Coleus plant named ‘UF15-20-6’

Abstract

UF15-20-6 is a new Coleus plant with novel characteristics that include excellent heat tolerance, distinct, highly lobed leaves that display a unique and consistent green, pink, and white coloration pattern, and a vigorous, compact upright growth habit and excellent lateral branching. UF15-20-6 exhibits superior foliage color stability when grown under all conditions, including both sun and shade conditions. Further, UF15-20-6 exhibits long-season performance until late fall.

Claims

1. A new and distinct Plectranthus scutellarioides plant called UF15-20-6 as shown and described herein.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) This new Coleus plant is illustrated by the accompanying photographs, which show the plant's form and foliage. The colors shown are as true as can be reasonably obtained by conventional photographic procedures. The photographs in FIGS. 2 and 3 are of plants that were grown from unrooted cuttings in a poly-covered plastic greenhouse in Gainesville, Fla. for 11 weeks from November, 2017 through February, 2018.

(2) FIG. 1Shows the pedigree of UF15-20-6.

(3) FIG. 2Shows the growth habit, form, and foliage of UF15-20-6.

(4) FIG. 3Shows a close-up of the foliage of UF15-20-6.

DETAILED BOTANICAL DESCRIPTION

(5) The following detailed description sets forth the distinctive characteristics of UF15-20-6. The detailed description was obtained using 10-week-old plants grown from unrooted cuttings during November, 2017 through February, 2018 in a poly-covered plastic greenhouse in Gainesville, Fla. The plants were propagated in mist for 10 days after cuttings were stuck, and then they were grown in 1-gallon pots for approximately 9 weeks. Color references are to The R.H.S. Colour Chart of The Royal Horticultural Society of London (R.H.S.), 2007 5th Edition. Classification: Family.Lamiaceae. Botanical.Plectranthus scutellarioides. Common name.Coleus. Cultivar name.UF15-20-6. Plant description: Form.Spreading. Habit.Upright. Height (from top of soil).30-35 cm. Width (horizontal plant diameter).50-55 cm. Propagation: Type cuttings.Vegetative meristems having at least 1 node. Time to initiate roots.3-4 days. Time to produce a rooted cutting.7-10 days. Root habit.Fibrous. Root description.Callus forms in 2-3 days; roots initiate in 3-4 days; and roots become highly branched in 7-10 days. Branches: Quantity per plant.8. Branch color.Red, RHS N186C. Texture.Smooth. Pubescence.Not present. Stem description.Square-shaped and 0.5-0.6 cm in diameter at the soil line. Branch diameter.0.4-0.5 cm at the base of a 27 cm long branch. Branch length.25-29 cm. Internode length.4-5 cm. Anthocyanin.Red, RHS N186C. Leaves: Quantity of leaves per branch.12-14. Arrangement: Opposite. Fragrance.Not fragrant. Shape.Ovate. Length.10-12 cm. Width.8-9 cm. Apex.Broadly acuminate. Base.Sagitate. Margin.Lobed. Leaf texture (both surfaces).Smooth. Pubescence color (both surfaces).Not present. Venation color.Upper surface: Center=Purplish red, RHS 61A. Lower surface: Purplish red, RHS 186B. Venation pattern.Upper surface: Reticulate. Lower surface: Reticulate. Color.Immature leaf: Upper surface: Center=Purplish red, RHS 64A; Margin=Green, RHS N138A. Lower surface: Center=Purplish red, RHS 64A; Margin=Purple, RHS N77A. Color.Mature leaf: Upper surface: Center=Purplish red, RHS 63A; Mid-Center=Yellow, RHS 10B; Margin=Green, RHS N137B. Lower surface: Center=Purplish red, RHS 186B; Margin=Purple, RHS N77A. Petiole length.3.5-4.0 cm. Petiole diameter.0.2-0.3 cm. Petiole color.Purplish red, RHS 61A. Petiole texture.Smooth, no pubescence. Flowers and seeds: Not observed. Fruit/seed set: Not observed. Disease and insect resistance: Disease and insect resistance is typical of the species. The most common insect pests observed on this plant in Gainesville, Fla. have been long-tailed or citrus mealybugs (Pseudococcus sp.), which occur on older stock plant material held in the greenhouse for over 3-4 months. Impatiens Necrotic Spot Virus (Bunyaviridae) has also been observed in plants confined in greenhouses with mixed crops (peppers) infected with Western flower thrips (Frankliniella occidentalis). The most common pathogen of this species in the U.S. is downy mildew (Perononspora lamii), and this pathogen has been observed in stock materials grown closely together during the cooler growing seasons.