How long until I can harvest?

Oyster mushrooms typically appear within a few days and are ready to pick in about 10 days. A second, smaller flush often follows if you keep misting.

How often do I mist it?

Mist the opening once or twice a day with the included sprayer. Keep the box near a window with indirect light and away from direct sun and drafts.

Why did my block not grow mushrooms?

Common causes are a dry block, too little light, or a block that arrived damaged or contaminated. Contact the seller for a replacement if nothing pins after two weeks.

Can I grow more than one batch from the box?

Usually you get one strong flush and a smaller second one. After that the block is spent and the kit is not designed for refilling.

Is it safe to grow mushrooms in a kitchen?

Yes. Oyster mushrooms grow on the enclosed substrate and release spores only as they mature, so harvest promptly and keep the box away from people with mold sensitivities.

Do I need any extra equipment?

No. The box, substrate and mister are included. You only need water and a spot with indirect light.

What do buyers say about the Back To The Roots Organic Mushroom Grow Kit Oyster?

Rated 4.5 out of 5 from 1,290 ratings.

Back To The Roots Organic Mushroom Grow Kit Oyster

Best price now

$13.39at WalmartChecked 24 min ago

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Back To The Roots Organic Mushroom Grow Kit Oyster

Best price now

$13.39at WalmartChecked 24 min ago

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Lowest price today: $13.39 at Walmart (checked Nov 10, 2026).
Checked at 2 stores.

Our take on the Back To The Roots Organic Mushroom Grow Kit Oyster

This is a countertop kit for growing pearl oyster mushrooms indoors from a pre-colonized block of organic substrate. You open the box, mist the opening daily with the included sprayer, and harvest in about 10 days, with a second flush often following. It suits beginners, gift-givers and small kitchens with a windowsill and no garden. Compared with DIY spawn-and-substrate setups it is far simpler but yields less and gives you no control over the strain. Reviewers like the speed and the fun of watching it fruit; the common complaints are blocks that never pin or dry out.

Best forFirst-time growersFoodie and garden-themed giftsSmall kitchens with a windowsillFamilies growing with kids

Pros

Pre-colonized block: no spores, sterilization or setup
Harvest in roughly 10 days, often a second flush
Includes a mister and clear instructions
Certified organic substrate
Compact countertop footprint

Cons

Some blocks fail to fruit or dry out before harvest
Small yield per box, usually a meal or two
Needs daily misting and indirect light
Single-use box; limited reuse

Back To The Roots Organic Mushroom Grow Kit Oyster prices at every store

WalmartNew
In stock
$13.39+ $5.99 shippingChecked 24 min ago
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WalmartNew
In stock
$13.39+ $6.99 shippingChecked 24 min ago
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Back To The Roots Organic Mushroom Grow Kit Oyster price history

Lowest price we've seen: $13.39 on Nov 11 at Walmart. Tracked across 1 store since Nov 11.

What reviewers say

4.5 / 51,290 ratings

Owners rate it highly as a simple, fast first grow and a popular gift. The recurring complaints are blocks that never pin, mold, or dry out, and modest harvests.

What people mention

Ease of usePraisedOwners say opening the box and misting daily is simple enough for beginners and children.
SpeedPraisedMany report mushrooms appearing within days and a first harvest around the 10-day mark.
YieldMixedSome get a good first flush and a second; others harvest only enough for one meal.
Fruiting failureCriticisedA share of buyers report blocks that never pinned or turned moldy before harvest.
MoistureCriticisedReviewers say the block can dry out if misting is missed, and some over-mist and see mold.
Gift appealPraisedIt is often bought as a gift and described as a fun, unusual present for foodies and families.

About the Back To The Roots Organic Mushroom Grow Kit Oyster

The Back to the Roots Organic Mushroom Grow Kit is the easiest way to grow your own organic & gourmet mushrooms at home! Just open, spray daily with the included mister, and in 10 days you'll be harvesting your own delicious, gourmet oyster mushrooms right out of the box. Enjoy oyster mushrooms year-round; just place the box near a window with indirect light. The perfect gift for your foodie, garden-loving, and eco-conscious friends & family.

Specifications

Weight (lb): 2.25Source
color: MulticolorSource
size: 2.25 lbsSource
Author Name: Luke Coutinho
Binding Type: Paperback
Book Format Type

Questions and answers

How long until I can harvest?: Oyster mushrooms typically appear within a few days and are ready to pick in about 10 days. A second, smaller flush often follows if you keep misting.
How often do I mist it?: Mist the opening once or twice a day with the included sprayer. Keep the box near a window with indirect light and away from direct sun and drafts.
Why did my block not grow mushrooms?: Common causes are a dry block, too little light, or a block that arrived damaged or contaminated. Contact the seller for a replacement if nothing pins after two weeks.
Can I grow more than one batch from the box?: Usually you get one strong flush and a smaller second one. After that the block is spent and the kit is not designed for refilling.
Is it safe to grow mushrooms in a kitchen?: Yes. Oyster mushrooms grow on the enclosed substrate and release spores only as they mature, so harvest promptly and keep the box away from people with mold sensitivities.
Do I need any extra equipment?: No. The box, substrate and mister are included. You only need water and a spot with indirect light.
Where is the Back To The Roots Organic Mushroom Grow Kit Oyster cheapest?: At Walmart, for $13.39, as of our latest check.
What do buyers say about the Back To The Roots Organic Mushroom Grow Kit Oyster?: Rated 4.5 out of 5 from 1,290 ratings.