it's a matter of how the owners maintain them. alot of people have 5 minute "fever" only.. start that time.. so enthusiastic.. regularly trim, water or fertilize..
as time goes by, they sian already.. ah.... don't bother! wait for rainy days, the rain will water. mosquitoes.. heck care, as long as i close my main door. there are alot of people like that, i won't be surprised.
plants are for adults as to pets are for kids.
i enjoy greenery myself (was in the gardening ECA for a few years when I was in primary school). the stones and pebbles landscape outside my house is my work. and i enjoy planting some low-maintenance plants. thankfully.. though i'm undisciplined to watering plants.. my parents are..
![stick tongue](http://www.punggol.sg/forum/Smileys/default/sbox_funny.gif)
so everyone in the family helps out here and there.