Long Stems, Small Caps (high CO2)

Leggy, stretched stems with tiny or trumpet-shaped caps; oysters reaching upward.

Likely causes

• Insufficient fresh-air exchange during fruiting

What to do

Increase fresh air. The current flush stays edible; the next will form better.

Not sure?

Walk through the troubleshooting guide, ask the AI Grow Consultant, or check the conditions your species needs on its species page.

This entry is general growing guidance compiled from extension and trade practice; it has no single citation yet. Treat it as a starting point.

Last updated: 2026-10-19