Aerated Compost Tea: The Probiotic Elixir for Living Soil and Healthy Plants

Compost is gold. Aerated compost tea (ACT) is liquid gold—concentrated, immediately available, and teeming with beneficial biology.

How It Works

Properly brewed ACT introduces diverse microbes—bacteria, fungi, protozoa, nematodes—that:

• Outcompete pathogens for nutrients and space
• Consume pests directly
• Produce antibiotics
• Physically displace harmful organisms

The Oxygen Key

Anaerobic (low-oxygen) conditions favor pathogens. Aerobic brewing selects for beneficials. Well-oxygenated tea eliminates ~75% of bad actors automatically. Chemical fertilizers and pesticides destroy this microbiome; ACT rebuilds it.

Plant-Microbe Partnership

Plants exude ~50% of their photosynthate into the rhizosphere—feeding microbes that, in return, cycle nutrients, suppress disease, and enhance flavor. ACT jump-starts this cycle.

Science Backs It

The USDA National Organic Standards Board convened a Compost Tea Task Force (2003–2004) acknowledging ACT’s role in fertility, pest, and disease management—transferring microbial biomass and soluble nutrients into a foliar/soil-applicable form impossible with solid compost alone.

Brew your own with a quality brewer, or buy from a trusted source. Either way, ACT is the yogurt your soil craves.