Plants are available at Home Depot, and if you have an applicable coupon then yes you are allowed to use them. As long as the coupon itself isn't expired, you should be in the clear to use it if you have it with you at checkout.
You can find Home Depot coupon codes at http://www.retailmenot.com/view/homedepot.com. Another great coupon site is http://www.techbargains.com/vendor_detail.cfm/384/Home-Depot-coupon-code.
You can find current home depot coupon codes to use for online purchases at websites such as www.retailmenot.com, www.mahalo.com and www.couponcabin.com
If there is no expiration date, chances are that the coupon is still good. In order to find out for sure, you can call your local Home Depot and ask them.
I do not believe that you can purchase a Home Depot coupon code online. Occasionally on their site they will have a special offer that will direct you to enter a special code upon checkout for a specific discount, but I am not able to find any information on actually being able to purchase a coupon code. Hope this helps!
It really depends on what the coupon that was sent to you says. Most coupon codes are good online only, but there are some companies that allow you to print the coupon code and redeem in store as well.
You can find Home Depot coupons at http://www.techbargains.com/vendor_detail.cfm/384/Home-Depot-coupon-code. Another excellent site is http://www.retailmenot.com/view/homedepot.com.
Home depot coupons can be found online by checking out coupon sites and I would start with home depot's web site to see what they have on offer- they want your business so they should have some good deals.
The best way to get home depot coupon codes would be to visit their website and request the codes. They would mail the the coupons or they will email them to you.
Tech Bargains usually has a lot of coupons that work very well, I use them a lot. You can view all of their coupons here: http://www.techbargains.com/vendor_detail.cfm/384/Home-Depot-coupon-code?r1=1
It depends. Most of the time the coupon codes are for a certain amount off of the purchase. Other times though, it is for a certain amount off a very specific item.
Often times, you can find promotional codes by searching on the internet. Sometimes they will be listed on the home page of the seller's website, or in the sale flyers in the newspaper.
While 20% is a fairly large discount to expect from a free online coupon, there are some websites that might offer 20% off Home Depot coupons. "Coupons" is one such site. "Retail Me Not" is another.