Lion's Mane Mushroom Grow Kit

Grow Lion’s Mane Mushrooms at Home

Lion’s Mane (Hericium erinaceus) forms a rounded white fruit body that develops soft teeth or icicle-like spines. The block arrives fully colonized so you can focus on providing humidity, gentle fresh air, indirect light, and the correct side opening.

Keep the block inside its original plastic grow bag. Make only a small 1–2 inch X or V-shaped cut on one broad side. A smaller opening helps the block hold moisture and encourages the fruit body to form from one area.

What Healthy Growth Looks Like

Lion’s Mane may first appear as a small white bump at the cut site. As it grows, it should become a rounded white mass and then develop soft teeth. White, cream, or slightly pink/yellow tones can be normal; green fuzzy growth is not.

Harvest and Second Flush

Harvest while the fruit body is still mostly white and the teeth are clearly developed, before the tips become heavily yellow, brown, or dry. After harvest, keep the block humid. If it still feels heavy, continue normal humidity care. If it feels dry and light, briefly soak for 5–20 minutes and drain well. Do not soak Lion’s Mane blocks for many hours.

How to Use Your Lion’s Mane Grow Kit

1. Remove the grow kit from the RMS cardboard shipping box. Keep the block inside its original plastic grow bag.
2. Wash your hands or wear clean gloves. On one broad side of the bag, make a small X or V-shaped cut about 1–2 inches wide. Do not cut a large window.
3. For countertop growing, place the block on a plate or tray and loosely cover it with a clean plastic bag as a DIY humidity tent. Leave the bottom loose or add several small holes for fresh air.
4. Mist the inside walls of the humidity tent 1–2 times per day, or more often if the room is dry. Avoid spraying the developing Lion’s Mane directly.
5. For an automated grow tent, aim for 60–70°F, 85–95% humidity, indirect light, and gentle steady air exchange. Avoid direct fan blast.
6. Harvest when the fruit body is still mostly white and the teeth or icicle-like spines are clearly developed.
7. After harvest, remove leftover tissue. If the block feels dry and light, soak it briefly for 5–20 minutes, drain well, and return it to fruiting conditions.

Do not rely on a fixed number of days. Lion’s Mane should be harvested by appearance, and heavy direct misting can cause wet, yellow, or damaged growth.