FAQ
Frequently Asked Questions
Shipping & Orders
How long does shipping take?
Orders are processed within 1-2 business days. Standard shipping within the US typically takes 3-5 business days after dispatch.
Do you offer free shipping?
Yes! Free shipping is available on all orders over $75 within the continental United States.
Do you ship internationally?
We currently ship to select international destinations. Shipping costs and delivery times vary by location. See our shipping policy for details.
How are live cultures packaged for shipping?
We use sealed, sterilized containers and insulated packaging during extreme weather to protect viability in transit.
How can I track my order?
You will receive a tracking number via email once your order ships.
Liquid Cultures
How should I store liquid cultures?
Store in a cool, dry place away from direct sunlight. For liquid cultures, refrigeration at 34-39 degrees F (1-4 degrees C) is recommended. Under proper storage, typical shelf life is 3-6 months unopened.
Are your cultures guaranteed viable?
Yes. Each batch is test-inoculated on appropriate media before release to confirm viability and cleanliness. This is our in-house Certificate of Analysis. Always visually inspect for contamination, damage, or off-odors before use.
What if my culture arrives contaminated?
Contact us within 7 days with photos and we will send a free replacement or full refund. See our return policy.
Substrates & Grain Bags
How should I store substrates and grain bags?
Store in a cool, dry place. Avoid exposure to direct sunlight or extreme temperatures. Use within 30 days of receipt for best results.
Are grain bags pre-sterilized?
Yes, all grain bags and substrates are sterilized and sealed under controlled conditions before shipping.
What substrates do you offer?
We offer CVG (Coco Coir/Vermiculite/Gypsum) and Masters Mix formulations, both sterilized and ready to use.
Quality & Trust
How do you ensure quality?
Every product is prepared under controlled conditions using sterile technique. Each batch of cultures is test-inoculated on appropriate media before release to confirm viability and cleanliness.
What is your return policy?
Due to the nature of biological materials, we cannot accept returns on opened items. However, if your order arrives damaged or contaminated, we offer a clean-or-replace guarantee. See our return policy for full details.
Do you offer support for new growers?
Absolutely. Email us at support@flyingmushroom.com with any questions about products, growing, or your order. We are happy to help.