Fungi Farm Mushroom Windowsill Kit - King Oyster

Mushroom Windowsill Kit – King Oyster

Our Windowsill Mushroom Kits will allow anyone to grow King Oyster mushrooms from their very own windowsill. Handfuls of these delicious mushrooms will now be just clutches away from your favourite dish.

King Oyster is an popular variety from the mushroom family. A strong flavour when eaten raw but, celebrated for their meaty texture and umami flavour when cooked. These mushrooms make a great addition to Asian cuisine including stir-fries and rice dishes.

Mushrooms are tasty, low in calories, high in protein and a great source of fiber especially for those on plant-based diets. They provide you with vital vitamins including vitamin B, selenium, potassium and copper. With our handy kits, you’ll soon have this delicious and health beneficial vegetable at just the fraction of the cost.

Whether you’re a full-time gardener or beginner, this handy kit includes a base tray, lid, and pre spawned substrate and easy to follow instructions.

Planting and care:

Simply keep them moist and out of direct sunlight and your first crop should be ready to pick in a matter of weeks, plus you can expect at least another 2 pickings after that. These kits need to be started on receipt and are unsuitable for storage.

Dimensions:

3 Litre = 17.5cm (7") x 27.5cm (11") x 8cm (3½") depth.

7.5 Litre = 32cm x 26cm x 12.5cm

Growing Information

Growing Instructions:
This kit is designed for indoor growing. Choose a clean area away from direct heat sources and draughts. Avoid direct sunlight to prevent overheating. Mushrooms prefer indirect, filtered light.
Please note: Any white bubbly growths indicate where mushrooms are forming, and will later grow into king oyster mushrooms.

Step 1. Activate the substrate
• If you see tiny bubbles on the top of the pack, completely remove the plastic bag from the package.
• Soak the substrate block in water for about 30 minutes.
• Place the block back into the container and cover with the transparent lid. This allows better oxygen intake and triggers mushroom development.
Tip: Wash your hands well before touching the substrate block to prevent cross contamination with any other fungi.

Step 2. Create the right environment
• Store the kit in a sheltered, humid area at 16-19°C (61-66°F).
• Avoid direct sunlight to prevent overheating. Mushrooms prefer indirect, filtered light
• Spray lightly twice a day so the outside remains moist.
• This stage mimics autumn conditions, which king oyster mushrooms prefer.
• Make sure the transparent lid remains seated on the container. This helps retain moisture while allowing enough fresh air inside.

Step 3. Encourage mushroom formation
• After around one week, more bubble-like growths will appear and start developing into mushrooms.
• Continue spraying regularly during this stage.

Step 4. Harvest
• Harvest when the smallest mushroom cap reaches 2 to 4 cm in diameter and the cap has just curled down.
• Grasp a bunch by the cap and break them off carefully.

Step 5. Further harvests
• After the first harvest, which is usually the largest, continue spraying.
• A second crop normally appears after around 2 weeks.
Please note: The yield in subsequent crops will decrease as nutrients are used up.