Where I live enjoys a sub tropical climate at sea level and never frosts, so there is always something always in flower. From my experience I dont see periods of great nectar collection as you may in the agricultural areas further away from the city. But the city does have a lot of green space with native forests intersperced with housing. Everyone seems to grow trees and shrubs all of which flower at different times of the year. Hence the bees always fly and always have something to bring home.
We dont have many native trees that would be classified as oaks. What we call Shea Oak is actually Casuarina but it does have the male tree dropping pollen at this time of the year. However, at the same time our other natives are flowering.. the melaleuca and acacias have flowered about a month ago, the grevilleas are in flower now and they are great nectar sources, as are the callistamen which are still to flower. The different eucalypts flower at different times of the year but the majority still have to come.
So it is difficult to say that the spring flush will be led here by pollen drop. There is heaps of pollen in the hives but it is all different colours so it is hard to say where it has come from. The nectar has been coming in all time so there is obviously a source somewhere close by but I dont know what it is. Hence the tag "mixed urban flora".... it seems to be the most appropriate generic term for what I have in the hives.
As for coffee..... growing your own
It is really, really, really time consuming.. a lot of work for a few cups.
Makes you wonder if it worth all the effort of trying to be green :?
Mick