How may of you are growing kumquat trees from seed

[poncirusguy]

I am growing 4 Meiwa kumquats and 1 Fukushu kumquat tree from seed.  I have found that kumquats are hard to graft and that most nursery's graft to the easiest rootstock, not a compatible rootstock.  The results are poor growth and / or death.  All 5 of my kumquat seedlings out perform my grafted kumquats by far.
I would like to hear what you have learned and why you are growing from seed as well as what varieties you have. 
  

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[poncirusguy]

Coming out of the greenhouse.  Each section of glass is removed to expose the tree to more direct sunlight.

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[david]

I have been for many years and am now. Have two two year old Meiwa that are bearing a starter crop as we speak.