- You Will Get 25 Seeds Of Eucalyptus Silver Dollar Tree Seeds. - This grows to about 30 feet tall and is a very neat looking tree. - This tree has a very good smell it grows well in zone 8-10 this has blue gray to silver leafs on it. - This tree will make a good wind breaker these grow well in a 7 gallon pot then you can transplant into your yard. - These do take along time for the seeds to germinate about 100 days we recommend that you put in the fridge in a moist paper towel for about a month to stratify these seeds and then put in potting soil.