Nectar is produced by flowers to attract insects, bats or birds that will help to carry its pollen to other plants (and bring fresh pollen to it). If a plant is pollinated in the wind, then it doesn't need to spend the energy to make nectar.
Nectar is made by flowers to attract insects so that they can be pollinated. Wind pollinated flowers do not need insects so making nectar would be a waste of energy.
......................
It's bright and showy, and even has little nectar ducts under its petals, so insect-pollinated. Wind-pollinated plants generally don't have flowers, or the flowers are very small and inconspicuous, like those of grass. Wind-pollinated plants also make far more pollen (try tapping a pine tree or reed in spring) because the wind does not take it directly to its destination, much of it will be lost. With insects there's a fair chance the little there is will reach another flower of the same species.
Flowers secrete nectar near the ovary so that they are pollinated. Nectar is usually replenished in twenty minutes after a pollinator such as a bee or hummingbird visits. The sugar is actually made in the leaves created by photosynthesis.
Water milfoil is a flowering plant despite living in water. Its flowers need to be pollinated in order for it to make seeds. It is wind pollinated so the flowers need to be above the water.
The bee fertilizes the flowers ovules so that it can make seeds and reproduce. In return the bee is given food - nectar and pollen.,
Bees make honey from nectar gathered from flowers. If there are no nectar-bearing flowers available, then the bees can't make honey. Nor will there be any nectar to feed on, so they will feed on their stored honey.
The anther makes the pollen I think, but you might wanna check though.
by flowers
Whenever they can collect nectar. This depends on the weather; air temperature; availability of nectar-bearing flowers and, indeed, whether those flowers have nectar (they won't, for instance, in a drought).
Flowers make nectar and as far as I know it can't be made artificially.
By the Wind and the pollen. Because the wind carries the pollen over plants flower and all other things that grow!
Bees make honey using nectar from flowers
flowers, fruit, seed pods......whatever that specific plant makes, it will only make if its BEEn pollinated