tuned, as we hope to bring people along one small step at a time. I think your suggestion of highlighting the benefits of aeration when making compost tea are definitely worth exploring. In a future issue we can elaborate on Level 2, 3 and 4 types of tea which includes aerated teas.