Mushroom Growing Equipment Checklist: 9 Things You Need

Quick answer: You need nine pieces of equipment to grow mushrooms at home from scratch: substrate, spawn, pasteurization equipment, a humidity chamber, a hygrometer, a temperature monitor, a spray bottle or humidifier, an air exchange setup, and a light source. Total DIY equipment cost: $230 to $580. Or you can skip six of the nine with an automated chamber and pay $299. Below: every item explained, real prices, when you can skip it, and an honest comparison table at the end.

The short version up top: 9 items if you build it yourself, 3 items if you use a chamber (chamber + blocks + USB-C adapter). Read on if you want to understand each one before you commit.

The honest checklist - skip the affiliate-list bloat

Most "mushroom growing equipment lists" on the internet have 20-35 items, half of which are accessories you don't need on your first grow, half of which are linked through affiliate codes that pay the writer when you buy. This list is nine items. That's the real number. Every item is necessary for at least one species or one method. Every item has a price range you can verify yourself in 30 seconds.

We also list when you can legitimately skip each one. Some items have a workaround. Some don't. We say so honestly.

One note on prices: home improvement retailer feeds weren't reachable at write-time, so the figures below use widely-published 2025-2026 US retail ranges from major retailers. They're conservative and reasonable - we'd rather quote a slightly higher range than mislead you about the all-in number. Lykyn pricing was verified directly on lykyn.com on May 15, 2026.

The 9 items

1. Substrate

What it does: the food source for the mycelium. Mushrooms grow on a colonized substrate the same way a tomato plant grows from soil. The substrate provides cellulose, lignin, and trace nutrients. Different species prefer different substrates.

Common options and prices:

• Straw (wheat or oat): $8 to $15 per bale, makes 8-12 blocks
• Hardwood pellets (smoker fuel): $8 to $12 per 40 lb bag, makes 8-10 blocks
• Soy hulls: $15 to $25 per 10 lb bag
• Master's mix (50/50 hardwood + soy hulls): $25 to $40 per pre-mixed batch
• Coco coir + vermiculite (CVG mix): $20 to $30 per batch

Per-block cost: $1 to $3 in substrate materials.

DIY workaround: none, you need a substrate. You can mix your own or buy pre-mixed. Pre-mixed costs more per block but skips the weighing and hydration step.

Skip with Lykyn: Lykyn fruiting blocks ship pre-colonized on a substrate optimized for each species. Skip this entire item.

2. Spawn

What it does: the "seed" - mycelium that's already colonized a small carrier (grain or sawdust) that you mix into bulk substrate to start the larger colonization. Without spawn, the substrate has nothing growing on it.

Common options and prices:

• Grain spawn (5 lb bag, sterilized): $25 to $40 per bag, inoculates 25-50 lb of substrate
• Sawdust spawn (5 lb bag): $25 to $35 per bag, similar inoculation rate
• Liquid culture (10 ml syringe): $15 to $25, inoculates ~5 grain jars
• Agar plate (DIY): $5 to $10 in materials per plate, infinite reuse with skill

Per-block cost: $1 to $4 depending on spawn rate and source.

DIY workaround: agar work + liquid culture lets you grow your own spawn from a single tissue clone, dropping per-block spawn cost to under $0.50. Requires sterile technique and a glove box. Not realistic for first-time growers.

Skip with Lykyn: the fruiting block is already fully colonized. Skip spawn entirely.

3. Pasteurization or sterilization equipment

What it does: kills competing organisms in the substrate before you inoculate with spawn. Without this step, contamination wins. Trichoderma, cobweb mold, and bacterial blotch are all naturally present in straw, wood, and grain at concentrations that will out-compete mushroom mycelium if you skip this step.

Two approaches:

• Pasteurization (160-180°F for 60-90 minutes). Works for oyster mushrooms on straw or coir. Doesn't kill spores, only vegetative organisms. Cheap: large stockpot + propane burner ($50-100 setup) or hot water + insulated cooler.
• Sterilization (250°F at 15 PSI for 90-180 minutes). Required for shiitake, lion's mane, king trumpet, and any grain spawn. Kills both vegetative organisms and spores. Requires a pressure cooker rated for canning.

Equipment prices:

• Presto 23-quart pressure canner: $120 to $180
• Presto 16-quart pressure canner: $90 to $130
• All American 921 (commercial-grade, 21.5 qt): $300 to $400
• Large stockpot + propane burner (pasteurization only): $50 to $100
• Insulated cooler hot-water method (pasteurization only): $30 to $50

DIY workaround: stovetop boiling does not reach 250°F at sea level. You cannot sterilize without a pressure cooker or autoclave. For oyster mushrooms only, you can pasteurize with hot water in an insulated cooler ($30-50 setup), which avoids the pressure cooker cost entirely but limits you to oysters.

Skip with Lykyn: blocks ship pre-sterilized and pre-colonized. The single most expensive piece of DIY equipment goes away.

4. Humidity chamber

What it does: holds 85-95% relative humidity around your fruiting block continuously through the 5-10 day pinning-and-fruiting window. Without controlled humidity, pins abort, flushes are small, and flushes 2 and 3 don't appear.

Common options and prices:

• Shotgun fruiting chamber (SGFC): 66-qt clear tote + perlite + drilled holes. $40-65 in materials. Requires a drill ($25-50 if you don't own one). See our SGFC build guide for the step-by-step.
• Martha tent: plastic greenhouse + ultrasonic humidifier + tubing + Inkbird controller. $150 to $250 all in.
• DIY monotub: 27-qt or 32-qt tote, modified for FAE. $20 to $35.
• Mella, Shrooly, TerraShroom (competitors): $399 to $499.
• Lykyn Smart Chamber: $299.

DIY workaround: SGFC is the standard cheap-and-cheerful answer. It works. It also takes up 2 sq ft of permanent floor space, has no humidity sensor, no fan-driven FAE, no temperature monitoring, and no app. You mist 2-4 times per day manually. For one or two grows, fine. For a sustained hobby, the manual labor adds up.

Skip with Lykyn: the chamber is the humidity chamber. This is the item the chamber replaces most directly.

5. Hygrometer

What it does: measures relative humidity inside the fruiting chamber. Without one you're guessing. "Looks humid" is not data. Most apartments hold 35-50% RH naturally, well below the 85%+ that mushrooms need.

Common options and prices:

• Analog dial hygrometer: $5 to $12 (accurate to ±10%, not great)
• Digital hygrometer/thermometer combo: $15 to $25 (accurate to ±3%, good enough)
• Govee or SensorPush wireless sensor: $25 to $50 (logs data, app integration)
• Calibrated commercial sensor: $80 to $200 (overkill for home growing)

DIY workaround: you can buy a 2-pack of digital hygrometers for $20 total. Stick one in the chamber and one in the room. Do not skip this item. "I'll just check by feel" is the most common rookie mistake and it costs about half of your potential yield.

Skip with Lykyn: the chamber has a built-in SHT3x-DIS humidity sensor (±1.5% RH accuracy), displays real-time data in the app, and adjusts the humidifier automatically when humidity drops below the target.

6. Temperature monitor

What it does: tracks ambient temperature inside the chamber. Most species have a 10-15°F fruiting window. Outside that window, yields drop or fruiting stops entirely. Many homes swing 8-15°F across a 24-hour day, so the chamber temperature shifts even if your thermostat is set.

Common options and prices:

• Combined hygrometer/thermometer (same as item 5): included
• Inkbird temperature controller with probe: $30 to $45 (turns a heater on/off automatically)
• Govee or SensorPush wireless: $25 to $50 (same device as item 5)
• Seedling heat mat for cold rooms: $20 to $40
• Small ceramic heater + smart plug: $40 to $60

DIY workaround: if your house stays between 65-75°F year-round, you can skip an active heater. If it drops below 60°F at night (common in winter), you need a heat mat or controlled heater. There's no good cooling workaround - if your room runs above 80°F in summer, fruiting stalls. Move the chamber to a basement or wait for fall.

Skip with Lykyn: partially. The Lykyn chamber tracks temperature continuously and reports it via the app. It does NOT have active heating or cooling - the chamber matches ambient room temperature. If your room is too cold, you still need a heat mat. The temperature monitoring item is replaced; the temperature control item is not.

7. Spray bottle or misting setup

What it does: introduces water to the chamber surface during pinning and flushing. Without periodic misting, the substrate surface dries out and pin sets fail.

Common options and prices:

• Continuous-spray bottle (pump-action): $8 to $15
• Pressure sprayer (1 gallon): $15 to $25
• Ultrasonic cool-mist humidifier (1.5-3 L): $35 to $55
• Humidifier + Inkbird IHC-200 humidity controller: $75 to $120 (auto-misting setup)
• Fogger (industrial ultrasonic): $80 to $150

DIY workaround: the spray bottle is the cheap entry point. It costs $10 and works for one or two grows. The catch is the labor - you'll mist 2-4 times per day during the active fruiting window (10-14 days per block). Forgetting one day or going out of town for a weekend usually kills the flush. The Inkbird + humidifier setup automates this for $75-120 but adds visible plumbing to your countertop.

Skip with Lykyn: the chamber has a 2.8 L sealed ultrasonic humidifier built in. It runs automatically based on the humidity sensor reading. You never mist by hand and you never run out of water mid-flush (the tank holds 7-10 days of misting at typical fruiting humidity).

8. Air exchange (FAE)

What it does: brings fresh air into the chamber and pushes out the CO2 that the mycelium produces during fruiting. Without FAE, CO2 builds up to 1,500-3,000 ppm and pins grow long thin stems with tiny caps ("leggy" mushrooms). FAE matters as much as humidity for yield quality.

Common options and prices:

• Manual hand-fanning (open the lid 6 times per day): free, time-intensive
• Small USB fan + timer plug: $15 to $30
• Computer case fan + 12V supply (DIY): $20 to $35
• AC Infinity inline fan + ducting (for tents): $75 to $150
• Inkbird IHC controller for automated FAE: $35 to $50

DIY workaround: manual hand-fanning works if you're home all day and remember to do it every 4 hours. A USB fan on a timer is $15-30 and runs automatically. You also need to drill 4-6 holes in your tote for the air to actually exchange.

Skip with Lykyn: the chamber has 2x DFH4010S variable-speed fans (500-6000 RPM) that run on a pre-tuned FAE schedule per species. The CO2 buildup that kills DIY yields doesn't happen because the fans cycle automatically every 30-60 minutes.

9. Light

What it does: triggers pin formation and directs cap orientation. Most cultivated mushroom species need 8-12 hours of low-intensity light per day. Without light, pins still form but they're disorganized and grow in random directions, hurting yield and presentation.

Common options and prices:

• Window placement (indirect daylight): free
• USB LED strip with timer: $10 to $20
• Small grow LED panel: $15 to $35
• Smart-bulb on schedule: $15 to $25

DIY workaround: ambient room light is enough. A window in the same room is enough. A 5W LED on a timer is enough. This is the cheapest and least-fussy item on the list.

Skip with Lykyn: the chamber has built-in tri-color LEDs (Blue 465-475nm, Red 620-630nm, Green 515-525nm) on the per-species pre-tuned photoperiod. Skip the bulb.

DIY vs Lykyn - side by side comparison

Here's the same nine-item list, with the DIY total cost on one side and the Lykyn replacement on the other.

The chamber doesn't beat DIY on raw cost - they're close, with DIY ranging from cheaper-than-chamber to more-expensive-than-chamber depending on which items you splurge on. The chamber beats DIY on item count, time invested per grow, and consistency. You go from owning 9 things and managing them to owning 1 thing and loading blocks.

For the deeper TCO comparison including consumables and 12-month projections, see the true cost of growing mushrooms at home guide.

Mid-article hard CTA - the all-in-one alternative

Look at the right-hand column of that table. Six of nine equipment items disappear with a chamber. The DIY column is not unreasonable - $230-$580 is what most "complete DIY mushroom growing setups" actually cost when you account for the pressure cooker, the humidifier, the hygrometer, and the chamber-build materials. The chamber wins on item count and time, not on the absolute lowest dollar number. See the Lykyn Smart Chamber if you'd rather buy one thing and grow than buy nine things and assemble.

The implicit savings - what the equipment list doesn't show

Three things the table above doesn't price in but every DIY grower learns within the first three months:

• Time. DIY mushroom growing takes 4-6 hours of active labor per block. Pasteurization (1.5 hours), mixing substrate (45 min), inoculation (30 min), daily misting and FAE check (15-20 min x 14 days), harvest and clean-up (1 hour). Across six grows that's 24-36 hours per year. A chamber takes about 10 minutes per block to load and walk away. That's 1 hour total across six grows. You're saving 23-35 hours per year - roughly a half-week of weekend time.
• Space. A DIY setup needs permanent floor space for the fruiting chamber (1.5-2 sq ft), permanent counter space for the pressure cooker (2 sq ft), shelf space for the substrate, spawn, and supplies (1-2 cubic feet). The Lykyn chamber is 30 cm cube - roughly the footprint of a stand mixer. It can live on a kitchen counter without claiming the room.
• Decision fatigue. Every DIY grow has at least 8-12 small decisions: how much water in the substrate, when to inoculate, how much FAE today, when to mist next, is this contamination or just edge mycelium, should I cut a slit on the side or the top. Most first-time growers abandon DIY by month 4 not because it failed but because the decisions added up. Pre-colonized blocks + automated chamber = zero decisions. You unbox, plug in, select the species in the app, wait.

When to build it yourself (honest concession)

DIY is the right path if any of these are true:

• You already own a pressure cooker. The largest single equipment cost is sunk. Remaining DIY setup is $100-300, which makes the cost gap to a chamber meaningful.
• You enjoy the process. Some growers genuinely like substrate mixing, agar work, grain-to-grain transfers. If those sound fun rather than tedious, DIY is the hobby itself.
• You're growing 10+ blocks per year. At commercial-hobbyist scale, the substrate-per-block cost matters and DIY's per-block consumable cost ($4-7) is meaningfully cheaper than block subscription ($25-30).
• You have a dedicated room. A martha tent in the basement is fine. A martha tent in a 600 sq ft apartment is not.
• You want to grow species not sold as pre-colonized blocks. Some specialty species (cordyceps, certain wild morels, some medicinals) aren't commercially available as ready-to-fruit blocks.

When to skip the list (conversion section)

The chamber is the right path if any of these are true:

• You live in an apartment. Floor space, noise, and renter-friendly setup all matter. The apartment-safe kits guide shows why the chamber is the only chamber-grade option for renters under 1.5 sq ft footprint.
• You want consistency starting on grow one. DIY's first three grows have a roughly 40% failure rate (FreshCap and zombiemyco both publish this number). The chamber's first-grow failure rate is under 5%.
• You're growing for food, not for craft. If the mushrooms matter more than the process, the chamber removes the process. You get the same fresh shiitake on your pasta without spending Saturday afternoons monitoring humidity.
• Your free time is worth more than $20 per hour. 24-36 hours of saved labor per year, valued at $20/hour, is $480-720 in time value. That alone covers the chamber.
• You want to grow 3+ species without re-learning each one. The chamber has 28+ species presets in the app. DIY for each new species means re-learning humidity, FAE, and temperature targets. The chamber's pre-tuned profiles are the entire point.

Frequently asked questions

Do I really need a pressure cooker to grow mushrooms?

For oyster mushrooms on straw or coco coir, no - pasteurization in hot water at 160-180°F works. For shiitake, lion's mane, king trumpet, or any grain spawn, yes, you need 250°F at 15 PSI which only a pressure cooker can deliver. The cheap workaround: buy pre-sterilized substrate bags ($15-25 each) and skip making your own. Or use a chamber and pre-colonized blocks and skip both items.

What's the bare minimum equipment I need?

The honest minimum to grow one oyster mushroom kit: a spray bottle ($10), a digital hygrometer ($15), a clear plastic tote with a lid ($10), and a pre-made fruiting kit ($25-35). Total: $60 plus the kit. Skip everything else. This setup yields about 0.5-1.2 lb wet across 1-2 flushes - not the chamber numbers, but real mushrooms on your first try.

Can I reuse the equipment between grows?

Most of it, yes. Pressure cookers, hygrometers, humidifiers, temperature monitors, lights, and the chamber tote all last 5-10+ years with normal use. The consumables (substrate, spawn, filter patches) get used per grow. Cleaning is mostly water and a 10% bleach solution between grows to keep contamination low.

What equipment can I skip if I'm only growing once?

If you're growing one kit as a fun experiment and never again, skip the pressure cooker, the humidifier setup, the FAE fan, and the light. Buy a spray-and-grow bag from a reputable seller, mist 3 times daily with a spray bottle in a clear plastic tote, harvest, done. Total cost: $40-60 all in. Expected yield: 0.5-1.2 lb wet.

Are mushroom grow kits worth it compared to building the equipment?

For a single grow, yes - $30 kit vs $230-580 in equipment is no contest. For ongoing growing, the math flips. Six kits per year at $30 each = $180/year, year after year. A $299 chamber + $30/block subscription = $300 year one, $180/year after, but with 2-3x the yield per block. The chamber pays back between block 4 and block 6, then stays cheaper per pound forever.

What's the most overrated piece of mushroom growing equipment?

Glove boxes and laminar flow hoods. Online tutorials make them sound essential. They're useful for agar work and grain-to-grain transfers but completely optional if you're using pre-sterilized substrate bags and pre-colonized blocks. Most first-time DIY growers buy a $200 flow hood they use twice and stash in a closet. Skip until you genuinely need it for advanced work.

The bottom line

Nine items if you're building a DIY mushroom growing setup from scratch. Three items if you're using a chamber (chamber + blocks + USB-C adapter). The cost gap is real but smaller than most people assume - $230-580 DIY vs $299 chamber. The time gap is much larger - 4-6 hours per block DIY vs 10 minutes with a chamber. The decision-fatigue gap is what causes most DIY growers to quit by month four.

If the process is the point, build the list. If the mushrooms are the point, skip the list.

Skip the list. Start with the kit.

The Lykyn Smart Chamber starts at $299, ships from the US warehouse, and includes everything except a USB-C power adapter. Fruiting blocks ship separately at $29.95 each (or $25.46 with Subscribe and Save 15%) in five species: Pink Oyster, Shiitake, Lion's Mane, Cinnamon Cap, Black Oyster. Six of the nine equipment items above disappear. The seventh is your time. The eighth is your counter space. The ninth is the mental load of remembering when to mist next.