Daylily 'Rock Solid'


Family: Hemerocallidaceae (hem-er-oh-kal-id-AY-see-ee) (Info)
Genus: Hemerocallis (hem-er-oh-KAL-iss) (Info)
Cultivar: Rock Solid
Hybridized by Stamile
Registered or introduced: 2002
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24-36 in. (60-90 cm)


24-36 in. (60-90 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

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:

Full Sun

Sun to Partial Shade

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:


Propagation Methods:

By dividing the rootball

Bloom Time:

Early midseason (EM)

Reblooming (Re)

Flower Size:

Large (more than 4.5" diameter)

Blooming Habit:

Diurnal (diu.)

Flower Type:


Bloom Color:




Color Patterns:



Flower Fragrance:

Very Fragrant

Foliage Habit:

Dormant (dor.)



Awards (if applicable):

Award of Merit (or runner-up)

Honorable Mention

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


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

Maysville, Missouri

Cut Bank, Montana

Elizabeth City, North Carolina

Rumford, Rhode Island

Shoreline, Washington

Weston, West Virginia

Tomah, Wisconsin

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Gardeners' Notes:


On Jul 5, 2012, susansconi from Rumford, RI (Zone 5b) wrote:

It's amazing how daylilies can look different from garden to garden, with changes in soils & temps. I was worried about getting Rock Solid because I was unsure of the 'cream' color(I've bought a couple 'creams' that actually turned out to be yellow & peach). I was happy to find this bloom to be a beautiful, creamy, pale pink in my garden. It looks great with the other purples I have near it. The pale pink with the merlot/black-purple eye & edge is a very pretty contrast in the garden. Very eye catching. Also, about performance...this one's a power house!!! Blooms forever and consistently- I'm very pleased with this one!


On Oct 8, 2006, Calif_Sue from Northern California
United States (Zone 9a) wrote:

Hybridizer notes:
ROCK SOLID (Stamile,P) TET (Inner Destiny x Francois Verhaert) 27 EMRe. vfr. early morning opener, Dor. 4bloom, 6-way branching. (4 + terminal y) 30-35 buds.
This gorgeous orchid cream with a black violet eye and edge is a dormant. It is always interesting how two evergreen parents can pass along recessive genes for dormancy. ROCK SOLID also has exquisite plant habit with excellent branching, bud count, branch and bud placement and scape density. An all around great daylily. Easily fertile both ways.