Good Morning Gwen,

Thank you for contacting us.  Attached is an article on white peaches.  Research says that white peaches are not recommended to be canned.  Due to their PH, they are a low acid food and canning will not destroy harmful bacteria.  Freezing is the recommended method of preservation.

Preserving White Peaches (psu.edu)

Thank you again for contacting us.  If we can be of further assistance, please let us know.

Lynn & Kathy

Volunteers
Fort Bend County Master Gardeners
Research and Gardening Help Desk Team
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https://fbmg.org/

Do you know if this would apply to cooked jam?
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Dear Gwen,
       We are unable to find any information that would indicate the ph changes in jam.  While some recipes call for a healthy quantity of lemon juice that is not usually enough to change to ph.  Your safest bet is to make freezer jam with the white peaches. 
Preserving Peaches | Home & Garden Information Center (clemson.edu)
Peaches-Halved or Sliced - National Center for Home Food Preservation (uga.edu)

Thank you again for contacting us. If we can be of further assistance, please let us know.

Regards,
Lynn
Volunteer
Fort Bend County Master Gardeners
Research and Gardening Help Desk Team
<personal data hidden>

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https://fbmg.org/