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Stratification

edited November 2018 in Tools and techniques
Hi I really need some advice on how to stratify my trees. The instructions that came with the seeds say place in fridge for 5 to 8 weeks for all five types but when I searched the internet it gives differences in the amount of times they need to be in the fridge per type.

According to the internet per tree species I need to...

The Larch(larix leptolepis) needs to have 6 weeks.
The Pine( Pinus Halepensis) 3 to 4 weeks. Sweet gum 30 days.
Chinese Redbud 5 to 8 weeks. 
The Juniper needs 12 weeks in a warm place and 12 weeks in the fridge.

So my question is which instructions do I follow. The ones that came with the trees or the internet? I also was told they need three months in cold storage so I'm very confused as to what to do with my seeds at the moment. I thank you for all the advice in advance.

Posts

  • fidgetbonesfidgetbones Posts: 17,618
    Generally , hardy tree seeds can be sown in pots, covered with grit and left outside or in a cold frame for the winter. They then germinate in spring.  If the "sweet gum" is a eucalyptus, they germinate best after fire, something in the smoke sets them going. I managed it by putting some wood ash in water and watering the pots with that.
  • ObelixxObelixx Posts: 30,090
    Cunning Fidget!   Agree about the pots and winter exposure.  Much easier than using the fridge - something which undergardeners don't always appreciate anyway.
    Vendée - 20kms from Atlantic coast.
    "The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
    Plato
  • Hostafan1Hostafan1 Posts: 34,889
    I think "sweet gum" is the common name of Liquidambar.
    Devon.
  • LynLyn Posts: 23,190
    Always best to use ‘Nature’s  Own’  put them out for the winter, will get cold by themselves.
    Gardening on the wild, windy west side of Dartmoor. 

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