high-maintenance 
adjective
1Needing a lot of work to keep in good condition.Unless you have a sweeping carriage drive or a generous south-facing frontage, be prepared to forgo grass; high-maintenance lawns belong in the open, sunny space of the back garden....
- I'll likely sell it within the next few months as I find it a pretty high-maintenance gadget - there are just too many things that can go wrong, and it needs constant checking.
- The first rule is, if you haven't much time then don't make the front garden a copy of your back garden, with high-maintenance beds, lawns and boundaries.
1.1 informal (Of a person) demanding a lot of attention: if Martin could keep a high-maintenance girl like Tania happy, he must be doing something right...
- She is the most high-maintenance person who ever lived, throwing tantrums at the least provocation: ‘I haven't had a bath for seven hours!
- I've been with some high-maintenance women in my time but my daughter takes the biscuit.
- So, now I've written a book about the decline of my neighbourhood and the lives of its new, high-maintenance residents.