Season of Bloom:
- EE - Extra Early
- E - Early
- EM - Early Midseason
- M - Midseason
- ML - Late Midseason
- L - Late
- VL - Very Late
- Re - Remontant, or Reblooms
Fragrance is lacking unless indicated as below:
- FR (FRAG) - Fragrant
- V.FR - Very Fragrant
Day-blooming unless indicated otherwise
- DIU - Day-Blooming
- NOC - Night-Blooming
- EXT - Extended Blooming, flowers remain open 16 hours or more
- EV - Evergreen (continuous growth)
- semi-ev - Semi-Evergreen, or intermediate between the two extremes
- DOR (de) - Dormant (deciduous), discontinues growth, or dormant in winter
- DIP - Diploid
- TET - Tetraploid
Diploid vs. Tetraploid:
Tetraploid daylilies are heralded by some growers as having a number of advantages over diploids. In the tetraploid:
Flowers tend to be larger.
Colours of the flower tend to be more intense.
Scapes tend to be sturdier and stronger.
Substance of both flower and foliage tend to be heavier.
Vegetative vigor in leaf, stem, and flower tend to be greater.
Breeding possibilities tend to be greater because of an increased number of chromosomes
- Diploid daylilies continue to charm growers with their exquisite flower form, grace, and colour.
- Good pink daylilies are still more prevalent in the diploid ranks.
- Spider and double daylilies are still more prevalent in the diploid ranks.
- Diploid daylilies are easier to cross than tetraploids.
- Many diploid daylilies have been converted to tetraploids, thus advancing the tetraploid lines.
- There are more diploids than tetraploids.