Growing acorns and hazels from seed

A couple of weeks back I collected dozens and dozens of seeds:
- Acorns
- Hazels
- Plane
- Beech
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I've only done Acorns and Hazels, not Beech or Plane
"It is also important to take great care not to expose acorns and chestnuts to drying."
What constitutes drying? I've had them in the car for about three weeks!
― Terry Pratchett