Hellebore, Lenten Rose 'Mellow Yellow Strain'

Helleborus x hybridus

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Helleborus (hel-eh-BORE-us) (Info)
Species: x hybridus (hy-BRID-us) (Info)
Cultivar: Mellow Yellow Strain
Additional cultivar information:(Mello Yellow Strain)



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


12-18 in. (30-45 cm)


18-24 in. (45-60 cm)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

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)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Partial to Full Shade


Parts of plant are poisonous if ingested

Bloom Color:


Bright Yellow

Bloom Time:

Late Winter/Early Spring

Mid Spring



Other details:

Unknown - Tell us

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)

Allow cut surface to callous over before planting

Seed Collecting:

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


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

Bessemer, Alabama

Eureka, California

San Francisco, California

San Rafael, California

Storrs Mansfield, Connecticut

Emporia, Kansas

Cincinnati, Ohio

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Gardeners' Notes:


On Jan 30, 2012, aulani61 from Emporia, KS wrote:

This plant has been very slow growing for me, and in the first year produced very few new leaves and only one bloom. It is in a west location next to the house, and I give it a bit of compost every fall. It is mulched with bark mulch. Now that it has been in that spot for several years, it is well established and has produced many blooms each year. I have not propagated other plants from it. I plan to leave it there, giving it a bit of compost each fall and enjoying the lovely mauve colored blooms early each spring. I think I may give it a bit of all purpose fertilizer this year just to see what she does.


On Jan 30, 2012, mahniah from STORRS MANSFIELD, CT wrote:

Last winter, when the snow finally melted, the lenten rose was flowering. It had actually bloomed under the snow.