Lilium lily

(lil' ee-um)

Common name: Garden Lily

Family: Liliaceae

Height x width: 2-6' x 6-12"

Growth rate: moderate to fast

Foliage: linear or lanceolate, whorled, horizontal or with recurved tips, parallel veins, petioles short or absent

Flowers: usually in terminal raceme, occasionally solitary, 4-12" wide, 6 tepals (petals and sepals); erect or cup-shaped, horizontal or funnel-shaped, pendulous or bell-shaped; white, yellow, orange, red or maroon; interior often spotted

Hardiness: hardy bulb, zones 3-9 (depending on species)

Soil: well-drained, fertile, mulch to keep soil cool

Light:sun, tolerates part shade

Pests and problems: bulb rot, botrytis blight and spots, viruses, aphids (none usually serious or widespread)

Landscape habit, uses: borders in mid to background or between other plants, cut flowers, containers

Other interest: native to northern temperature hemisphere; old Latin name from Greek leirion for lily.

Other culture: generally 5 types of lily bulbs depending on species:

1. concentric, growing point with overlapping scales

2. subrhizomatous, growing horizontally in one direction

3. rhizomatous, forming extensive mats

4. stoloniferous, developing new bulbs on horizontal stolons where they join (apices)

5. stoloniform, developing horizontal stems before shoots appear above ground

Basal-rooting bulbs can be planted near the surface; those rooting along the stem should be planted twice as deep as they are wide.

Avoid allowing bulbs to dry out before planting; prepare planting area prior.

Propagation: bulblets formed off mother bulb, bulbils formed in leaf axils of some asiatic species sown immediately in fall upon harvest, scales removed from mother bulb and planted, seeds which will take several years to flower

Species:

About 100 species and many cultivars in each; extensively bred genus. The origin or native provenance helps determine the appropriate ecological garden habitat.

European species (Eur.) and hybrids require rich soils with plenty of organic matter.

Asiatic species and hybrids which are stem rooting should be planted 8-10" deep to allow for this.

North American species (NAmer.) and hybrids often have stolons or rhizomes so prefer a well-drained soil with plenty of organic matter such as from peat moss, shredded leaves and similar.
 
Species native zone¹ color shape bloom height
amabile Asia 5 red, black spots nodding early-mid 2-3'
auratum Asia 6 white, yellow band bowl late 2-4
bolanderi NAmer. 5 red, dark spots trumpet mid 3-5
             
bulbiferum Eur. 5 red-orange cup early-mid 3-4
canadense NAmer. 4 golden nodding early 2-4
candidum Eur. 6 white trumpet early 2-4
chalcedonicum Eur. 5 scarlet nodding mid 2-4
columbianum NAmer. 5 yellow-red nodding mid 6-7
formosanum Asia 5 white trumpet late 4-6
grayi NAmer. 5 red, yellow inner cup mid 3-5
             
henryi Asia 5 light orange nodding mid-late 4-6
humboltii NAmer. 5 yellow-orange, spots nodding mid 5-7
kelloggii NAmer. 5 pink-white, spots nodding mid 1-4
maculatum Asia 4 orange upward early 2-3
maritimum NAmer. 4 red-orange, spots in nodding mid 1-2
martagon Eur. 4 purple-red nodding early-mid 3-4
monadelphum Eur. 5 yellow, lilac spots nodding early-mid 4-5
pardalinum NAmer. 5 orange-red, spots nodding mid 6-9
philadelphicum NAmer. 4 orange-red erect early-mid 2-4
pomponium Eur. 4 scarlet nodding mid 2-3
pumilum Asia 5 coral-red nodding early-mid 1-2
pyrenaicum Eur. 3 yellowish, red spots nodding mid 1-4
regale Asia 5 white trumpet mid-late 4-6
speciosum Asia 6 white, red spots nodding mid-late 4-5
superbum NAmer. 3 orange nodding mid-late 4-7
washingtonianum NAmer. 4 white, purple spots bowl mid 3-5

¹zone refers to USDA cold hardiness zone
 
 

Cultivars:

Most lilies planted in gardens are easily grown hybrids generally of three broad groups:

1. asiatic which are usually lower with clustered terminal upright flowers, leaves spaced around the stem rather thickly

2. oriental which are taller with often few to solitary larger flowers spaced near the top, with larger and thicker and fewer leaves

3. martagon which are in between in height (about 3' tall) and flowers are often on long stalks, hang down, and have quite recurved (curved back) petals; leaves are whorled

Asiatic and Martagon types tend to be more hardy. Several oriental types have a permeating scent. Species lilies are less popular and seen in commerce, have been mainly used for breeding hybrids, and are often quite particular in their cultural requirements.
 
 

The hundreds of hybrids have been classified officially by the North American Lily Council and Royal Horticulture Society into 7 classes based on species and growth habits:
 
Class rooting flowering
1. lancifolium types stem early-late summer
2. Turk's cap types stem mid summer
3. from European species base mid summer
4. from N. American species stem mid summer
5. from Easter and Formosa lilies stem mid summer
6. from several Asiatic species stem mid summer
7. from Japanese species stem mid-late summer

 

The following are only some of the more noteworthy and available hybrids.
 
Cultivar, series Class flowering color, other
'African Queen' 6 mid orange, trumpet shaped
'Ares' 3 mid bright red-orange
'Artemis' 3 mid pale pink to yellow orange
Backhouse hybrids 2 mid ivory, yellow, pink, burgundy
Bellingham hybrids 4 mid yellow-orange, red/brown spots
Bellmaid hybrids 4 mid yellow/orange tint, fading red
'Black Butterfly' 1 early-mid red-violet, pendent
'Black Dragon' 6 mid dark red, white inside, trumpet
'Bright Star' 6 mid ivory-orange, recurved
'Casablanca' 7 mid-late white, bowl shape
'Connecticut King' 1 early yellow, upward facing
'Citronella' 1 early-mid yellow, black spots, pendent
'Connecticut Yankee' 1 early-mid red-orange, pendent
'Corsage' 1 early-mid pink, purple spots, yellow outside
'Cote d'Azur' 1 early pink, upward facing
'Empress of Japan' 7 mid-late white, yellow bands, purple spots, bowl
'Enchantment' 1 early red, upward facing
Fiesta hybrids 1 early-mid yellow to red, pendent
'Fire King' 1 early-mid red-orange, purple spots
'First Love' 6 mid yellow, pink edge, green throat, bowl
'Formobel' 5 mid white, yellow throat
'Formolongi' 5 mid white
'Golden Showers' 6 mid brown, yellow inside, flat
'Golden Splendor' 6 mid yellow, purple stripes, trumpet
'Golden Sunburst' 6 mid yellow, outer green veins, recurved
'Green Magic' 7 mid-late white, trumpet shaped
Harlequin hybrids 1 early-mid salmon shades, pendent
'Heart's Desire' 6 mid yellow-white, bowl shaped
'Imperial Pink' 7 mid-late pink, flat
'Imperial Silver' 7 mid-late white, purple spots, flat
'Jamboree' 7 mid-late deep red, spotted, white edge, recurved
'Journey's End' 7 mid-late deep red, edged white, recurved
'Marhan' 2 mid orange/red spots, yellow/purple spots
'Mont Blanc' 1 early white, upward facing
'Pink Perfection' 6 mid purplish pink, trumpet
'Pink Solace' 7 mid-late pale pink ages red, green inner, recurved
'Prelude' 3 mid red orange, darker tips
'Sterling Star' 1 early-mid cream, brown spots
'Summer Song' 6 mid yellow, flat
'White Henryi' 6 mid white-orange, recurved
       


©Authored by Dr. Leonard Perry, Professor, University of Vermont as part of PSS123 course.

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