View source for Rodgersia

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Rodgersia (named in honor of Commodore Rodgers, United States Navy). 
Saxifragaceae. Hardy herbaceous perennials suitable for garden 
planting, with showy terminal flower-clusters.

Rootstocks horizontal, thick and black : lvs. alternate, large, 
peltate or digitately or pinnately compound, usually dark green: infl. 
tall and variously compound, paniculate; fls. very numerous, small: 
calyx-lobes 5; petals usually none; ovary 2-3 celled.—About 8 species, 
China and Japan. Botanically Rodgersia is close to certain species of 
Astilbe, having 10 stamens and no petals; it differs in having connate 
carpels, scorpioid infl. and 5-cut rather than thrice-ternate foliage.

Perhaps the best-known species is R. podophylla, as it was the first 
introduced into cultivation. It grows 3 to 4 feet high, and the leaves 
are finger-shaped, the five lobes being bold in outline, angled, and 
serrate. In the spring the foliage is light green; in summer it 
assumes a metallic bronzy hue. The plant is a vigorous grower, and 
under favorable circumstances has been known to make a clump 9 feet in 
diameter, the largest leaves being a yard across and borne on stalks 3 
feet long. The flowers are borne in midsummer on stalks 4 to 5 feet 
high. The general style of inflorescence is that of the popular 
astilbe, to which it is closely allied. The flowers are very small, 
but make a feathery spray of fluffy white bloom. The panicle is a foot 
or more long and as wide at the base. Technically the flowers have no 
petals; what seem to be petals are the white calyx- segments. As a 
flowering plant it has been said by enthusiasts to be superior to 
astilbe, but the bloom is scantier, rather greenish at first, and 
perhaps does not last so long. It may not be so amenable to forcing. 
Rodgersia is a native of the subalpine regions of Japan and is 
presumably hardy in our northern states. It is offered by importers of 
Japanese plants. The plant is highly esteemed by English connoisseurs, 
but seems to be nearly unknown to American gardens. Although any deep 
rich garden soil will do, it is said to prefer a moist peaty soil. It 
should be placed in a sunny position, with plenty of room, where high 
winds cannot damage it. Easily propagated. (Wilhelm Miller.)
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==Cultivation==
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===Propagation===
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===Pests and diseases===
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==Species==
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==Gallery==
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==References==
*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963
<!--- xxxxx  *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381  -->
<!--- xxxxx  *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432  -->
<!--- xxxxx  *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608  -->

==External links==
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