The Flush growing cabinet glowing softly on an oak sideboard at dusk, golden oyster mushrooms fruiting inside

Gourmet mushrooms,
grown where you live.

A climate-controlled cabinet that grows gourmet mushrooms on your kitchen bench. No misting. No guesswork.

Join the waitlist See how it works
  • Kickstarter funded in 7 minutes
  • Designed & built in Australia
  • Next release: limited units

Why Flush exists

The best mushrooms never make it to the supermarket.

Lion’s mane, pink oyster, chestnut — the best varieties are too delicate to ship, and growing your own has meant misting schedules and a garage full of gear. Flush makes it simple: choose a variety, close the door, and let the climate do the work.

Two kids peering into the Flush cabinet, watching mushrooms grow

How it works

Set. Observe. Harvest.

Subscribe optional

Fresh fruiting blocks, delivered on your schedule. Choose your variety, set your frequency — when one block is spent, the next is on its way.

A fruiting block in its kraft box, ready to grow

Set

Place the block inside and select its variety on the touchscreen. No tools, no prep.

A hand sliding a kraft-boxed fruiting block into the Flush cabinet

Observe

Flush holds the perfect temperature, humidity and CO₂. Watch your mushrooms appear over the next few days — no misting, no monitoring.

A hand reaching into the warm glow of the Flush cabinet as mushrooms fruit

Harvest

Pick when the caps are fully formed. Each block gives two to three harvests before the next takes its place.

A generous plate of freshly harvested gourmet mushrooms

The climate

A rainforest climate, held steady.

Mushrooms fruit when the air is just right — cool, humid, always fresh. Flush recreates those conditions precisely, then holds them for as long as it takes.

Humidity
Kept in the sweet spot around the clock. No misting bottle, no dried-out blocks.
Temperature
Held steady through heatwaves and cold snaps alike, in any season.
Fresh air
CO₂ is exchanged continuously, so caps grow thick and meaty — never leggy.
Light
A soft, full-spectrum glow on a day–night cycle — mushrooms grow toward it, and it happens to look beautiful.
Presets
Every variety has its own program. Choose one, and Flush takes it from there.
A fingertip selecting a mushroom variety preset on the Flush touch panel
One tap per variety — Flush handles the weather

Flush, in motion

Set, forget — and watch your kitchen come alive.

What you can grow

Choose your flush.

9+ gourmet varieties at any time, rotating with the seasons — many you’ll never find in a store.

Lion's Mane mushrooms growing from a kraft substrate block

Lion's Mane

Hericium erinaceus

Delicate seafood flavour; prized for focus and memory.

King Oyster mushrooms growing from a kraft substrate block

King Oyster

Pleurotus eryngii

Thick meaty stems made for searing like scallops.

Black Pearl King Oyster mushrooms growing from a kraft substrate block

Black Pearl King Oyster

Pleurotus ostreatus × eryngii

A chef’s favourite: dark caps and deep umami.

Pink Oyster mushrooms growing from a kraft substrate block

Pink Oyster

Pleurotus djamor

Ruffled coral petals with a smoky bacon-ish edge.

Gold Oyster mushrooms growing from a kraft substrate block

Gold Oyster

Pleurotus citrinopileatus

Bright and nutty — almost too pretty to cook.

Blue Oyster mushrooms growing from a kraft substrate block

Blue Oyster

Pleurotus ostreatus var. columbinus

Slate-blue caps with rich savoury depth; loves a cool room.

Snow White Oyster mushrooms growing from a kraft substrate block

Snow White Oyster

Pleurotus ostreatus

Crisp, clean and quick — the easiest first grow there is.

Shiitake mushrooms growing from a kraft substrate block

Shiitake

Lentinula edodes

The classic — smoky, meaty, endlessly useful.

Maitake mushrooms growing from a kraft substrate block

Maitake

Grifola frondosa

Hen of the woods: feathery fronds, extraordinary roasted.

Golden Enoki mushrooms growing from a kraft substrate block

Golden Enoki

Flammulina velutipes

Wild-form enoki — amber bouquets with a gentle crunch.

Chestnut mushrooms growing from a kraft substrate block

Chestnut

Pholiota adiposa

Glossy amber clusters with a crisp nutty bite.

Pioppino mushrooms growing from a kraft substrate block

Pioppino

Cyclocybe aegerita

Velvet caps on firm stems, with a peppery, earthy finish.

Beech mushrooms growing from a kraft substrate block

Beech

Hypsizygus tessellatus

Buna shimeji — nutty little clusters that keep their crunch.

Silver Shimeji mushrooms growing from a kraft substrate block

Silver Shimeji

Hypsizygus tessellatus

Small, elegant and savoury; built for butter and soy.

Blue Shimeji mushrooms growing from a kraft substrate block

Blue Shimeji

Hypsizygus tessellatus

Marbled blue-grey caps with a sweet, shellfish-like bite.

Phoenix Oyster mushrooms growing from a kraft substrate block

Phoenix Oyster

Pleurotus pulmonarius

A graceful summer oyster, soft with an almond sweetness.

Warm White Oyster mushrooms growing from a kraft substrate block

Warm White Oyster

Pleurotus ostreatus

Cream-capped and mellow; turns to velvet in the pan.

Coral Tooth mushrooms growing from a kraft substrate block

Coral Tooth

Hericium coralloides

Lion’s mane’s wilder cousin — cascading icicles, crab-sweet.

Reishi mushrooms growing from a kraft substrate block

Reishi

Ganoderma lucidum

The lacquered wellness classic, grown for tea and tincture.

Turkey Tail mushrooms growing from a kraft substrate block

Turkey Tail

Trametes versicolor

Banded and beautiful — this one you brew, not sauté.

Blocks arrive ready to grow. Subscribe for a steady rhythm, or buy one at a time.

The cabinet

Have a look around.

  • Full-view glass door

    Watch every stage without lifting a finger — the growing is the show.

  • Touch presets, per variety

    Pick what you’re growing; Flush dials in its ideal conditions.

  • Room for two blocks

    Run two varieties side by side, or stagger them for a rolling harvest.

  • Quiet, continuous airflow

    Fresh air in, CO₂ out — about as loud as a gentle exhale.

Drag to spin

640 × 370 × 220 mm — a bench-top footprint

At home

Compact enough for the bench. Refined enough to leave out.

Designed to be seen — a calm black frame, a soft glow, and something new every time you walk past.

A woman checking on the Flush cabinet in a calm, minimal kitchen
A family sharing dinner made with home-grown mushrooms
Kids delighted with a box of freshly harvested mushrooms
The Flush cabinet at home on a kitchen bench

Early growers

As expert mushroom growers, we’ve seen a lot of home growing setups and Flush has set a new standard. It’s a seriously impressive unit and a game-changer for home mushroom growing.
Amy & Mickey
Little Acre Gourmet Mushrooms
“We kept waiting for something to go wrong, but it just worked. Super simple and actually really fun.”
Michael & Jas
First-time growers
“Its elegant design looks great in your kitchen and is designed to be user-friendly and produce masses of mushrooms.”
Mark Udovitch
@plantbasedmale

Built for the long run

Harvest, rest, repeat.

Most blocks fruit two or three times, and with a subscription the next one arrives as the last retires. Fresh gourmet mushrooms, all year round.

Questions

Asked, answered.

What does Flush actually do?

Flush is an automated fruiting chamber. It manages the things mushrooms are fussy about — humidity, temperature and fresh air exchange — so you don’t have to. It creates the ideal environment for mushrooms to develop and fruit, reliably.

How many mushrooms can I grow?

The cabinet fits one to two standard fruiting blocks at a time, and under good conditions you’ll get several flushes from each — up to around 1 kg per week with two blocks on the go.

Do I need any experience?

None. Presets are provided for every variety — choose what you’re growing and Flush maintains the right conditions. Beginners get an easy first grow; experienced cultivators get a precise, controlled chamber.

Is it safe to run indoors?

Yes. Growing mushrooms produces CO₂ in quantities comparable to other household sources, and Flush continuously exchanges fresh air to prevent any build-up. Spores from edible varieties are generally considered safe for healthy adults — if you have respiratory sensitivities, check with a health professional first.

How much power does it use?

On average, about as much as a small fan and humidifier running together. Actual use depends on your room temperature and the variety’s requirements.

How big is it?

Externally about 640 mm wide, 370 mm high and 220 mm deep — a bench-top footprint. Inside there’s roughly 465 × 310 × 190 mm of growing space, enough for two standard blocks.

The next release

Grow something extraordinary.

The Kickstarter batch funded in seven minutes. The next limited release is coming — join the waitlist with 2,500+ early growers for first access.

We’ll never sell or misuse your details.

Curious how it started? See the Kickstarter campaign

The Flush cabinet glowing at dusk, mushrooms thriving inside