From the San Jose beds
Worm Castings
Finished worm castings — the dark, crumbly compost worms leave behind. A slow, steady soil amendment you can't overdo.
In your bag right now: Batch B-2026-07-A, tested by Logan Labs. See the report →
What it is
The end product of red wigglers digesting food scraps and bedding — a fine, dark, soil-like material for amending beds and potting mixes. Grown, screened, and bagged in San Jose; every batch goes to an independent lab before it goes in a bag.
How to use it
Work into the top few inches of soil, or blend into potting mix. It won't burn plants — there's no wrong dose, just diminishing returns.
How much
Raised beds: about 1 gallon per 4×8 bed each season. Containers: mix 10–20% into your potting soil. Lawns: 1 cubic foot top-dresses roughly 400 square feet.
Never run out, never stockpile
Plans are sized slightly under what you'd use, so refills land before you run out and nothing piles up. Pause or cancel anytime.
For active beds and containers through the season.
A seasonal amendment for the whole garden, four times a year.
Seed packets — $4 add-on. A few varieties we like, tossed in with your castings order.