Because I am the queen of DIYs, I tend to spend a lot of money buying supplies and tools at The Home Depot. Although I love creating and updating, the costs can really add up. Fortunately there are lots of ways to help trim some of those home-improvement expenses. Here are six ways to save at The Home Depot:

1. Price match

It really pays to compare local store prices before you leave home. If you find a better price on any identical and in-stock item, The Home Depot will match the price. But wait, that's not all—they'll actually beat the other store's price by 10%!

2. Enroll in the Garden Club

Join The Home Depot's Garden Club and get special buy-one-get-one offers, store promotions, exclusive coupons, expert advice and how-to-project information sent right to your inbox.

3. Check the Savings Center

Looking for some quick savings? Head on over to the "Savings Center" tab on The Home Depot's website. You'll find special promotions, discounted items, rebate information and coupons all in one place. Deals can change daily so check back often!

4. Peruse the leftovers

My local Home Depot has a "Leftover and Oopsies" section in the back of the store. The products tend to be heavily discounted because they are slightly damaged or leftover from another customer. I like to look for slightly dented appliances, torn bags of soil, mistinted cans of paint and wood scraps.

5. Use a competitor coupon

Some Home Depot locations will honor competitor coupons. In fact, I was able to use a Lowe's 10% off coupon at my local Home Depot. Check with your store to see if they accept competitor coupons—it depends on manager discretion and your local store's policies.

6. Score a military discount

Show the cashier your military ID and you'll get 10% off your total order. This offer not only applies to all active military personnel, it is also good for all retired and disabled veterans, reservists and immediate family members. Plus, all veterans get 10% off on the Fourth of July, Veterans Day and Memorial Day!