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Composting & soil

Feed the soil, and the soil feeds the plants

Almost every garden problem traces back to the dirt. Get the soil alive and everything above it gets easier — fewer pests, less watering, more food. Composting is how you get there, and it's far simpler than it looks.

Balance your compost pile

Add buckets of what you’ve got and watch the mix. Aim for the green “just right” band — about two to three parts browns to one part greens.

Greens nitrogen — scraps, grass, coffee
2
Browns carbon — leaves, straw, cardboard
5
all greens2–3 : 1 sweet spotall browns

A “bucket” is just a unit — a shovelful, a bin, a wheelbarrow — as long as you measure greens and browns the same way. Keep it as damp as a wrung-out sponge and turn it now and then for air. Smells sour? Add browns and turn.

Cross-section of a compost bin with layers of greens and browns breaking down into finished compost

The one idea that changes everything

Conventional gardening feeds the plant — a scoop of synthetic fertilizer, quick green growth, repeat. Living-soil gardening feeds the soil: the fungi, bacteria, and earthworms that turn organic matter into exactly the nutrients plants can absorb, on demand. Compost is the fuel for that underground workforce. Build the soil once and it keeps paying you back, season after season.

Browns and greens: the whole recipe

A compost pile is just a controlled version of what happens on a forest floor. You only need to balance two things:

Greens (nitrogen)Browns (carbon)
Vegetable scraps, coffee grounds, fresh grass clippings, plant trimmings, manure from herbivores.Dry leaves, straw, cardboard, shredded paper, wood chips, sawdust.

Aim for roughly two to three parts browns to one part greens by volume. Too many greens and it goes slimy and smells like ammonia; too many browns and it just sits there. If your pile ever smells bad, add browns and turn it — that fixes almost everything.

Hot pile or cold pile?

MethodHow it worksBest for
Cold (slow)Pile it up, add as you go, turn occasionally. Ready in 6–12 months.Anyone who wants zero fuss. Nature does the work.
Hot (fast)Build a full cubic-yard pile at once, keep it moist, turn weekly. Hits 130–160°F and finishes in 4–8 weeks.Gardeners in a hurry — the heat also kills weed seeds and pathogens.

Moisture should feel like a wrung-out sponge, and air matters as much as water — turning the pile is really just giving the microbes oxygen. Both methods make excellent compost; hot is faster and cleaner, cold is easier.

What to compost — and what to keep out

🟢 Add freely 🟡 In moderation 🔴 Keep out
CategoryExamples
🟢 Add freelyFruit & veg scraps, coffee grounds and filters, eggshells, dry leaves, straw, plain cardboard, grass clippings (unsprayed).
🟡 In moderationBread and grains (can attract pests), citrus and onion (slow to break down), weeds without seed heads, wood ash (raises pH).
🔴 Keep outMeat, fish, dairy, and grease (pests and odor); pet waste from dogs/cats; diseased plants; anything sprayed with herbicide; glossy or coated paper.

Beyond the pile: compost tea and worm castings

Finished compost is the foundation, but two spin-offs are worth knowing — and they're the organic feeds the app's Fertilize Reminder points you toward:

The no-till mindset

Every time you rototill, you shred the fungal networks and worm channels that took a season to build — and you drag up a fresh crop of weed seeds. The living-soil approach is to stop digging: layer compost and mulch on top, let the soil life pull it down, and disturb the ground only where you actually plant. Less work, less watering, and healthier soil every year instead of poorer.

Bottom line: you don't need a fancy tumbler or a perfect ratio. Pile up browns and greens, keep it damp, turn it when you think of it, and keep meat and pet waste out. In a few months you'll have the best fertilizer money can't buy — and a garden that gets easier every season.
The Moon Phase Garden app ties this together: its Fertilize Reminder suggests compost, compost tea, and worm castings on a per-plant schedule — and never tells you to feed a nitrogen-fixing bean.