As others have reported the wildflowers are out in full force along the trail! We arrived on a Sunday morning a bit before 10am and there was still room in the lot...there is also plenty of room along the road for cars. The toilet at the trailhead is stocked. We passed a few backpacking groups heading out, but after the first couple of miles the trail was relatively quiet and we had a lot of solitude including on the return trip. The roar of the creek is ever present and it does drown a lot of other sounds out. The trail is in good condition, a bit overgrown at parts, so wear appropriate clothing. It is also quite exposed. The water crossings don't start until approximately 3 miles in, so if it's hot, plan accordingly for your pup. The highlights included a beautiful western tanager spotted at the end of the hike at the entrance to the trail and mountain lady slippers between 3.3-3.5 miles from the trailhead. 

Wildflowers galore on this long uphill river hike with slow elevation gain- The higher you go, the more uncommon the flowers to see. If you are a birder, the river is too loud at present to hear much until you get up to the higher elevations. I saw one beautiful western tanager on a snag close to the trail And surprised a grouse or a night jar on my way back down around 6 PM close to the trail otherwise I heard a lot of birds, but didn’t see them. About 3 miles up from the trailhead, I saw a rattlesnake about 12 inches off the trail in the bushes. When it heard me coming, it started rattling. It moved quickly uphill about two more feet and coiled up and rattled at me for quite a while. I was in no danger from my spot on the trail.

Many thanks to the backpacking couple and their dog who shared some snacks with me so I could push on and get a good view of the Stuart mountain range before I headed back down. I clocked 16 miles and my feet were quite sore at the end of that long hike.

On a Friday in June, I saw about eight other people coming and going so there was a lot of solitude on the trail.

The wildflowers were outstanding.

vegetation grows into the trail about 50% of the time so long pants are recommended in my opinion

A huge thank you to the multi-day WTA crew working on the trail!! Part of the crew is in photo 1. Most noticeable is the great work they are doing trimming back the trail.

We, a group of 10 Mountaineers, hiked 6.7 miles out. The trail is in great shape, one step-over blowdown and an older walk-around.

The variety of flowers is superb and will be for the coming month, I'd estimate that we saw between 80-90 species in bloom. In the first few miles there is beautiful yellow, orange, and red harsh paintbrush (photo 2, some of it is fading, get there soon if you want to see it at its best), loads of lupine (photo 3, it's a good year for lupine here, much of it has beautiful color gradients), Lyall's mariposa lilies might be peaking, and the thick areas of snowbrush are just starting to aromatically bloom. You'll also find sticky cinquefoil, choke and bitter cherry, larkspur, Chelan penstemon, thimble berry, and many more. The sunflowers are blooming at the beginning of the trail and there are more to come in the first 2 miles. There were thick areas of plumed (and some starry) false Solomon's seal throughout our route (the thickest area is around the 5 mile mark, photo in slideshow). Trillium did really well here, there are many very thick areas, some fresh and white, and others fading to all sorts of pretty colors. The forested areas beyond 3 miles have a few fairy slippers, many heartleaf springbeauties mixed with yellow violets, baneberry, meadow-rue (both sexes), and we saw 1 Oregon anemone at about the 6 mile mark (photo 4), in the 7th mile the open areas have shrubby penstemon, spreading phlox, Columbia lewisia, some fresh balsamroot. At about 6.5 miles is a rocky, open area that has lots of Columbia Lewisia right now and beautiful larkspur. It is a great lunch spot with rocks to sit on, views of the jaggedy Enchantments to the north, and the western larch-covered forest of the Teanaway to the south.

Mountain lady slipper update: the ones I know of are not blooming yet, based on what's blooming currently and past years, I would guess that these will appear on June 10th or so.       

This is one of my local trails I use for training rides and I only got about 8 miles up before there is a big tree down across the trail and people were making a side trail that was not sustainable.
I took photos of it and submit that to the Forest Service so hopefully that could be fixed before a landslide is caused.

Lots of other users with dogs, some leash, some not, they were well-behaved.

Somewhere around 6 miles there was a rattlesnake  

And then, somewhere before the horse camp right near the rivers edge, the ground has sinkholes that are getting worse. Probably needs a reroute 20 feet set back as the spring floods undercut the trail  

trillium abounds in white purple and chocolate. 

We joined a few friends (and a dog) on what was basically a pleasant woods walk up this trail. We started around 11am, and temps were mild with mostly cloudy skies. The trail was full of wildflowers of nearly every known variety for the east side of the Cascades. Ingalls Creek was pretty full, but I believe it was roaring faster when we went here this time last year. The trail is a fairly steady but very modest climb, doable by almost anyone.

Foot traffic was pretty steady going up as well as back down, with multiple groups of 6+ people encountered frequently, most of them backpackers, and some with dogs (all leashed). The various spots near the creek quickly filled up with tents so there weren't a lot of places to get close to the water without walking through someone's campsite. We hiked close to 3 miles before finding a decent lunch spot and then turning around and going back.

If you like wildflowers now is the time to go and hike this trail. Once the show is over there isn't going to be much left to see unless you're simply here to go backpacking all the way to Stuart Pass or just camping by the water.