How soon will mushrooms appear?

Blue Oyster spawn that is already colonized usually pins within one to two weeks of opening and setting up. Caps mature a few days after pinning, so the first harvest comes fast.

Do I need a grow light or humidifier?

No grow light is needed; 12 hours of indirect light daily is enough. A humidifier helps in dry rooms, but daily misting with the included pump mister covers most homes.

How many harvests can I get?

Expect a few flushes from the 5-pound bag before it tires out. Blue Oyster is a vigorous fruiter, but the bag is sized for a small home grow, not a continuous supply.

Is it suitable for a total beginner?

Yes. The spawn is pre-colonized, the temperature range is wide, and the kit includes the mister. The main skill is keeping up with misting and airflow.

One 5-pound Blue Oyster spawn bag and one 8-ounce ultra-fine pump mister. You supply the light, airflow and a spot at 60-82°F.

How does it compare with growing from grain spawn?

It skips the colonization stage, so you fruit sooner and risk less contamination. Growing from scratch gives more control and volume but takes longer and needs more equipment.

Midwest Grow Kits Blue Oyster Mushroom Grow Kit

Best price now

$39.00at TrimleafChecked 1 h ago

Prices are checked against each store and labelled with when.

Visit Trimleaf

Midwest Grow Kits Blue Oyster Mushroom Grow Kit

Best price now

$39.00at TrimleafChecked 1 h ago

Prices are checked against each store and labelled with when.

Visit Trimleaf

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Lowest price today: $39.00 at Trimleaf (checked Nov 10, 2026).

Our take on the Midwest Grow Kits Blue Oyster Mushroom Grow Kit

This is a beginner-friendly indoor mushroom kit built around a 5-pound bag of fully colonized Blue Oyster spawn, plus an ultra-fine pump mister for daily misting. Blue Oysters are one of the fastest and most forgiving species to fruit at home, tolerating a wide 60-82°F range, so the kit suits first-timers who want a quick harvest without a tent or humidifier. Compared with kits that ship dry spawn you must colonize yourself, the pre-colonized bag cuts weeks off the wait and lowers contamination risk. The trade-off is that you get one flush cycle's worth of spawn and must supply your own light and humidity routine.

Best forFirst-time indoor mushroom growersSmall kitchen or countertop setupsPeople who want a fast, low-effort first harvestGrowers in normal room temperatures (60-82°F)

Pros

Spawn arrives fully colonized, so fruiting starts quickly
Blue Oyster is fast-growing and forgiving for beginners
Wide 60-82°F range fits most homes without extra heating
Includes an ultra-fine mister suited to pinning
Works with indirect light only, no grow light needed

Cons

One 5-pound bag limits you to a small number of flushes
Needs misting once or twice daily, so it is not hands-off
Requires 12 hours of indirect light and steady humidity
Spore drop from mature caps can be messy indoors
No humidity dome or fruiting chamber included

Midwest Grow Kits Blue Oyster Mushroom Grow Kit prices at every store

TrimleafNew
In stock
$39.00Checked 1 h ago
Visit Trimleaf

Midwest Grow Kits Blue Oyster Mushroom Grow Kit price history

Lowest price we've seen: $39.00 on Nov 11 at Trimleaf. Tracked across 1 store since Nov 11.

What reviewers say

Home growers generally report strong, fast colonization and heavy first flushes from this kit, and beginners say the included mister and simple instructions make it easy to start. Complaints center on the daily misting routine and on oysters dropping spores once caps mature.

What people mention

ColonizationPraisedGrowers say the spawn bag arrives fully colonized and pins quickly after opening.
YieldMixedFirst flushes are described as generous, but the single bag gives only a few harvests.
Misting routineCriticisedOwners say the twice-daily misting is easy to neglect and affects results.
Spore dropCriticisedMature caps release spores that leave a mess on nearby surfaces.
Ease of usePraisedBeginners find the setup and included mister simple to follow.

Specifications

Mister: 1 x 8oz ultra-fine pump mister
Mushroom Species: Blue Oyster (Pleurotus ostreatus var. columbinus)
Optimal Temperature Range: 60-82°F
Minimum Temperature: 55°F
Light Requirement: 12 hours indirect light daily
Experience Level: Beginner to Advanced
Cap Size: 5-15 cm diameter

Questions and answers

How soon will mushrooms appear?: Blue Oyster spawn that is already colonized usually pins within one to two weeks of opening and setting up. Caps mature a few days after pinning, so the first harvest comes fast.
Do I need a grow light or humidifier?: No grow light is needed; 12 hours of indirect light daily is enough. A humidifier helps in dry rooms, but daily misting with the included pump mister covers most homes.
How many harvests can I get?: Expect a few flushes from the 5-pound bag before it tires out. Blue Oyster is a vigorous fruiter, but the bag is sized for a small home grow, not a continuous supply.
Is it suitable for a total beginner?: Yes. The spawn is pre-colonized, the temperature range is wide, and the kit includes the mister. The main skill is keeping up with misting and airflow.
What is in the box?: One 5-pound Blue Oyster spawn bag and one 8-ounce ultra-fine pump mister. You supply the light, airflow and a spot at 60-82°F.
How does it compare with growing from grain spawn?: It skips the colonization stage, so you fruit sooner and risk less contamination. Growing from scratch gives more control and volume but takes longer and needs more equipment.
Where is the Midwest Grow Kits Blue Oyster Mushroom Grow Kit cheapest?: At Trimleaf, for $39.00, as of our latest check.