▁It ▁has ▁also ▁been ▁grown ▁in ▁the ▁B ố ▁H ạ ▁region ▁of ▁Y ên ▁Th ế ▁( Y ên ▁District ) ▁of ▁B ắ c ▁Gi ang ▁Province , ▁but ▁had ▁been ▁er adic ated ▁due ▁to ▁the ▁cit rus ▁green ing ▁disease . ▁Now ad ays , ▁cam ▁s àn h ▁is ▁plant ed ▁widely ▁in ▁n ort he astern ▁Vietnam ▁( part icular ly ▁H à ▁Gi ang , ▁T uy ên ▁Qu ang , ▁and ▁Y ên ▁B á i ), ▁as ▁well ▁as ▁in ▁several ▁provinces ▁of ▁the ▁M ek ong ▁D elta ▁in ▁the ▁south , ▁including ▁V ĩ n h ▁Long , ▁C ầ n ▁Th ơ , ▁and ▁Ti ề n ▁Gi ang . ▁ ▁Cult iv ation ▁ ▁It ▁pre fers ▁all uv ial ▁soil , ▁and ▁a ▁cool , ▁mo ist ▁climate , ▁but ▁is ▁widely ▁adapt able , ▁and ▁does ▁well ▁at ▁compar atively ▁high ▁alt itudes . ▁Y ield ▁is ▁high , ▁with ▁an ▁average ▁fruit ▁weight ▁of ▁ 1 5 0 – 2 5 0   g . ▁ ▁References ▁ ▁Category : C it rus ▁hy br ids <0x0A> </s> ▁Richmond ▁Low lands ▁is ▁a ▁town ▁of ▁Sydney , ▁in ▁the ▁state ▁of ▁New ▁South ▁Wales , ▁Australia . ▁It ▁is ▁located ▁in ▁the ▁City ▁of ▁Haw kes bury ▁south - west ▁of ▁Fre em ans ▁Re ach . ▁ ▁At ▁the ▁, ▁the ▁population ▁of ▁Richmond ▁Low lands ▁was ▁ 2 2 0 . ▁ ▁There ▁is ▁a