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Grow location | Outdoors |
Grow speed | 1 to 2 weeks |
Shelf life | 6 months (refrigerated) |
Kit dimensions | 6in H x 9in W x 6in D |
Kit weight | 5 lbs |
Fruiting temps | 65-80°F |
Brighten your garden with the stunning Golden Oyster Plant & Grow Garden Block. This tropical USDA Certified Organic strain produces vibrant clusters of golden-yellow mushrooms with long stems that look as good as they taste. Their mild, nutty flavor—reminiscent of cashews—makes them a versatile ingredient in many dishes.
Golden oysters thrive in warm, humid environments and are perfect for gardeners seeking an easy, low-maintenance mushroom. When planted in a shaded garden bed or under trees, this block reliably produces large flushes of mushrooms, often rewarding growers with multiple harvests throughout the season.
Ideal for beginner mushroom growers and gardeners alike, this block transforms your outdoor space into a vibrant source of gourmet mushrooms.
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Remove the block from the shipping box as soon as possible. Then, unfold the top of the bag, making room for air space. It's also important to check and confirm that the filter patch is not obstructed. This will help the organism breathe and continue to thrive until you are ready to grow your fruiting block!
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Golden oyster mushrooms are vivid, aromatic, and fast-growing. They thrive in warm, humid weather and are ideal for summer cultivation in shaded outdoor areas.
How to Initiate Fruiting Outdoors
- Pick a shady spot: Choose a location with dappled or indirect light—under a tree canopy, behind a shed, or in a shaded garden bed.
- Set your block: Remove the plastic bag completely and bury your block in soil or mulch with about 1" of material on top.
- Maintain moisture: Mist the surrounding area regularly, especially during dry stretches. Keep the substrate moist but not soaked.
Temperature & Humidity
- Golden oysters require temperatures above 65°F—they won’t fruit in cooler conditions.
- High humidity and good airflow will help maintain cluster health and reduce the risk of drying out.
- These mushrooms thrive in bright but indirect light. More light encourages stronger pigmentation, resulting in deep golden caps.
Special Considerations
- Golden oysters fruit quickly and are fragile—both caps and stems can break easily.
- Harvest clusters gently and avoid direct spraying once pins emerge.
- Their shelf life is short, so plan to cook or preserve them soon after harvesting.
Harvesting
- Pick when caps are still cupped and before they begin to flatten.
- Remove entire clusters carefully at the base using a sharp knife.
- Regular harvesting encourages additional flushes.
With the right warmth and a touch of care, golden oysters will produce beautiful, flavorful flushes just days after fruiting begins.
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Temperature 65-80°F | 18-26°C Humidity (Phase 1: Primordia) 98-100% Humidity (Phase 2: Fruitbody) 88-95% CO2 Sensitivity (Phase 1: Primordia) <1,000 ppm CO2 Sensitivity (Phase 2: Fruitbody) <1,000 ppm - Primordia - The earliest recognizable stage of fruitbody development. Also known as “baby mushrooms” or “mushroom pins.”
- Fruitbody - A fully grown mushroom, the reproductive structure of the organism in which the spores are produced.
- CO2 sensitivity - When CO2 levels are too high, yields will decrease, stems will become long and stringy, caps will be small, and/or growth will halt.
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If you don't plan to use immediately, you can refrigerate your block for up to 6 months.
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The classic North Spore recipe is to slice up oyster mushrooms and sauté them in a heavy pan on medium heat with butter, garlic, and loads of fresh thyme and rosemary (or whatever other herbs you happen to have on hand!). Cook until the mushrooms have released their liquid, then continue cooking until that liquid has cooked off and the mushrooms begin to brown. Deglaze your pan with a splash of white wine, reduce once more, and finish with a touch of heavy cream. Season generously with salt.
Like all Oyster mushrooms, they retain water and may develop a viscous texture when under-cooked. If you prefer a firm or dryer texture, continue to cook Oysters until their liquid has reduced and cooked off and they begin to brown.
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If you’re going to consume home-grown mushrooms, make sure to cook your fresh mushrooms thoroughly with heat. If it is your first time eating this species, it is best to start with a small amount to check for allergies, even if cooked.
Mushrooms grow spores as they develop. This is a natural means of reproduction. This is when people with allergies or compromised immune systems may want to consider putting fruiting mushroom kits outdoors or in a well-ventilated area. Spores in mushrooms sometimes cause respiratory irritation. In rare cases, spores may also cause irritation for some non-allergic or non-immunocompromised mushroom growers. If you are one of them, it is recommended to reduce the overall spore load by harvesting mushrooms while they are still in their younger growth stages.
Making the world of mushrooms accessible to all
North Spore was launched in 2014 by a mycologist, an organic farmer, and a photojournalist -- three college friends brought together through their shared love of the mycological world.
What began as a simple love for mushroom foraging and cultivation quickly developed into an obsession with all things fungi. From there, an urban mushroom farm was born, as was the desire to spread the spore to the masses.
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Wow!!
Had an amazing experience growing my first flush of Golden Oysters These really took off after I dialed in high humidity and a warmer temp using a heating mat under my monotub. Highly recommend!
North Spore
So great to hear you are having success with your grow, Jesus. Sometimes it can take a little trial and error, but happy to hear you are dialing in some settings that are working for you. Don't hesitate to reach out with questions anytime!

Incredible!!!
Five days into putting these blocks into my Martha tent set up and it's like they grow by the hour!!!

Golden delicious mushrooms!
These have grown exceptionally quickly, and produced repeat flushes of delicious mushrooms!
North Spore
Thanks for sharing, Larz! We're so happy you're enjoying the experience.

Beautiful
Repeating bloomer of beautiful bouquets/canopies! No complaints from me.
North Spore
We're so glad you're enjoying the golden oysters, Larz! Thanks for the great review.

Beautiful flush!
One of the most showy flushes out of all the blocks we ordered. Bright golden caps! We used them to make crostini’s on homemade sourdough and served them at my sister engagement party. Super delicious!
North Spore
Congrats on your awesome harvest, John! Thanks for the review.