Corydalis lutea is my all all-time favorite perennial plant. I talk about it constantly to fellow gardeners.
It will start blooming in April and continue to flower into November if we don't get a hard freeze.
The irony of my life is that I'm spending more time writing and talking than actually gardening. I need carefree plants like corydalis lutea to make the garden look respectable all season.
It's about 18 inches tall with gray, greenish foliage and luminescent yellow flowers. It will form a wonderful little colony from seed and the plants will sprout up in the most unlikely spots. It's never invasive as it can easily be potted up and shared with other lucky gardeners.
Corydalis lutea is also great for containers due to the long bloom time.
I recommend this plant to everyone who will listen and gift plants have become the basis of many friendships.
It's hard to find, but worth effort to get into the garden. Go to your local nursery and see if they carry it, if not ask them nicely if they would order it for you. Better yet find someone else who grows it and get some plants.
Right behind the corydalis is my favorite hosta, 'Paul's Glory.' Its colors change depending on how much sun the plant receives. The more sun it gets the more yellow the leaves turn. Google the plant and take a look. This one is tough and beautiful which is perfect for any garden.