Orchid, Lady Slipper, Cypripedium Ulla Silkens
Cypripedium

Family: Orchidaceae (or-kid-AY-see-ee) (Info)
Genus: Cypripedium (sip-rih-PEE-dee-um) (Info)
Grex name:Ulla Silkens
Additional cultivar information:(Cyp. flavum X Cyp.reginae)
Hybridized by Petersen
Registered or introduced: 1996

Category:

Perennials

Height:

6-12 in. (15-30 cm)

12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

Spacing:

18-24 in. (45-60 cm)

Hardiness:

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Light Shade

Danger:

Unknown - Tell us

Bloom Color:

Pink

White/Near White

Bloom Time:

Late Spring/Early Summer

Foliage:

Herbaceous

Leathery-Textured

Other details:

Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Regional

This plant has been said to grow in the following regions:

Kenosha, Wisconsin

Gardeners' Notes:

No details have been posted.