Table 1.

List of the Heuchera cultivars used in this study.

Cultivars	Genus	Height  × Spread	Foliage description
Blonde	Heuchera	12 cm × 20 cm	Caramel-colored leaves flushed copper on the upper surface and with lobed edges
Electra	Heuchera	25 cm × 30 cm	Large lobed leaves, bright yellow with blood-red veins, chartreuse in summer, tan in winter
Electric Lime	Heuchera	45 cm × 40 cm	Large lobed lime-tinted leaves with red veins in cooler temperatures
Forever Red	Heuchera	20 cm × 35 cm	Cut softly ruffled leaves with red veins
Lime Marmalade	Heuchera	25 cm × 60 cm	Heavily ruffled and frilled lime green leaves
Lime Ricky	Heuchera	20 cm × 45 cm	Lobed, rounded leaves with ruffled edges, lime-green to chartreuse color
Paris	Heuchera	45 cm × 40 cm	Lobed leaves, mint-green, overlaid with silver markings
Plum pudding	Heuchera	20 cm × 40 cm	Glossy, ruffled plum purple leaves with deep purple undersides and darker purple veins
Rio	Heuchera	25 cm × 50 cm	Peach-amber Leaves with pink veins
Shanghai	Heuchera	45 cm × 40 cm	Silvery-grey, Reddish-purple in All seasons;
Sweet Tart	Heuchera	20 cm × 20 cm	Very tangy, lime-colored foliage in a tight mound
Sweet Tea	Heucherella	50 cm × 60 cm	Maple-like, palmately lobed apricot orange leaves with contrasting burgundy veins
Tapestry	Heucherella	20 cm × 40 cm	Dark-centered blee-green leaves with purple veins