I've been wanting to see the blooming hedgehog cactus and thanks to recent reports, I decided to try my luck. After a slow 3.2 mile drive from the paved Yakima Canyon Road (30 minutes worth of driving b/c of the very rocky and rutted road), I reached the "trailhead". Basically, when you have almost reached the radio tower on the top, the road makes a sharp bend to the right for that last push up the final knoll. Don't drive up to the towers. Park at the open grassy space at that right bend. I followed the faint jeep road and it flattens out for a bit, then starts to drop and lose elevation on the backside. Nice big head clover, lupine, buckwheat here but no cactus. I scrambled up the hill (ridge to my left) and plateaued with great views to the west. Mt Adams, Mt Rainier, and then the Stuart range up north. Yakima River at your feet. I saw two deer, and no snakes thank goodness. It was up on this ridge top that I found the cactus. Actually, if I'd have walked the ridge from the start and not followed the jeep road very far, I would have found them faster.
Flowers: bitterroot leaves (what a show this will be in a few weeks), hedgehog cactus, balsamroot, bighead clover, phlox, lupine, thyme-leaved buckwheat, pepperpod, prairie stars, milk vetch (long stemmed and wooly pod), bearded owl clover, desert parsley, narrow-leaved haplopappus.