05-03-2013 01:49 PM
Hello gardener5840 and thank you for joining The Community. We are glad that you are here.
I confirmed with Home Depot Online Customer Care that you can use up to 11 gift cards on a single transaction (single purchase). All of the gift cards used must be Home Depot Gift Cards.
Please retain your Gift Card(s) until you have either received your online order or picked it up at a store location. No charges will be deducted from your Gift Card(s) until your order has been shipped out to you or until you receive your "Order Ready for Pick Up Notification."
If you have other questions, please contact 1-800-430-3376 for more assistance.
I am a Home Depot Store Associate, trained and authorized to help people on the Internet.