2024 年 87 巻 5 号 p. 361-366
In this study, we conducted a survey of the growth distribution of spider plants (Chlorophytum comosum) in Yawata City and Kyoto City, Kyoto Prefecture. After investigating distribution trends and growth conditions in each region, we will measure winter temperatures and compare them with measurement results from the weather observatories to verify and discuss to what extent they are resistant to winter low temperatures. The plant distribution was surveyed in January, November, and December 2021. Temperature measurements were taken from January to February 2021 and from December 2021 to March 2022. As a result of the survey, 326 strains at 23 locations in the east Otokoyama district of Yawata City, 297 strains at 38 locations around the city hall of Yawata City, and 802 strains at 40 locations in Kawaramachi-dori, Kyoto City were confirmed. In Yawata City, it was widely distributed in residential areas, but in Kawaramachi-dori, Kyoto City, the uneven distribution was remarkable, and dense growth was confirmed in the southern area near the residential area. Based on the measured minimum temperature and estimated past minimum temperature, the spider plants in Yawata City can withstand low temperatures of -3.5 to -4.6℃, and the spider plants in Kyoto City can withstand low temperatures of -2.8 to -4.5℃.