Sliding glass doors are awesome for letting in lots of natural light and giving you quick access to the outdoors. But it can be hard to find the right window treatments for them.
If you're looking for sliding glass door blinds or other window treatments for sliding glass doors, here are some vertical solutions that would work well AND look good while they're at it. They could also be great for wide windows, room dividers, or closet doors!
Here are my favorite sliding glass door blinds, shades, curtains, and shutters:

Sliding Panels with Wand Control: Revelation, Corbel T8704; Fabric Wrapped Cornice
These are a sleek, contemporary alternative to the sliding glass door blinds you probably remember. They're available in a wide array of shade fabrics, including solar, roller, natural, and classic Roman shades to easily match other window treatments in your room. They're also cordless and easy to clean, which makes them perfect for spaces where kids and pets will be hanging out.
I like the look of an extra thick, contrasting valance for a fresh, modern look. These are beautiful window treatments for sliding glass doors.

Bali Fabric Vertical Blinds with Cord and Chain Control and Square Corner Valance: Keepsake, Golden Years 0172
Vertical blinds are classic sliding glass door blinds. You can find them in wood, fabric, and vinyl for a variety of looks.
And, of course, they're also great for a wide window blind. If you're choosing vertical blinds for wide windows instead of sliding glass doors, I recommend having them go all the way to the floor.

3/4" Single Cell VertiCell Cellular Shade: Cosmopolitan, Fireplace Brick 2861
3. VertiCell(TM) Cellular Shades
Cellular shades are one of my favorite types of window treatments. They look clean and modern, come in a variety of colors, and (best of all) they're extremely energy saving. Their honeycomb-shaped cells trap air and help insulate your home, which is especially great if you're covering a large expanse like a sliding glass door.
VertiCell shades offer the same energy-saving benefits, but with a vertical orientation that's particularly designed for patio doors. They're budget-friendly to purchase, but even more importantly, they could save you a bundle in energy savings over time.

Decorative Panels with Grommet Top: Toki, Starfish 2780
4. Drapery
Custom drapes are the most luxurious curtains for sliding glass doors and wide windows. Custom drapes are available in the widest range of colors and patterns, as well as a variety of liner options to fit your needs.
Bali custom drapes are made with extremely high standards and careful attention to detail. Things like mitered corners with corner weights, double-turned hems, and pattern-matched seams make these curtains several steps above the readymade kind. And since you can order them in custom widths and lengths, you can make sure they are a perfect fit for your wide window or patio door.

Natural Drape with Wand Control: Spree, Studio 80745 with Standard Fullness, 1" Edge Banding: Light Sage 7173, and 6" Palisade Valance in Vertical Orientation with Valance-Only Privacy Liner: Sand 2701
Made of natural materials like bamboo, jute, grass, and woven wood, natural drapes are an excellent choice for bringing in an outdoor element. They're environmentally friendly, unique, and pair perfectly with Bali Natural Shades. I like them with 60% fullness (as opposed to the standard 10%), so they still have a full drapery look when closed.

2½" Wood Bypass Shutters with 4½" Decorative Valance and Standard Tilt: Picket Fence 1051
6. Shutter bypass tracks
Shutters are one of the more high-end options for sliding glass door blinds, but they're well worth it. They're gorgeous, durable, easy to clean, and did I mention gorgeous?! They can be ordered on a bypass track system (where two or more panels slide and pass each other), in humidity-resistant composite, or 100% North American hardwood. I think these would also be awesome as closet doors (in fact, now my wheels are turning for an upgrade to our master bedroom closet).