06/11/2026
Still thinking about this one from our Sonoma 1BC field day last week 🦠
Grayson Hartley has been building on Preston’s regenerative foundation since he arrived in 2018. In the video, he walks us through the compost tea brewer he’s set up at
Compost tea multiplies the beneficial bacteria, fungi, and other microorganisms already present in good compost, and delivers them across the vineyard at scale. A single 1000-litre brew from a small amount of high-quality compost can cover several hectares, applied as a foliar spray or direct to the vineyard floor. It’s a low-input way to keep building the soil food web.
Thanks Grayson for sharing this 🙏