Rose of Sharon (Hibiscus syriacus L.) blooms in summer and is widely used as an ornamental tree because of its beautiful flowers and long flowering periods. To develop a new cultivar suitable for pot cultivation, the artificial crossing of H. syriacus cv. Hansŏ, a seed parent, and H. syriacus cv. Hongtanshim, a pollen parent, was established in 2011. Among the 19 artificially bred seedlings that bloomed in 2014, three individuals were selected by the characteristics based on flower shape, flower size, petal color, presence and size of the red eye zone, leaf characteristics, tree form, and growth of the current-year branch. After the second test on its traits for three years, one individual (NFHH05) with a unique flower shape and slow growth was selected. This individual was investigated again for uniformity and stability of trait expression, and was registered as a new cultivar under the name ‘Huiwon’ in 2022. ‘Huiwon’ has bright pink flowers with thick petals and distinct petal veins. The flowers were in full bloom and were shaped like a plate, with the tips of the petals curling outward. It begins to bloom at the beginning of July, and the average flowering period is approximately 63 d. ‘Huiwon’ has a slightly straight tree form and is a slow growing cultivar, which makes it suitable for medium-sized pot cultivation or flower gardening (Grant number 8875).

Citations

Citations to this article as recorded by  

• ‘Laon’: A Rose of Sharon (Hibiscus syriacus L.) Cultivar with a Large and Distinct Eye Zone Developed for Pot Cultivation
  Young-bum Moon, Hanna Shin
  Flower Research Journal.2025; 33(1): 53.     CrossRef
• Development and Comparison of Allometric Equations for Estimating Carbon Storage of Two Hibiscus syriacus Cultivars with Different Growth Forms in Urban Areas of Republic of Korea
  Hak-Koo Kim, Hanna Shin, Jeong-Min Lee, Seo-Hyeon Joo, Go-Eun Bang, Hyun-A Kim, Jun-Seop Lee, Seonghun Lee, Yun-Kyung Lim, Hyun-Chul Kim, Yong-Jin Kwon, Chan-Beom Kim
  Forests.2025; 16(12): 1845.     CrossRef

The ‘Jangwon’ chestnut (Castanea crenata Siebold & Zucc.) was released from Korean native chestnut trees by the Korea Forest Research Institute (KFRI) to develop cultivars with desirable nut characteristics such as high sweetness and easy peeling in 2010. This cultivar was first selected from a natural population in 2001, and the preliminary trials for evaluation were carried out from 2007 to 2009. The harvest time of ‘Jangwon’ was the second week of September and the total yield of an 8-year-old tree was 3.9 kg. Also, ‘Jangwon’ was a suitable cultivar for making roasted peeled products because its soluble solid content was 17.5%, kernel hardness was 9.6 kg·cm², and pellicle removability was 98.6%, which were much higher than those of the control cultivar, Arima. Furthermore, this cultivar is suitable as a pollinator for the improvement of pellicle removability of other chestnut trees.

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• Development of a Chestnut (Castanea crenata Siebold & Zucc.) Cultivar ‘EePi No.2’ with Superior Pellicle Removability and Large Nuts
  Hui-Won Yoo, Chul-Woo Kim
  Korean Journal of Breeding Science.2026; 58(1): 81.     CrossRef
• ‘EePi No.1’: A High-yielding Cultivar of Chestnut (Castanea crenata Siebold & Zucc.) with High Pellicle Removability
  Huiwon Yoo, Chulwoo Kim, Uk Lee, Yummi Park, Hyesoo Jung, Yonghyun Kim
  Korean Journal of Breeding Science.2025; 57(2): 199.     CrossRef