Denomination: 'Hercules'
Botanical Name: Heuchera
Applicant/Holder: Future Plants Licentie B.V.
Turfspoor 53A
2165 AW
Breeder: Hubertus Gerardus Oudshoorn, Rijpwetering, Netherlands
Agent in Canada: Variety Rights Management
475 County Road 18
R.R. #2
Oxford Station, Ontario
K0G 1T0
Tel: 613-258-9015
Application Date: 2002-01-11
Application Number: 02-2966
Grant of Rights Date: 2008-04-24
Certificate Number: 3200
Grant of Rights Termination Date: 2026-04-24

Variety Description

Variety used for comparison: 'Monet'

Summary: Hercules' has a slightly longer leaf than 'Monet'. The leaf of 'Hercules' appears to be greener than 'Monet'. The variegation of the leaf in 'Hercules' is slightly more yellow than in 'Monet'.


PLANT: vegetatively propagated perennial, mounding growth habit, sparse degree of branching

STEM: whitish green, absent or very weak anthocyanin colouration, absent or very weak glaucosity, absent or very sparse pubescence, medium to thick, smooth shaped

LEAF: arranged whorled and basal, simple, reniform to rounded shape, obtuse apex, cordate base, crenate lobed margin, sparse pubescence on upper side, very sparse to sparse pubescence on lower side, absent or very weak glaucosity on upper side, medium green upper side, light green lower side, light yellow orange (RHS 11D) variegation present in a mottled or speckled pattern, petiole present, absent or very weak anthocyanin colouration on the petiole

INFLORESCENCE: flowers once early to mid season for a short to medium amount of time, panicle type, flowers positioned terminally, erect flower attitude
FLORET: small, dark red to red (RHS 53C/47B) primary colour, red pink (RHS 51C) secondary colour towards base

Origin & Breeding History: 'Hercules' was selected in Rijpwetering, The Netherlands in 1998 from a seed bed of hybrid Heuchera seedlings that were produced from various crosses of unidentified Heuchera seedling selections. Selection criteria included unique floral and foliage characteristics.

Tests & Trials: Trials were conducted during the summer of 2006, in Oxford Station, Ontario. Trials consisted of 10 plants of each variety individually grown in 15cm pots in a polyhouse. Plants were spaced 35cm apart. Observations and measurements were taken from 10 plants of each variety.

Comparison tables for 'Hercules' with reference variety 'Monet'

Leaf length (cm)

  'Hercules' 'Monet'
mean 6.97 6.29
std. deviation 0.51 0.49

Leaf variegation colour (RHS)

  'Hercules' 'Monet'
colour 11D 155C

Click on image for larger view
Heuchera: 'Hercules' (left) with reference variety 'Monet' (right)

Date modified: