Step 1 — Open the Box Carefully

Take the mushroom block out of the box and remove any outer wrapping or packaging.

You’ll notice the block is covered in white mycelium — this is the healthy fungal network that grows your mushrooms.

Handle the block gently and avoid squeezing or damaging it.

Step 2 — Cut the Growing Area

Using a clean knife, carefully cut a small “X” or opening into the plastic where the mushrooms are intended to grow from.

This opening allows fresh air and moisture to reach the growing surface.

Try not to make the hole too large — mushrooms grow best when humidity stays high around the opening.

Step 3 — Keep the Kit Moist

Mushrooms love humidity.

Lightly mist the growing area with clean water 1–2 times per day using a spray bottle.

The surface should stay damp but not soaking wet.

Avoid pouring water directly onto the block or letting water pool at the bottom.

A gentle mist is perfect.

Step 4 — Put it Somewhere Suitable

Place your kit:

• Indoors
• Out of direct sunlight
• Somewhere cool to mildly warm
• With good airflow
• Away from radiators or very dry rooms

A kitchen counter, utility room or shaded windowsill usually works well.

Do not leave the kit in strong sun or next to heat sources, as this can dry it out quickly.

Step 5 — Be Patient

You may see tiny mushroom pins forming within several days, although some kits can take a little longer depending on temperature and humidity.

Once they start, they grow surprisingly quickly.

Keep misting daily and avoid touching the young mushrooms too much.

Keeping Your Mushroom Kit Healthy

Keep Humidity High

Dry air is the biggest reason kits struggle.

If your home is very dry, you can loosely place a clear plastic bag with holes over the kit to help trap humidity.

Don’t Overwater

Too much water can cause problems.

You want moisture in the air and on the surface — not a soggy block.

If the kit smells unpleasant or looks slimy, it may be getting too wet.

Healthy mushroom kits usually smell earthy and fresh.

Harvest at the Right Time

Harvest mushrooms when the caps are fully formed but before they begin dropping lots of spores.

Twist gently at the base or cut cleanly with a knife.

After the First Flush

Most kits produce more than one crop.

After harvesting:

• Continue misting
• Let the block rest for several days
• Keep humidity up

A second flush of mushrooms often appears shortly afterwards.

Top Tips

• Mist little and often
• Avoid direct sun
• Keep airflow gentle
• Don’t panic if growth is slow at first
• White mycelium is healthy and normal

With the right moisture and conditions, your kit should reward you with a brilliant flush of fresh mushrooms.