A general term for the genus Pelargonium (Japanese name: Pelargonium) in the family Geraniaceae (APG classification: Geraniaceae). It is a greenhouse perennial or subshrub. Today, in horticulture, pelargonium is a hybridization and improvement of several original species, centering on P. grandiflorum Willd., native to the Cape of Good Hope in South Africa. The representative species, P. domesticum Bailey, has a bushy, well-branched stem that grows to a height of over 50 cm. The leaves are broad-cordate or cordate with fine serrations on the edges. There are large-flowered varieties with flowers over 6 cm in diameter and small-flowered varieties with flowers about 2.5 cm in diameter, with 6 to 10 flowers in each inflorescence. The flower colors are rich and gorgeous, with dark red, red, scarlet, reddish purple, purple, wisteria purple, and white with borders or spots, and with the upper two petals and lower three petals of different colors. The flowering season in Japan is from April to the rainy season, but the petals will be damaged if exposed to rain, so it is best to plant them in pots or planters, or, for some varieties, in hanging pots, and enjoy them in places such as balconies where they will not be directly exposed to rain. Propagation is by cuttings, carried out as early as possible during the cooler months after September, so that the seedlings can grow large enough to bloom. Use coarse soil with good drainage, and grow in No. 4 or 5 pots. Overwinter at 5°C. Once the seedlings have finished blooming, transplant them into a pot one size larger and grow them larger. [Michiko Yamaguchi, August 20, 2020] [References] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
フウロソウ科(APG分類:フウロソウ科)ペラルゴニウム(和名テンジクアオイ)属の総称。温室性の多年草または亜低木。今日、園芸上でペラルゴニウムというのは、南アフリカ喜望峰(きぼうほう)原産のP. grandiflorum Willd.を中心に数種の原種を交配、改良したものである。代表種であるナツザキテンジクアオイP. domesticum Baileyは、茎はよく分枝して茂り、高さ50センチメートル以上になる。葉は広心臓形または心臓形で、縁(へり)に細かい鋸歯(きょし)がある。花径6センチメートル以上に及ぶ大輪系と約2.5センチメートルの小輪系があり、一花房に6~10個の花を開く。花色は黒赤、赤、緋赤(ひせき)、赤紫、紫、藤紫(ふじむらさき)、白色をもとにして覆輪や斑(ふ)入り、また上2弁と下3弁の色違いのものなど変化に富み、華やかである。開花期は日本では4月から梅雨期までであるが、雨に当たると花弁が傷むので、鉢植えやプランター植え、また品種によっては吊(つ)り鉢植えとし、ベランダなど直接雨に当たらないところで観賞するとよい。 繁殖は挿木により、9月以降の涼しい時期にできるだけ早く行い、開花までに苗を大きく育てるようにする。排水のよい粗粒の用土を用い、4、5号鉢で育てる。越冬温度は5℃。開花の終わった苗は、一回り大きな鉢に移植し、大きく育てる。 [山口美智子 2020年8月20日] [参照項目] |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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