This large shrub to small tree is upright with many branches that formi a dense rounded habit. It has mid green lanced-shaped leaves and the small cup-shaped white flowers appear in clusters from spring to summer followed by yellowish edible fruit. 

Hardiness zones 9 to 11 

Fortunella japonica is naturally found from southern China to Hong Kong growing in woodlands in moist well drained moderately fertile soils in an open sunny position and is frost and drought tender. 

Round Kumquat is grown for its ornamental appearance and is planted in shrub borders for screen planting or in planter boxes and patio pots. It established in 2 to 3 years and may be clipped for an informal hedge. It is commonly grown in conservatories in cool regions. ID 2184

Fortunella (for-tew-NEL-a) japonica (ja-PON-ee-kah)

Rutaceae (roo-TAY-see-ee)
Rue and Citrus Family