The only head-to-head comparison ranking for this keyword is a sponsored review where the writer received both kits for free, measured zero yields, and mentioned no actual numbers. The second result is paywalled. So here’s the data table nobody published. If you’ve been searching for a real North Spore vs Root Mushroom Farm grow kit breakdown with actual yield numbers, this is it.
Quick Answer: North Spore buy on Amazon wins on first-flush yield, total output per dollar, and beginner-friendliness. Root Mushroom Farm check current price reaches its third flush faster than any kit in controlled testing, which matters if you care more about frequency than raw weight. Get North Spore if you’re new or optimizing for total yield. Get Root Mushroom Farm if you want fast cycling and don’t mind more complex instructions.
Root Mushroom Farm—Golden Oyster Mushroom Grow Kit
Golden oyster log kit with humidity tent, fruits in about a week, multiple flushes guaranteed on the first
~$24.99
BloomBox Blue Oyster Mushroom Grow Kit – Spray & ...
Pre-inoculated blue oyster block kit, first flush in about a week, up to 1 lb total yield
~$24.99
North Spore Organic Lion's Mane Mushroom Grow Kit, 4 lbs
4 lb lion's mane kit yields 0.5-1.5 lbs mushrooms in 14-21 days with daily misting, ideal for indoor countertop growing.
~$24.99
The Numbers Side by Side
This is the table that should exist somewhere on the open web and doesn’t. Yield figures come from a controlled head-to-head test of five kits, North Spore’s lion’s mane against golden oyster and three others: For the cost side of the same question, see my price-per-gram comparison .
| Metric | North Spore (Lion’s Mane) | Root Mushroom Farm (Golden Oyster) |
|---|---|---|
| Substrate weight | 4 lbs | 3 lbs |
| Price (approx.) | ~$24.99 | $25-30 |
| First-flush yield | 147g | 72g |
| Second-flush yield | 90.7g | not published |
| Days to first pins | 7-14 | faster cycling noted |
| Instruction difficulty | 2/5 | 4/5 |
| Setup steps | 3 (open, cut X, mist) | more involved |
| Misting frequency | 2-3x daily | 2x daily |
North Spore’s 147g first flush from a 4 lb block is more than double Root Mushroom Farm’s 72g from a 3 lb block. The second-flush retention is notable too: North Spore held 90.7g on flush two, which is 62% of the first-flush weight. That’s the best ratio across the five kits tested.
Root Mushroom Farm’s edge is cycling speed. It reached its third flush faster than every other kit in that same test. If you’re the type who wants to see a new harvest every couple of weeks rather than waiting on a bigger single flush, that matters.
Where Instructions Actually Differ
North Spore’s setup is three steps. Open the front of the box, cut an X into the plastic bag, spray with water two to three times a day. The instructions are printed on the side panel. You don’t need to read anything else. For someone who’s never grown mushrooms before, this is the right starting point.
Root Mushroom Farm’s instructions are overwhelming, and that’s not a small thing. Working through them feels like being handed a technical manual when you just wanted to grow something on your counter. It’s irritating in a way that matters if you’re buying this as a casual experiment or a gift for someone who isn’t deeply invested, because the complexity creates friction right at the moment when enthusiasm is highest.
But it’s not a dealbreaker if you’re willing to read carefully. The practical difference shows up most on day one. With North Spore, you’re misting within five minutes of unboxing. With Root Mushroom Farm, there’s more to parse before you get going. And if you’re comfortable following detailed instructions, the setup friction is a one-time cost that doesn’t affect the growing experience after day one.
🌱 Best for Beginners
North Spore Organic Lion's Mane Mushroom Grow Kit, 4 lbs
4 lb lion's mane kit yields 0.5-1.5 lbs mushrooms in 14-21 days with daily misting, ideal for indoor countertop growing.
Check Price on AmazonHow Long Before You See Anything
North Spore’s lion’s mane kit pins in 7-14 days, with first harvest between day 14 and 21. In practice, the faster end of that range is common under good conditions. A first flush of lion’s mane on day 10 is achievable with good humidity control.
Oyster varieties move quicker. Pins can appear within two days of setup, and the growth rate after that is fast. Doubling in size daily during the flush window isn’t unusual. The first time you see this happen it’s a little surprising.
Root Mushroom Farm’s golden oysters run similarly but with that faster cycling pattern. You might wait slightly longer on the first flush and then see the second and third arrive closer together.
Neither kit needs refrigeration before use, though North Spore’s block can be stored in the fridge for up to three months if you’re not ready to start immediately.
Hack Your Kit: Getting More Than Two Flushes
Both boxes advertise one to two flushes. That’s conservative.
The dunk-and-resoak method pushes oyster kits to four or five flushes consistently. After each harvest, submerge the block in cold water for four to twelve hours, drain it, and return it to its fruiting position. The rehydration restores moisture the substrate lost during the previous flush.
And the results compound meaningfully. Most growers tracking this across multiple blocks see first flushes around 200g from oyster kits, with total production running well past what the box suggests. A documented run lasting 3.5 months across five flushes before calling it done isn’t unusual. The block technically still had more in it.
The contamination risk does increase with each flush. You’re introducing the block to water and air repeatedly, and eventually green mold finds a way in. The practical ceiling is usually around flush four before contamination becomes likely. Sterile technique during the soak step helps. My kit troubleshooting guide covers what to do the moment it shows up.
The dunk-and-resoak method applies to both North Spore and Root Mushroom Farm kits. It changes the value math for both products.
BloomBox as a Third Option
BloomBox see on Amazon sits at a similar price point and targets the same casual home grower. It’s a blue oyster spray-and-grow format with minimal setup. There’s almost no editorial coverage of it, which makes it hard to compare directly on yield numbers.
The spray-and-grow format means it’s at least as beginner-friendly as North Spore on setup. Blue oyster is a forgiving species. For someone who finds both North Spore and Root Mushroom Farm sold out or wants a second kit running alongside the first, BloomBox is worth considering.
I wouldn’t pick it over North Spore as a first kit just because the yield data isn’t there yet, but it’s a reasonable option.
This article is part of my Gourmet Mushroom Grow Kits: The Complete Guide , a complete resource for growing gourmet mushrooms on your counter.
Frequently Asked Questions
Is a North Spore mushroom kit beginner friendly?
Yes. The setup is three steps: open the box, cut an X in the bag, mist two to three times a day. The instructions are on the side panel. No pre-soak, no equipment, no measuring anything. It’s USDA-certified organic and consistently gets called out as the easiest kit to start with.
How long does a North Spore kit take to fruit?
Colonization takes two to three weeks, then fruiting starts once conditions shift toward higher humidity. Most growers see first pins between day 7 and 14, with harvest between day 14 and 21. Lion’s mane on the faster end tends to fruit around day 10-13.
How much yield can you expect from a mushroom grow kit?
It varies a lot by block size and brand. In controlled testing across five kits, first-flush yields ranged from 35g on the smallest block to 302g from a 6.8 lb block. North Spore’s 4 lb block produced 147g. Root Mushroom Farm’s 3 lb block produced 72g. Bigger block generally means more mushrooms, all else equal.
Can you get more than two flushes from a mushroom grow kit?
Yes. The one to two flush claim on the box is conservative. With dunk-and-resoak between harvests, four to five flushes is achievable for oyster varieties. The tradeoff is increasing contamination risk with each cycle. Most growers see performance drop off around flush four regardless of technique.
What is the easiest mushroom grow kit for beginners?
North Spore. Three steps, printed instructions, no pre-soak required. Root Mushroom Farm cycles faster but has more complex instructions, which is a real friction point for first-time growers. If you’re buying as a gift or just want something that works without research, North Spore is the pick.
Are mushroom grow kits worth buying?
For the experience and the fresh mushrooms, yes. Don’t expect to replace your grocery run. A 147g first flush is roughly one good meal. The appeal is watching something fruit on your counter in under two weeks, not food independence. With the dunk-and-resoak method extending kits to four or five flushes, the value per dollar improves a lot over what the box suggests.
So the bottom line on the North Spore vs Root Mushroom Farm grow kit decision comes down to what you actually want from the experience. Root Mushroom Farm’s advantage is real but specific. Faster cycling only matters if you’re actively tending the kit and want frequent harvests. If you set up a kit and check it every few days without much involvement, that cycling speed doesn’t translate to anything useful. North Spore’s larger first flush and simpler setup will produce better results for most people who fall into that category.