Albert,

Yes citric acid can be used to help seeds germinate. Some seeds have a very tough seed coat and using citric acid on those kinds of seeds can help soften the seed coats in some cases.

I have not used for seed germination it but I do have some citric acid for cooking purposes.

Here's a link to a site that discusses soaking juniper seeds in citric acid:

http://www.fs.fed.us/rm/pubs_rm/rm_rp263.pdf

Thanks.

TYG