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Portabella Mushroom Fruiting Kit

Portabella Mushroom Fruiting Kit

$34.00
$34.00 $34.00
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Grow hearty, meaty portabella mushrooms right at home.

This kit lets you grow one of the most popular culinary mushrooms in the world — known for its rich flavor, large caps, and versatility in the kitchen. With minimal daily care, you’ll be harvesting fresh mushrooms perfect for grilling, stuffing, and more.

Why You’ll Love It

  • 💧 Just add water - simple setup
  • 🍄 Produces large, meaty mushrooms
  • 🔄 Multiple harvests (typically 2 flushes)
  • 🍽️ Perfect for grilling, stuffing, and cooking
  • 🧪 Great for beginners and home growers

What’s Included

  • Fully prepared mushroom growing medium
  • Casing soil (to activate fruiting)
  • Humidity tent
  • Step-by-step instructions

👉 Everything you need to grow at home

How It Works

  1. Hydrate the casing soil
  2. Spread it evenly over the mushroom block
  3. Mist regularly to keep the surface moist
  4. Cover loosely with the humidity tent
  5. Watch mushrooms develop and grow

What to Expect

  • Mushrooms begin forming within a few weeks
  • Produces 2 flushes under proper care
  • Total yield: ~2–3 pounds of mushrooms

What Are Portabellas?

  • Mature version of brown button mushrooms
  • Large caps with rich, savory flavor
  • Smaller versions are called criminis

👉 Same mushroom - just harvested at different stages

How to Harvest

  • Harvest before or just after caps open
  • Twist gently to remove the mushroom
  • Trim excess soil before use

Between Flushes

After your first harvest:

  • Let the kit rest for about 2 weeks
  • Reduce watering during this time
  • Then resume misting for the next flush

👉 This “rest period” helps the kit recharge

Troubleshooting

  • Green mold can occasionally appear
  • It is not harmful but should be treated quickly

👉 Lightly treat affected areas with a diluted bleach solution (avoid spraying mushrooms directly)

Growing Conditions

  • Cool to moderate room temperatures
  • Indirect light
  • Consistent moisture (not waterlogged)

Perfect For

  • Home cooks and food lovers
  • Beginners wanting a classic mushroom
  • Kitchen countertop growing
  • Unique, edible gifts

Need Help Getting Started?

We’ve got you.

FULL INSTRUCTIONS

Portabella Fruiting Kit

What is a portabella fruiting kit?
A portabella fruiting kit is a prepared growing system that includes a colonized mushroom block and casing soil. Once hydrated and maintained properly, it will produce portabella mushrooms at home.
Is this beginner-friendly?
Yes - this kit is beginner-friendly, but it does require following a few simple steps like preparing the casing soil and maintaining moisture.
How do I use the kit?
• Hydrate and apply the casing soil
• Keep the surface evenly moist
• Cover loosely with the humidity tent
• Allow mushrooms to form and grow
• Harvest when ready
How long does it take to grow mushrooms?
Mushrooms typically begin forming within a few weeks after setup, depending on temperature and moisture levels.
How much will the kit produce?
You can expect:

• About 2–3 pounds of mushrooms total
• Typically 2 flushes with proper care
What is a flush?
A flush is a cycle of mushroom growth. After harvesting, the kit rests and then produces another round of mushrooms.
Why do I need casing soil?
Casing soil helps trigger mushroom formation and provides the right environment for mushrooms to develop.
How often do I need to water it?
Mist regularly to keep the casing soil moist but not waterlogged. Allow slight drying between misting to maintain balance.
Where should I keep the kit?
• Cool to moderate room temperature
• Bright, indirect light
• Away from direct sun and heat sources
What’s the difference between portabella, cremini, and button mushrooms?
They are the same species.

• Button mushrooms = harvested young
• Cremini = slightly more mature
• Portabella = fully mature with large caps
When should I harvest the mushrooms?
Harvest when:
• Growth begins to slow
• Caps start to separate from the stem

Twist gently to remove the mushroom.
What happens after harvesting, between flushes?
After harvesting:

• Let the kit rest for about 2 weeks
• Reduce or pause misting during this time
• Resume misting to trigger the next flush
What if I see green mold?
Green mold can occasionally appear and should be treated quickly.

• Use a diluted bleach solution on affected areas
• Avoid spraying directly on mushrooms
Can I grow this year-round?
Yes - this kit can be grown indoors year-round.
What do I do after it stops producing?
You can:

• Compost the material
• Add it to your garden
• Use it in soil-building projects
When will my order ship?
Most orders ship within 1–2 business days.
What makes your kits different?
• Fresh, actively growing cultures
• Designed for reliable home cultivation
• Produces high-quality, flavorful mushrooms

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