posted Yellow Corydalis (Corydalis lutea ) is a short lived perennial wildflower which is hardy in USDA zones 5-8. Yellow Corydalis should be planted in full sun but will tolerate light shade. They prefer moist, well draining, slightly alkaline (pH 7.
'Rosea' (lutea) Arnoldia 23:88, 1963
Clethra
'Hummingbird' (alnifolia) HortScience 26(5) 475, 1991 ...
Corydalis lutea
Fumariaceae Family
Synonym: Pseudofumaria lutea
Hardy only to Zone 5, this fern-like plant will thrive and spread in shady sites that are moist but well-drained.
Corydalis lutea (Fumewort)
USDA Zones 4 - 9 - Bloom Span: 4 Months
Corydalis' ferny foliage and delicate flowers belie its fortitude.
Corydalis lutea is my favourite long blooming perennial and simply the longest blooming plant in my garden.
Dianthus can be very long blooming perennials if you pick new hybrids. Dianthus gratianopolitanus and D. deltoides are two of the best.
Gloriosa 'Lutea' --photo courtesy of Brent and Becky's Bulbs
Gloriosa 'Lutea' has solid yellow flowers. G. superba has orange flowers with yellow edges, while the blooms of G. superba 'Rothschildiana' are red with yellow edges.
(moss rose) `Sundial,' `Tropical' and `Passion Fruit' Swan River Daisy (Brachycome iberidifolia) Verbena `Peaches & Cream' Torenia -- wishbone flower Perennials for Edging -- Shade Astilbe `Sprite' Bergenia cordifolia `Redstart' Corydalis lutea ...
Also native to Arkansas waters, but not to be confused with the fragrant water lily is the yellow cow lily or spatterdock (Nuphar lutea). Spatterdock has a smaller yellow flower that is not at all showy.
By early May, the fritillaries are in bloom, both the tall, yellow-flowered 'Lutea' crown imperials (Fritillaria imperialis 'Lutea') and the diminutive snake's-heads (F. meleagris), with their checkered nodding bells. The ultra-hardy (to -40˚C) 'P.J.
Cordylis lutea. This plant blooms all summer and has pretty foliage.
Dicentra eximia. The 'King of Hearts' cultivar blooms all summer.
Dicentra spectablis. This is a bleeding heart plant with white blooms.
Hosta.
A favourite is one of the original species that grows in the limestone foothills of China called Paeonia lutea. It's the parent of many modern hybrids.
lutea and pink-flowered 'Rosea', C. platycarpa, C. sinensis
QUIRKS: Doesn't bloom every year; flowers in droughts
GOOD NEIGHBORS: Japanese maple, lacebark pine, redosier dogwood, pine, false cypress ...
Yellow autumn crocus or autumn daffodil (Sternbergia lutea) is less well-known than the previous bulbs mentioned. This bulb can be planted from September to November and yields bright yellow flowers about 6 inches tall only a few weeks after planting.
* Yellow pond lily (Nuphar lutea). Dig roots during dormant season in fall or early spring; scrub and add to soups and stews. Dry seeds in warm oven, and remove the kernels. Boil lightly, and serve like corn.
Medium-size trees, such as Washington hawthorn (Crataegus phaenopyrum) and yellowwood (Cladrastis lutea), which top out at about 40 feet, can be planted 15 to 20 feet from the house and 35 feet apart.
Colchicum is an autumn crocus, and there are daffodils (Sternbergia lutea) that bloom at the same time as colchicum and, like their spring-blooming cousins, are not appealing to garden pests. Hardy cyclamen is another late season bloomer.
Autumn crocus (Colchicum autumnale)
Saffron crocus (Colchicum sativus)
Autumn daffodil (Sternbergia lutea)
Cyclamen (Cyclamen hederifolium) ...
 See also: Flower, Plant, Water, Spring, Growing
  
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