BACKGROUND AND ORIGIN OF THE PLANT
The present invention relates to a new and distinct Hosta plant, Hosta Coast to Coast' hereinafter also referred to as the new plant or just
the cultivar name, 'Coast to Coast'. Hosta
Coast to Coast' was hybridized by the inventor, Olga Petryszyn,
in the June of 1998 in a trial garden at a personal Hosta garden in Chesterton, Ind., USA. The new plant
originated from a breeding program conducted by the
inventor with the specific intention to improve the
garden worthiness and was later the subject of further
trials in the inventor's garden in Chesterton, Ind. The
female or seed parent was Hosta Manhattan' (not
patented) and the male or pollen) parent was Hosta
Golden Gate' (not patented). The new plant has been
asexually propagated by division at the same garden in
Chesterton, Ind. and also by careful whole shoot tip
tissue culture propagation since 2011 with all resultant
asexually propagated plants having retained all the same
unique traits as the original plant. Hosta Coast to Coast' is stable and reproduces true to type in
successive generations of asexual reproduction.
There are nearly 5,000 registered Hostas with The American Hosta Society, which is the
International Cultivar Registration Authority for the
genus Hosta. The most similar Hosta
cultivars known to the applicant are the female and male
parents. Other similar cultivars include Hosta 'Zounds' (not patented). Compared to 'Zounds' the
instant cultivar has larger, more elongated and pointed
leaves with a more glaucous underside, plant habit is
more upright and larger, and the flower is more light
lavender compared to the near-white flower of 'Zounds'. 'Coast to Coast' differs from the female patent, Hosta Manhattan, in that the new plant has more
gold yellow foliage, the leaves are larger and the leaf
margins are less undulated and flowers that are lavender
compared to the purple of 'Manhattan'. In comparison to
the male parent, Hosta Golden Gate, the new
plant has more upright habit, heavier substance, lighter
gold coloring and more rugose foliage with deeper
pigmented flowers.
Hosta 'Coast to Coast' differs from all other Hostas
known to the applicant, by the combination of the
following traits:
o
1. Large, long, golden-yellow leaf blades with acute
apexes, cordate bases and rugose upper surface;
o
2. Medium lavender buds opening to large lavender
flowers beginning in early July in northern Indiana and
effective for 3 weeks;
o
3. Numerous lavender flowers held close together and
subtended by large lavender-pigmented bracts; and
o
4. Large upright habit.
BRIEF DESCRIPTION OF THE DRAWINGS
The photograph of the new plant demonstrates the overall
appearance of the plant, including the unique traits.
The colors are as accurate as reasonably possible with
color reproductions. Ambient light spectrum,
temperature, source and direction may cause the
appearance of minor variation in color.
The drawing shows a ten-year old plant in peak flower in
a shaded landscape in early summer at a trial garden in
Chesterton, Ind.
DETAILED BOTANICAL DESCRIPTION
The following descriptions and color references are
based on the 2001 edition of The Royal Horticultural Society Colour Chart except where common dictionary
terms are used. The new plant, Hosta Coast to Coast, has not been observed under all possible
environments. The phenotype may vary slightly with
different environmental conditions, such as temperature,
light, fertility, moisture and maturity levels, but
without any change in the genotype. The following
observations and size descriptions are of a ten-year old
plant in a partially-shaded trial garden in Chesterton,
Ind. with and supplemental water and fertilizer.
+ Botanical Classification: Hosta Χ
hybrid.
+ Parentage: Female (seed) parent is Hosta 'Manhattan; male (pollen) parent is Hosta 'Golden Gate'.
+ Propagation: Division of the rhizome and sterile plant
tissue culture.
§
Time to initiate roots from tissue culture: About two to
three weeks.
§
Growth rate: Moderate to rapid.
§
Crop time: About 10 weeks to finish during the summer in
a one-liter container from rooted tissue culture
plantlet.
§
Rooting habit: Fleshy, slightly branching.
§
Root color: Nearest RHS 159C depending on soil type.
+ Plant shape and habit: : Hardy herbaceous perennial with
basal rosette of leaves emerging from rhizomes producing
a radially symmetrical mound of mostly upright leaves
becoming slightly rounded by late summer.
§
Plant size: Foliage height about 77 cm (2.8 in.) tall from soil
line to the top of the leaves and about 125 cm (10 in.) wide at
the widest point about 45 cm (17.7 in.) above soil line.
+ Foliage description: Entire, glabrous, slightly glaucous
above becoming matte by mid-season, glaucous below and
maintaining for the duration of the season.
§
Leaf blade: Blade margin sinuate; shape cordate, with
broadly acute leaf apex and cordate auriculate base with
overlapping lobes; proximal half of blade cupped or
slightly folded to the center; average width to length
ratio about 1: 1.3; largest leaves about 35.0 cm (1.9 in.) long and
26.5 cm (2.6 in.) wide; average about 33.0 cm long and 25.0 cm (1.9 in.)
wide.
§
Blade color: Adaxial (top) more yellow than RHS 145A,
and lighter and more green than RHS 151A in regions with
plenty of sunlight; in puckers and folds of leaf blade
more yellow than RHS 137D; mid-season abaxial (bottom)
between RHS 139C and RHS 138C.
§
Veins: 13 to 14 pairs of major parallel veins; impressed
adaxial side; ridged abaxial side; color same as
surrounding top and bottom leaf surfaces.
§
Petioles: Glabrous, entire margins, slightly glaucous on
both adaxial and abaxial surfaces; conduplicate with
margins curved toward center axis; about 1.4 cm (0.6 in.) wide and
30.5 cm (12 in.) long and about 7.0 mm deep.
§
Petiole color: Adaxial and abaxial margins lighter and
more yellow than RHS 146D more green and more yellow
than RHS 147D.
FLOWER DESCRIPTION
§
Flowers: Funnelform; single, perfect with two sets of
three tepals; 42 to 54 per scape; tightly arranged with
about 4 to 5 flowers per 1.0 cm (0.4 in.) centimeter of scape in
some areas and spaced 2.5 cm (1.0 in.) apart in other areas,
larger spacing usually only in lower portion of scape;
normally each flower subtended by a single bract; first
two to three flowers at or below foliage level; flowers
about 5.5 cm (2.1 in.) wide and 7.0 cm (2.8 in.) long, (distal flowers
smaller); remain open for a normal period, usually one
to two days on plant or as cut stem; flower attitude
horizontal to slightly drooping; flowers remain
effective from early July into late-July for
approximately three weeks in Chesterton, Ind.; no
detectable fragrance.
§
Buds one to two days prior to opening: Oblate spheroid
in outline with bluntly acute apex and basal two-fifths
cylindrical; about 5.0 cm (1.9 in.) long; about 1.7 cm (0.7 in.) in diameter
at widest point with basal two-fifths narrowing to about
4.0 mm diameter; distal buds smaller.
§
Bud color: One day from opening light lavender between
RHS 85D and RHS 76D; younger buds five days from opening
nearest RHS 85C.
§
Tepal: Glabrous; acute apex; margins entire; lobes
elliptical with acute apex, approximately 5.5 cm (2.1 in.) long
and 1.5 cm (0.6 in.) wide at widest point and fused in basal
two-fifths; two identically sized and shaped sets of
three fused in the basal one-half; inner set with
adaxial margin about 3.0 mm wide of color near white,
whiter than RHS 155D or RHS N155D and an outer clear
margin of about 1.0 mm wide in the apical about 1.2 cm (0.5 in.) ;
inner set adaxial center about 8.0 mm with color nearest
RHS 85C; outer set adaxial without distinct margin,
color nearest RHS 85C across entire width; abaxial color
of both sets between RHS 85D and RHS 91D; adaxial veins
nearest RHS 85B and abaxial nearest RHS 91D; abaxial
outer corolla tube nearest RHS 85C, adaxial corolla tube
whiter than RHS 155D.
§
Pedicel: Approximately 8.0 mm long, 2.0 mm wide.
§
Pedicel color: Nearest RHS 137D with tinting of nearest
RHS 79D.
§
Peduncle: Usually one per division, erect to about 1.2
mm diameter at base, average 92.0 cm (0.8 in.) tall; extending
above foliage.
§
Peduncle color: Nearest RHS 147B developing tinting of
RHS N186C in the upper regions where exposed to more
light.
§
Gynoecium: Tri-carpeled.
§
Style: Single,
about 6.5 cm (2.6 in.) long, 1 mm diameter, curled upward at
distal 1.0 cm (0.4 in.) ; color lighter than RHS 155D.
§
Stigma: 1
mm to 2 mm in diameter; color lighter than RHS 155D.
§
Ovary: Oval,
about 5.5 mm long and 3.0 mm diameter; color between RHS
145A and RHS 145B.
§
Androecium: Six.
§
Filaments: Six,
about 1.0 mm in diameter and 6.0 cm (2.4 in.) long, curving upward
the last 1.0 cm (0.4 in.) ; color lighter than RHS 155D.
§
Anthers: Oblong;
dorsifixed, longitudinal; about 6.0 mm long and 2.0 mm
wide, closest to RHS N187B.
§
Pollen: Elliptical,
less than 0.1 mm long; color nearest RHS 15A.
§
Bracts: Usually one or sometimes two before first flower
then subtending normally one or rarely more flowers,
glabrous, slightly glaucous adaxial and abaxial; entire
margin, lanceolate, sessile, truncate, partly clasping,
widest at base and tapering to acute apex; protruding
upward and away from scape at about 75 degree angle from
vertical and increasing to nearly 90 degrees in the last
⅓ of scape; lowest up to 5.0 cm (1.9 in.) long and 1.5 cm (0.6 in.) wide
before first flower, progressively decreasing in both
length and width distally.
§
Bract color: Abaxial and adaxial center portion nearest
RHS 146C with margin region developing tinting of
nearest RHS N187B on both adaxial and abaxial surfaces.
+ Fruit: Non-fleshy, dehiscent, many-seeded, tri-loculicidal
capsule; oblong ellipse; about 3.5 cm (1.4 in.) long and 7.0 mm in
diameter, color while maturing nearest RHS 146C and at
dehiscence nearest RHS 161B.
+ Seed: About 30 per capsule; endospermic;
flattened-elliptic wing surrounding embryo situated
toward one end of ellipse; about 8.0 mm long and 3.0 mm
wide and 1.0 mm thick at embryo; color nearest RHS 202A.
+
Disease and pest resistance and tolerance: The new plant
has not shown resistance to diseases and pests beyond
that common for Hostas. 'Coast to Coast' can
tolerate more sun than typical Hostas. The plant
grows best and shows best coloration with plenty of
moisture, adequate drainage and light shade during the
hottest period of the day, but is able to tolerate some
drought when mature and direct sun without leaf burn
when provided sufficient water. Hardiness at least from
USDA zone 3 through 9, and other disease resistance and
tolerance is typical of that of other Hostas. The
new plant is useful for landscaping en masse, as a
single specimen or small groups, and it is also useful
for cut foliage or flower arrangements.
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