Daylily Varieties: Hemerocallis - Diploid, Spider...
There are thousands of varieties of Daylilies and seemingly even more jargon used to describe them. In fact, they are classified according to around six sets of characteristics. These are flower form, color, pattern, ploidy, flowering habit and flowering season.
Sets of Chromosones
Diploid Daylilies are more common and easier to grow than Tetraploid. Pink, spider and double dayliles are most likely to be diploid.
Tetraploid Daylilies have been bred to outperform Diploid Daylilies in many ways: flowers are larger; colors are more intense; scapes stronger; growth and flowering are more vigorous.
When do Flowers Open
Hemerocallis means day beauty, and that's how long each Daylily flower lasts, but they open at different times of the day.
Diurnal Daylilies open during the day
Nocturnal Daylilies late afternoon and close in the morning
Extended Daylilies open for at least 16 hours. In addition, they may be either Diurnal or Nocturnal
Which Daylilies Flowers When
One Daylily or another is in flower for about eight or nine months of the year, starting in early Spring. What follows is an overview of the Daylily flowering periods: Each lasts about 30 days.
Extra Early Dayliles flower first - March in the southern US; May or June in the North or the UK.
Early Daylilies are next, flowering from around May in the South, June or July in the North
Early Midseason - April in the South to June in the north
Midseason - May in the South to July in the north
Late Midseason - June in the South to August in the North
Late - June/July in the South to August/September in the North
Very Late - Late August in the South to late September/October in the North.
Rebloomer - Blooms more than once. Sometimes, a spring flush is followed by another in the fall. Sometimes flowers appear for months on end
Bicolor, bitone, blended, dotted, dusted, edged, eyed and polychrome
Bicolor: petals are different colors from sepals
Bitone: petals and sepals are a less or more intense shade of the same color
Blend: two or more colors blended
Dotted: clusters of spots
Dusted: Color is faded
Diamond Dusted: sparkling flowers
Edged or Picoteed: flower edges are darker or lighter
Midrib: different colored flower veins
Polychrome: three of more colors
Self: flower is all one color not including the stamens and throat
Tipped: tips are different color or shade from the rest of the flower
Circular, Double, Flaring, Recurved, Ruffled, Spider, Star, Triangular and Trumpet Daylilies
Circular: overflowing, overlapping segments make flowers appear round
Double: more than six segments
Flared: petals arch over backwards
Flat: flowers don't arch
Recurved: flared but edges roll back
Ruffled: frilled edges
Spider: long narrow spidery petals
Star: flowers resemble three-point or six-point star
Triangular: front view reveals a triangle
Trumpet: Petals are more upright than flared, looking like a lily from the side
Miniature, Small and Large Flowered Daylilies
Miniature flowers are less than 3" (7.5cm) across
Small flowers are 3" (7.5cm) to 4" (10cm) across
Large flowers are 4" (10cm) across and larger
Low, Medium and Tall Daylilies
Low: scapes are 6" (15cm) to 24" (60cm) tall
Medium: scapes are 24" (60cm) to 36" (90cm)
Tall: scapes are 36" (90cm) or taller
Other Daylily Terms
The leafless flower stalk. From it grow flower-bearing branches, usually two more.
Each Daylily fan has a crown, a scape with branches and leaves. A group of fans is a clump.
Evergreen, Semi-Evergreen and Dormant
Dormant: Leaves die back in winter.
Semi-evergreen: Some leaves remain throughout the winter, depending on the climate.
Evergreen: Leaves grow all winter in mild climates, but may freeze in cold climates.