What an enjoyable trail! OK so you have to overlook the fact that Greendrop Lake itself is a little anticlimactic, especially after passing Lindeman so early in the hike, but I really liked the variety along the trail: some places it's a nice footbed, others it's boulders. The unlogged forest has numerous large trees, and the woodland flowers are beginning to bloom. The cracks of thunder as we crossed the boulder fields in the valley between the lakes added some atmosphere to the day.
If you don't like boulder fields (especially wet boulders), don't do this hike. There are many. If you don't like crossing roaring creeks on rocks and decaying log bridges, then I also wouldn't recommend it. A slip wouldn't be serious, but it would probably ruin your day. At least wait until later in the year when the water levels have dropped.
The trail is flooded just beyond Lindeman Lake, but getting by is straightforward over the large boulders. A few stretches in here are walkable but muddy. Further on, past the turnoff to Flora Lake, the creek takes multiple routes across the forest floor and the marked trail is impassable (unless you don't mind wading). However, there is an obvious pink-flagged route off to the left that leads to a log crossing over a broken log. I'm not sure how much longer that will survive.
Wildlife report: one vole, one pika, one coyote on the Chilliwack River valley road, several fish in the lakes. Remarkably few mosquitoes, but they were definitely present. I only got half-a-dozen bites in total.
Flower report: trillium is past it, wild ginger is at its peak (look underneath pairs of heart-shaped leaves for its brown flower), queen's cup is budding (some are out). Surprisingly little bunchberry.
Many thanks to Cara for organizing this hike through Wanderung.