Mine are up to 2 1/2 feet tall too and not blooming. Maybe there is too much nitrogen in my soil.

I don't have corydalis but several of my other spring blooming plants never bloomed this year including doronicum, Jack Frost brunnera and bergenia. I wonder if the buds were killed off by our particularly cold winter. The foliage on all look healthy and robust enough.

No problem with Corydalis lutea here.
Most of it gets pulled out.

As usual we just leave it in a few out-of-the-way places and that remainder gets pulled out later.

We too had a late spring and C. lutea likes moisture.

Have never seen it not flower.

Am assuming most, if not all, of our yearly C. lutea is from previous years' seeding.