According to Yeh Chin-lung, the head of the group, back in black tea's glory days, Yuchih had about 1800 hectares in tea versus only some 400 hectares today. Tayen Village currently grows black tea on 60 hectares, ten of which are given over to TTSE No. 18.
產銷班班長葉金龍說，早年魚池紅茶量大時，紅茶栽種面積曾達 1800 公頃，現在僅剩四百多公頃，目前紅茶面積約為 60 公頃，台茶 18 號佔了十幾公頃。