⏱ 11 min read 🔬 Mushroom guide
Quick Answer: Most gourmet mushrooms grow from a fruiting block to harvest in 10 to 14 days at home. Pink oyster fruits fastest at 8 to 12 days. Pearl, blue, and yellow oyster take 10 to 14 days. Lion's mane takes 10 to 14 days. Shiitake is the slow species at 21 to 28 days. The number people miss: a fruiting block is "ready to fruit" because the mycelium has already spent 2 to 4 weeks colonizing the substrate before it gets to your kitchen.
8 min read
Timeline guide
Real white Lykyn smart chamber on a kitchen counter with a fresh cluster of pink oyster mushrooms inside, modern kitchen behind
From colonized block to harvest, most species take 10 to 14 days. The block did the slow work before it shipped.
10-14
Days to harvest for most gourmet species
3
Phases from setup to harvest
2-3
Successive flushes from one block
8
Days, fastest species (pink oyster)

Pin in five days.

Harvest in fourteen.

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The block did the slow work before it shipped.

The Three Phases of Mushroom Growing

Every gourmet mushroom passes through three phases. The kit you buy and the question "how long does it take" depend on which phase you start at.

  • Phase 1: Colonization (2 to 4 weeks). The mycelium grows through a sterilized substrate, eating and digesting it until the block is fully laced with white. This happens at the supplier before shipping.
  • Phase 2: Pinning (3 to 7 days from your kitchen). Tiny mushroom primordia appear at the cut face on the block. Humidity and airflow trigger this phase.
  • Phase 3: Fruiting (7 to 10 days). The pins grow into harvestable mushrooms. Most species double in size every 24 to 36 hours during peak growth.

When you buy a fruiting block, you skip Phase 1. That is why the answer to "how long" depends on whether you mean from scratch or from a block.

Most species double in size every 24 to 36 hours during peak growth. The change is visible day to day.

- Lykyn growing guide

How Long Does Each Mushroom Species Take?

Same chamber, same humidity, same fruiting block format. The variable is genetics. Pink oyster is the racehorse; shiitake is the slow burn.

Block-to-harvest, by species

Days from setting up a colonized 5-pound block to first harvest, in a Lykyn chamber.

Pink Oyster
8 to 12 days
Pearl Oyster
10 to 14 days
Yellow Oyster
10 to 14 days
Blue Oyster
11 to 15 days
Lion's Mane
10 to 14 days
King Trumpet
12 to 16 days
Shiitake
21 to 28 days
Day 07142128

Day-by-Day: What to Expect from a Fruiting Block

0

Day 0: Setup

Block out of the box, sealed bag still on. Acclimate it on the kitchen counter for 24 to 48 hours so the mycelium recovers from shipping. Cold-shock optional for shiitake.

1

Days 1 to 3: Acclimation

The block sits in your kitchen, sealed. The mycelium settles, sometimes putting out a few faint white tendrils on the surface. Nothing visible to harvest yet.

2

Days 3 to 7: Pinning

You cut a small X on the block (or remove the bag for shiitake). Within 3 to 5 days, tiny primordia appear at the cut face. They look like small white knots, 1 to 3 millimeters across.

3

Days 7 to 12: Growth

The pins double daily. Caps form, gills appear underneath (oysters), or spines start to point down (lion's mane). The cluster fills out.

4

Days 10 to 14: Harvest

Caps fully unfurled but edges still flat. Twist the cluster off in one motion to keep substrate intact. A 5-pound block delivers 1.0 to 1.5 lb fresh on the first flush.

5

Days 14 to 28: Flush 2

After the first harvest, soak the block in cold water for 6 to 8 hours, drain, return to the chamber. Pins reappear in 7 to 14 days. Yield drops to roughly half the first flush.

6

Days 28 to 42: Flush 3 (optional)

A third flush is possible but yields drop again to roughly a quarter of the first. Many growers compost after the second flush and start a fresh species in the chamber.

Why a Smart Chamber Hits the Lower End of the Range

The day ranges in this guide cover both DIY setups (humidity tents, plastic bags) and smart chambers. A Lykyn chamber consistently lands at the lower end of each range. The reason is humidity stability.

Lykyn Bone White smart mushroom grow chamber on kitchen counter

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Plug-and-play smart chamber with humidity, light, and airflow dialed in for every species. Beginners harvest their first flush in days, not months.

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  • Steady 85 to 90 percent humidity. Manual misting averages 75 to 85 percent with regular dips to 60. Pins abort at humidity dips below 70 percent.
  • Hourly fresh air exchange. The chamber cycles air every hour automatically. Manual setups need the lid opened (which spikes contamination risk) or skipped (which slows pinning).
  • App-controlled species presets. Each species has different humidity and airflow needs. The chamber auto-tunes; manual setups average across species.

Net effect: shaving 2 to 4 days off the timeline of most species, plus higher yield per flush.

Pins abort at humidity dips below 70 percent. The chamber stays at 85 to 90 percent. That single number explains most of the time difference.

- Lykyn growing guide

How Long Does It Take to Grow Mushrooms from Scratch (No Kit)?

Starting from spore (no pre-colonized block) takes 6 to 10 weeks for most species. The timeline:

  • Week 1. Inoculate sterilized grain spawn with a spore syringe or liquid culture. Incubate at 75°F.
  • Weeks 2 to 4. Spawn fully colonizes (white throughout). Mix into bulk substrate (sawdust + bran).
  • Weeks 4 to 8. Bulk substrate fully colonizes (4 to 6 weeks).
  • Weeks 8 to 10. Initiate fruiting (cut, drop in chamber). Pins in 5 to 7 days, harvest 7 to 10 days later.

Most home growers skip this and buy pre-colonized blocks. The supplier handled the slow phase under sterile conditions, which avoids the contamination losses that defeat 30 to 50 percent of from-scratch attempts.

Two weeks of waiting.

Two weeks of harvest.

A year of fresh mushrooms on your counter.

Frequently Asked Questions

How long does it take to grow oyster mushrooms?

Pearl oyster: 10 to 14 days from a fruiting block. Pink oyster: 8 to 12 days (fastest). Blue oyster: 11 to 15 days. Yellow oyster: 10 to 14 days. All assume a colonized block as the starting point.

How long does shiitake take?

21 to 28 days from a colonized block. Shiitake is the slow species: it browns the block first, may need a cold-shock to trigger pinning, then fruits over 5 to 7 days.

How long does lion's mane take?

10 to 14 days from a fruiting block. Pinning starts around day 5 to 7. The cluster forms its signature spines around day 10 to 12. Harvest at peak before spines start curling up.

Can I speed it up?

Two ways: pick a fast species (pink oyster, pearl oyster) and use a sealed chamber that holds humidity steady. The chamber alone shaves 2 to 4 days off most species.

How long does the whole growing process take from spore?

6 to 10 weeks total. Most home growers buy pre-colonized blocks and skip the 4 to 6 week colonization phase that suppliers handle under sterile conditions.

How often can I get a new harvest?

2 to 3 flushes per 5-pound block, spaced 14 to 21 days apart. With a Lykyn chamber, that is roughly one fresh flush every 2 weeks year-round if you stagger blocks.

Bottom Line

If you start with a pre-colonized fruiting block, expect 10 to 14 days for most gourmet species and up to 4 weeks for shiitake. A Lykyn smart chamber shaves 2 to 4 days off the lower end and bumps yield. If you start from spore, expect 6 to 10 weeks total.

Ready to put a block on your counter? browse Lykyn fruiting blocks, or see the Lykyn Smart Mushroom Grow Box if you do not have a chamber yet.

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