BACKGROUND OF THE INVENTION
The present invention, Hosta ‘Forest Fire’,
relates to a new and distinct cultivar of Hosta,
botanically known as a Hosta hybrida, hereinafter
referred to as 'Forest Fire'.
The inventors discovered the new cultivar, 'Forest Fire’, in 2000 in a cultivated growing area of a nursery
in Tennessee. 'Forest Fire' originated as a naturally
occurring whole plant mutation of Hosta ‘Sagae' (unpatented).
Asexual reproduction of the new cultivar was first
accomplished under the direction of the inventors
utilizing in vitro propagation in The Netherlands
in 2003. Asexual reproduction of the new cultivar by
division and tissue culture has shown that the unique
features of 'Forest Fire' are stable and reproduced true
to type in successive generations.
BRIEF SUMMARY OF THE INVENTION
The following traits have been repeatedly observed in
trials in Michigan for a period of five years and
represent the characteristics of the new cultivar. These
attributes in combination distinguish 'Forest Fire' as a
new and unique cultivar of Hosta.
1. The foliage of 'Forest Fire' is variegated with
glaucous green centers and yellow-green margins that
turn creamy white with maturity. The margins of 'Forest Fire' comprise about one fourth of the leaf area. New
leaves of 'Forest Fire' emerge throughout the growing
season with yellow-green margins combining with the
mature foliage to give the overall plant a two-toned
2. The leaves of 'Forest Fire' are cordate in shape with
a variegation pattern in which the centers are feathered
into the margin. An intermediate colored area exists
that is also feathered into the margin.
3. 'Forest Fire' reaches a height of about 50 cm (19.6 in.),
exclusive of flower scapes, and a spread of about 50 cm (19.6 in.)
in four years.
4. 'Forest Fire' blooms in mid summer with pale lavender
flowers on scapes that arise above the foliage.
In comparison to the parent plant, 'Sagae’, 'Forest Fire' has leaves with wider margins, leaves that are
more cordate in shape, and the plant size of 'Forest Fire' is smaller in height and spread.
The closest comparison plant is Hosta ‘Liberty' (U.S. Plant Pat. No. 12,531). In comparison, 'Forest Fire' has margins that are not as wide as 'Liberty' and
the plant size of 'Forest Fire' is smaller in height and
spread. The margins of 'Forest Fire' comprise about one
fourth of the leaf whereas the margins of 'Liberty' comprise about one third of the leaf area.
BRIEF DESCRIPTION OF THE DRAWING
The accompanying colored photographs illustrate the
overall appearance and distinct characteristics of the
new Hosta. The photographs were taken in June of
mature plants of 'Forest Fire' and 'Sagae' as grown
outdoors in light shade for a period of five years.
FIG. 1 provides an overall view of the foliage and plant
habit of the new cultivar, 'Forest Fire'.
FIG. 2 provides a close-up view of the foliage of 'Forest Fire' and shows both newly emerged leaves and
FIG. 3 provides a comparison between a leaf of 'Sagae' (shown on left) and 'Forest Fire' (shown on right).
The colors in the photographs are as close as possible
with the photographic and printing technology utilized
and combined with the color values cited in the DETAILED BOTANICAL DESCRIPTION accurately describe the colors of
the new Hosta.
DETAILED BOTANICAL DESCRIPTION OF THE PLANT
The following is a detailed description of five year-old
plants of the new cultivar as grown outdoors in Paw Paw,
Mich. The phenotype of the new cultivar may vary with
variations in environmental, climatic, and cultural
conditions, as it has not been tested under all possible
environmental conditions. The color determination is in
accordance with the 2001 The
Royal Horticultural Society Colour Chart , London, England, except
where general color terms of ordinary dictionary
significance are used.
+ Botanical Classification: 'Forest Fire' is a cultivar of
+ Parentage: Naturally occurring sport of Hosta 'Sagae' (not patented).
+ General description:
Blooming period: About
3 weeks in mid summer in Michigan.
Plant habit: Herbaceous
perennial, clump-forming, upright and mounded foliage on
a medium-large sized plant.
Height and spread: Reaches
about 50 cm (19.6 in.) in height (excluding flower scapes) and
about 50 cm (19.6 in.) in width.
shade to medium shade, moist soils of moderate
Diseases and pests: No
susceptibility or resistance to diseases or pests has
been observed for 'Forest Fire'.
Root description: Freely
Propagation: In vitro
propagation is the preferred method utilizing typical
methods for Hosta, division is also possible.
Growth rate: Moderately
+ Foliage description:
Leaf shape: Broadly
ovate when young, cordate when mature.
Leaf division: Simple.
Leaf base: Cordate.
Leaf apex: Cuspidate.
Leaf venation: About
11 pairs of veins, campylodrome pattern, impressed on
upper surface and raised on lower surface, color matches
Leaf margins: Entire,
Leaf attachment: Petiolate.
Leaf arrangement: Basal,
radiate spirally from base.
Leaf surface: Upper
slightly glaucous, lower glaucous.
Leaf substance: Average
to above average when mature.
Leaf orientation: Held
almost upright in relation to petioles.
Leaf variegation pattern: Margins
comprise about one fourth of the leaf area, ranging from
about 0.5 to 2.0 cm (0.8 in.) on mature leaves, the centers are
feathered into margins and an intermediate area exists
between centers and margins, also in a feathered
pattern. The new leaves emerging in summer with margins
that are yellow-green, which combine with the mature
leaves with creamy margins for a two-toned effect.
Leaf color: Spring
foliage, upper surface; centers 138A to 138B, margins
151B, intermediate area between the margins and centers
146C. Spring foliage, lower surface; centers 191A to
191B, margins 151C, intermediate area 191C. Mature
summer foliage, upper surface; centers 137B, margins 8C
to 8D, intermediate area 191C. Mature summer foliage,
lower surface; centers 191A to 191B, margins 8C to 8D,
intermediate area 191C and 144B. New summer foliage,
upper surface; centers 137B, margins N144A to N144C,
intermediate area 138B and 138C. New summer foliage,
lower surface; centers 191B, margins 145A, intermediate
area not distinct.
Leaf size: Mature
leaves average About 21 cm (8.3 in.) in length, about 21 cm (8.3 in.) in
Leaf quantity: About
5 to 6 per shoot (eye).
Petiole size: About
30 cm (11.8 in.) in length, about 1.0 cm (0.4 in.) in width.
Petiole color: Mature
leaves (inner and outer surface); 144A to 144B, narrow
margins of N144D.
Petiole surface: Slightly
glaucous on inner surface, glabrous on outer surface.
Petiole shape: Sulcate.
+ Flower scape description:
Scape shape: Round,
Scape number: One
per mature eye under normal growing conditions.
Scape posture: Held
upright to about 70° from horizontal.
Scape size: About
80 cm in length, about 1.0 cm (0.4 in.) in width.
Scape color: 137B.
Scape surface: Glaucous.
Leaf bracts: About
3 per scape, centers are 137A in color, margins are 4B
in color, ovate in shape, glaucous, average of 2.0 cm (0.8 in.) in
length and 7 mm in width.
+ Flower description:
Inflorescence type: Terminal
racemes of funnel-shaped flowers on elongated scapes.
Lastingness of Inflorescence: About
3 weeks from first opening bloom to fading of last
opening bloom, individual blooms last about one day.
Flower shape: Funnel-shaped.
Flower number: About
40 per scape.
Flower fragrance: None.
Flower bud shape: Spathulate.
Flower bud size: Up
to about 4.0 cm (1.6 in.) in length and 1.7 cm (0.7 in.) in diameter.
Flower bud color: 85C
with markings of 85D.
Flower size: About 5 cm (2 in.) in length and about 2.5 cm (1.0 in.) in diameter.
Flower color: 85D.
1.5 cm (0.6 in.) in length, 2 mm in diameter, 91D in color.
Perianth features: Comprised
of 6 tepals, 3 interior and 3 exterior, overlapping in
expanded region and fused in tube region.
Tepal shape: Oblanceolate.
Tepal size: About
5.5 cm (2.1 in.) in length, up to 1.5 cm (0.6 in.) in width.
Tepal color: Outer
and inner surface 85D with stripe of 155C on inner
Tepal texture: Glabrous.
Floral bracts: 1
per flower, ovate in shape, glaucous surface, 157C in
color, about 1.0 cm (0.4 in.) in length and 8 mm in width.
Pistil, about 6.0 cm (2.4 in.) in length, 155B in color, stigma is
3-lobed and 155B in color, ovary is superior, composed
of 3 locules, 145C in color.
stamens, 8D in color, 5 to 6.0 cm (2.4 in.) in length, 1 mm in
width, anthers are 3 mm in length, 1 mm in width,
attachment is versatile, 202A in color, dehiscence is
longitudinal, pollen is abundant and 8D in color.
3-chambered, about 6.0 cm (2.4 in.) in length, 6 mm in width, 137C
35 seeds per capsule, about 3 mm in length and 1.5 mm in
width, 200A in color.