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90mm Petri Dishes — 20 Pack | Plates for Agar, Culture Expansion & Mycology Work
€9,99
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90mm Petri Dishes — 20 Pack | Plates for Agar, Culture Expansion & Mycology Work
Lab-sterilized and ready to inoculate.
€9,99
Pre-sterilized under lab conditions - ready to inoculate
0.2 micron filter patch + self-healing injection port
Made fresh in small batches - never shelf stock
100% sterility guaranteed - we replace it or refund you, no questions asked
100% sterility guaranteed
Free EU shipping over 99 EUR
4.8 - 300+ verified reviews
Free replacement if contaminated
Ships from Slovakia - EU delivery 2 to 6 business days
Lab-Grade Sterility
Every bag sterilized and sample-tested. Near-zero contamination risk.
Ready to Inoculate
No prep. No pressure cooker. Inject your culture and grow.
Free Mycology Support
Expert growing advice from our team - always included, always free.
2 to 6 Day EU Delivery
Fast, tracked shipping across Europe. Free above 99 EUR.
Simple process
From bag to harvest in 3 steps.
01
Inoculate
Inject your liquid culture, spores, or agar plug directly through the self-healing injection port. No flow hood or open transfers needed.
Day 102
Colonize and Shake
Keep the bag at 20 to 25°C in a dark spot. When 50% colonized, shake to break up and redistribute the mycelium for faster, even coverage.
Days 7 to 2103
Harvest and Enjoy
Once fully colonized, introduce fresh air and humidity. Pins appear within days. Harvest just before the caps fully open for the best flavour and yield.
Days 21 to 35Ingredients
Only what your mushrooms actually need.
Organic Rye Grain
Certified organic rye berry, hydrated to exact field capacity. Fastest, most even colonization. Never substituted with cheaper grain.
Premium Substrate
Precision-balanced for the right texture, moisture, and pH. Optimized for rapid pinning and multiple productive flushes.
0.2 Micron Filter Patch
Medical-grade gas exchange. CO2 out, fresh air in - blocks all contaminants, no sterile enclosure required.
Self-Healing Injection Port
Silicone port reseals after every injection. Clean inoculation without a flow hood. Designed for multiple access points without contamination risk.
Works best for
Which mushrooms can you grow?
Blue OysterBeginner friendly
Pink OysterBeginner friendly
Golden OysterBeginner friendly
Lion's ManeIntermediate
ChestnutBeginner friendly
King OysterIntermediate
ShiitakeIntermediate
About this product
90mm Petri Dishes — 20 Pack | Plates for Agar, Culture Expansion & Mycology Work
Sterile 90mm Petri Dishes — 20 pcs
Precision-Engineered Plates for Clean, Reliable Mycology Work
Achieve cleaner transfers, stronger cultures, and more consistent results with Freshrooms Sterile 90mm Petri Dishes. Each pack contains 20 factory-sealed plates, fully sterile and ready to support every step of your culture work — from expanding mycelium to isolating elite genetics.
These plates are the foundation of professional mycology workflows. Their crystal-clear surface and consistent form make them ideal for agar preparation, culture expansion, genetic isolation, spore germination, tissue cloning, and strain purification. Whether you're working on new cultures or refining existing ones, these dishes deliver the stability and sterility your results depend on.
Why Growers Trust Freshrooms Petri Dishes
✅ Fully Sterile & Factory Sealed – Ready to use straight from the pack with zero prep required.
✅ Perfect for Agar Work – Ideal for culture expansion, cloning, isolations, spores, and cleanup plates.
✅ Consistent Laboratory Quality – Uniform, crystal-clear plates optimized for reliable, repeatable results.
✅ Essential for Every Mycology Lab – The backbone of clean transfers, strong cultures, and contamination-free work.
Made for Precision Mycology
Each 20-piece pack is prepared under strict sterile conditions, ensuring every plate arrives clean and ready for professional use. Simply pour your agar into the plate inside a sterile environment and start your culture work.
If you don’t have access to proper sterile conditions, we recommend our Pre-Poured Agar Plates, made in a controlled lab environment for maximum success.
Your Foundation for Clean, Consistent Culture Work
Freshrooms Sterile 90mm Petri Dishes give you the stability and reliability needed for advanced mycology. From cloning elite strains to isolating high-performing genetics, these plates help you build strong, clean cultures with confidence.
🛒 Order your sterile 90mm Petri dishes today and elevate your agar work with professional-grade consistency and reliability.
Beginner and Expert Friendly
Works for first-time growers and experienced cultivators. No lab, no equipment, no guesswork.
100% Sterile Guarantee
If your bag arrives contaminated, we replace it immediately - no questions, no forms, no waiting.
Certified Organic Ingredients
Precision-balanced substrate from premium organic sources. Never substituted. Always fresh.
Sealed and Batch-Tested
Sealed immediately after sterilization. Every batch is sample-tested before it ships.
Common questions
Everything you need to know.
Yes. Our All-in-One bags are designed specifically for beginners. Everything is pre-sterilized and ready - you only need to inject your liquid culture or spores through the built-in injection port. No pressure cooker, no lab, no mixing required.
A liquid culture syringe, spore syringe, or agar plug to inoculate with. That is it. The bag contains everything else - sterilized grain, substrate, filter, and injection port.
Colonization typically takes 10 to 21 days depending on species and temperature. After full colonization, pins usually appear within 5 to 10 days. Total time from inoculation to first harvest is usually 3 to 5 weeks.
Most growers get 2 to 4 flushes from a single bag. After harvesting, soak the block in cold water for 12 hours to rehydrate, then return it to fruiting conditions.
Store in a cool, dark place away from direct sunlight. Use within 90 days of the production date. Do not freeze.
We replace it completely or refund you - your choice. No forms, no questions, no waiting. Just contact us.
Customer reviews
What growers say.
Customer Reviews
Based on 2 reviews
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Was bit late that is the only problem
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Not arrived on time, but the seller's attitude is absolutely 5*