koelreut

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KOELREUTERIA
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Koelreuteria bipinnata showing its pretty salmon-rose lanterns along with the last of the medium yellow, open panicled flowers. If you look very close the row of K. paniculata across this street have brown, dried fruit and have been so for a full 6-8 weeks, some of them later than others. This lovely species is not rare but it is uncommon among the two species introduced from China. It will be new to most designers and nurseryman and can be recommended as one of the finest fall-blooming and fall-fruiting trees. There are few more valuable yellow-flowering trees of any chronology or size.

The fruit can be collected in this early pink stage, dried, and most of the pretty pigment will persist. The species is quite durable in zones 6 and warmer and I know that rules out some of your gardens and clients. Plants tend to bloom fairly young, even in 5 gallon containers. The species is so fruitful, seedling-scattering, and tough there is some concern it could be a weed tree in the next generation. Our experience shows that in your basic urban, commercial setting there is no real problem. A country arboretum or warm rural garden with adjacent woodlands might think twice about this fertile beauty.

Click on this image for larger version.

LCH

'Beachmaster' - click image to enlarge
Raulston Arboretum. June 2003. Blooming with the earliest of the species' seedlings (some are a week or more later), this
half pint version of the wonderful species is more useful still. Name another dwarf tree with gold flowers in summer that is
cold hardy in most states and countries?

Koelreuteria paniculata 'Beachmaster'
ht: 8 ft. tall x 8-10 ft. wide (10 years)
ha: compact, semi-dwarf, half species height or less
fq: floriferous, as good as species typical
in: J.C. Raulston to US nursery trade 1990's.

Koelreuteria paniculata CORAL SUN® (5/3)
lc: pinkish-red new growth, very bright and showy, later yellowish-green with red petioles
in, so: H Kolster (online catalog 2003)

'Fastigiata' - click image to enlarge
Dawes Arboretum. Summer 2003. It takes decades (if ever) for the cultivar to become full and dense. The bases are often sparsely leaved.

Koelreuteria paniculata 'Fastigiata'
ha: narrowly columnar
fq: unfortunately they're sparse and reside at the narrow top where they are barely seen.
or: chance seedling at Kew Gardens UK in 1888. The seedstock was from Shangai.
in: c. 1957 to US trade. lsp: original tree existed in 1973 at Ruined Arch of Kew Gardens
li: Bean, W.J. 1929. Kew Bull. Misc. Inf. 4: 101. (as var.)"
li: Krussman, G. 1960. Hand. Laub. 43."
li: Meyer, F.G. 1976. A revision of the genus Koelreuteria. J. Arnold
li: Arb. 57(2): 149.

Koelreuteria paniculata 'Girard'
ft: sterile
bt: September - or much later. Since the species blooms in early June in warmer climates, it is
bt: apt to be more towards August there.
rai: should be compared to 'September'
or: Girard Nurseries

Koelreuteria paniculata 'Rose Lanterns'
frc: maturing fruit ('lanterns') bright pink and showy. Seedlings of
frc: the species vary in shades of green, yellow, and pink with this clone
frc: being one reliably towards the red-pigmented side of spectrum.
bt: September (Arnold Arb.)
ns: reported confused with the original 'September'.
li: Santamour, F.S. and S.A. Spongberg. 1996. Koelreuteria paniculata
li: 'Rose Lantern'. Arnoldia 56(2): 32-37.

Koelreuteria paniculata 'Rosseels'
bt: blooms even on young plants
so: wholesale source (Firma C. Esveld)

Koelreuteria paniculata 'September'
bt: app. 2 weeks later than typical (June-August) and often September
bt: original tree was reported to start on August 25th in Bloomington IL
it: inflor. larger and very densely branched.
so: Louisiana Nursery
or: Dr. J.C. McDaniel of Univ. of IL found on Bloomington campus in 1958
or: or 1960
ns: late-blooming occurs in seedling populations so 'September' and 'Girard'
ns: could easily be joined by other named variants.
prop: late-flowering according to McDaniel occurs in some seedlings.
hp: considered as possibly cross to K. bipinnata
hsp: clonotype designed by Meyer as Meyer & Terrell 12459 (NA)
in: Scanlon Nur. of OH c. 1967
aw: Styler Award 1997 - Penn. Hort. Soc.
li: McDaniel, J.C. and March. 1967. Amer. Hort. Mag. 46(2): 95-96.
li: Wyman, D. 1967. More plant registrations. Arnoldia 27(8): 64.
li: Meyer, F.G. 1976. A revision of the genus Koelreuteria. J. Arnold
li: Arb. 57(2): 149.
li: Dirr, M. 1991. Nursery Manager 7(9): 36

Koelreuteria paniculata 'September Gold' = 'September'
tm: this name has been trademarked
ns: the name 'September' has been validly published and must be retained.
li: Jacobson, A.L. 1996. North American landscape trees. Ten Speed Press,
li: Berkeley, California. p. 76

Koelreuteria paniculata 'Stadher's Hill'
frc: deep red - showy
or: Louisiana Nur.
li: Dirr, M. 1998. Man. Woody Land. Plts. Stipes Publishing. Champaign, IL. p. 534.