Imagine a perennial that has no pest problems, and blooms from spring until frost, with fabulous yellow flowers. Pseudofumaria lutea (formerly called Corydalis lutea) is that plant. Because of its long bloom time it is one of my top perennials.
The plant always looks good with bluish green fern-like leaves resembling a bleeding heart – to which it is related. In zone 5, it starts to flower in May and stops after a hard frost. It requires no maintenance all summer and even deadheading is not required.
Some sources suggest that the plant is a short lived perennial but in my zone 5 garden it is long lived. It does seed around a bit, but seedlings are easily pulled out. In hot climates it may not flower all summer, and it might even go dormant in mid-summer. It might also be shorter lived in hot climates.
It is commonly called yellow fumitory or yellow corydalis. If yellow is not your thing, a very similar species, Pseudofumaria ochroleuca (formerly called Corydalis ochroleuca) ,blooms off-white with a small yellow patch.
Life Cycle: perennial
Height: 45 cm (1.5 ft)
Bloom Time: spring to late fall
Natural Range: southern Alps of Europe
Habitat: wooded areas
Cultivation of Pseudofumaria lutea:
Light: part to full shade
Soil: well drained
Water: regular moisture, but not wet in winter
USDA Hardiness Zone: 4-8
Propagation: seed, division
The following video showcases all of the favorite plants for 2015:
If you can’t see the above video, use this link instead: https://youtu.be/GbLlQgn0vLs