Compost Tea
Compost tea rich in beneficial microbes to support soil fertility and root development. Use it in soil or growing media to strengthen the living biology around plant roots.
The liquid formula fits into regular watering, making consistent feeding easy for everyday plant care.
Why You'll Love It
- Soil Biology Rich in the beneficial microbes that make soil fertile.
- Strong Roots Supports root development at the same time as soil life.
- Easy to Use Use it in soil or growing media as part of normal watering.
Made by growers
More than a bottle on a shelf.
- Talk to real plant people. The team that mixes the formula answers your email.
- Made in-house, in the USA. Every bottle mixed and filled by us, not a third party.
- We're growers, not resellers. We use this on our own plants before it ships.
- Bundle savings only here. Pair any two TPS formulas — your order ships free.
Compost tea rich in beneficial microbes to support soil fertility and root development. Use it in soil or growing media to strengthen the living biology around plant roots.
How to Use Compost Tea
| Method | Amount | How Often |
|---|---|---|
| Watering can | 1-2 tsp per gallon of water, watered evenly over the garden | Apply once weekly, or with every watering, year-round |
| Hose end sprayer | Set dial to 2 tsp setting | Apply once weekly, or with every watering, year-round |
No brewing, steeping, or bubbling required — it's ready to mix and pour. Gentle enough to include in every watering, with no seasonal schedule to track.
What's Inside
Two ingredients: earthworm castings compost tea, and citric acid to stabilize pH in the bottle. Everything else is what the castings bring — worm castings are among the most biologically rich composts there are, and brewing extracts their soluble contents into liquid form: beneficial bacteria that colonize soil and improve nutrient cycling, and humates, the dark organic compounds that help roots absorb minerals and help soil hold both moisture and nutrients instead of letting them wash through.
What it isn't: an NPK fertilizer. Compost tea carries only the modest nutrients castings themselves contain — its job is making soil and roots work better, not delivering nitrogen by the percent. That's also why it's so forgiving: family- and pet-safe inputs, no burn risk at label rates, and no plant it's wrong for. Use it as the biological layer under your regular feeding, the way compost underlies a good garden.
Made For
Everything you water — vegetable gardens, raised beds, flowers, shrubs, trees, lawns, containers, and houseplants — especially gardens without room for a compost pile, new beds starting from bagged soil, and households that want a feed safe around kids and pets.
Problems It Solves
- No compost pile and no space or time to keep one
- Beds of bagged or builder-grade soil with no life in them
- Fertilizer that seems to wash through sandy soil without doing much
- Wanting one gentle input safe to use on everything, indoors and out
FAQs
How often should I use compost tea?
Mix 1-2 tsp per gallon of water and water your garden evenly — once weekly, or simply with every watering, all year round. A hose end sprayer set to the 2 tsp setting covers beds and lawns fast. There's no seasonal schedule to manage and no burn risk at label rates, so the easiest habit is just adding it to the can whenever you water.
Is this the same as brewing my own compost tea?
Same idea, minus the equipment and the 24-48 hour wait. Home brewing steeps castings or compost in aerated water to extract microbes and humates — this arrives with that work done and the pH stabilized, so it pours straight from the bottle. If you enjoy brewing, the two aren't exclusive: many gardeners keep bottled tea for regular waterings and brew batches for big spring applications.
Does compost tea replace fertilizer?
No — it complements it. Compost tea carries beneficial bacteria and humates, but only the light nutrient load castings naturally hold; a hungry tomato or a depleted bed still needs real NPK from fertilizer or compost. What the tea does is make that feeding count: better nutrient uptake at the roots and soil that holds nutrients instead of leaching them. Together they outperform either alone.
Is it safe around kids, pets, and on vegetables?
Yes — the inputs are family- and pet-safe: earthworm castings tea and citric acid, nothing else. Use it on edibles right through the season and wash harvested produce as you normally would. Standard sensible handling applies — it's made for feeding plants, not for drinking, so store it out of reach and rinse skin after splashes — but there's no re-entry wait for the yard.
Can I use it on houseplants and lawns too?
Yes to both, at the same 1-2 tsp per gallon. For houseplants, it's one of the few garden inputs gentle enough for every pot in the house — just water normally with the mix. For lawns, the hose end sprayer is the practical route: the bacteria and humates help thatch break down and improve how the turf uses whatever lawn feeding you already do.
When will I see results?
Gently and cumulatively — that's the nature of a biological input. Used with regular waterings, expect the indirect signs first over 3-6 weeks: soil that wets more evenly, plants responding better to their normal feeding, steadier color. The bigger payoff builds over a season as soil biology establishes. For a faster, more visible push, pair it with an NPK fertilizer — the tea makes the fertilizer work harder.
Related Products
Worm Castings Concentrate Compost Tea for Plants Compost Starter and Accelerator