the long, slim tubular flowers that flare brilliant red around the top of the plant stem.
When an insect pollinates
a flower, or when a flower is cut from plants, the flower begins producing the plant hormone ethylene.
He found that a particular species of tiny fly breeds in and pollinates
these swamp plants and seems to transmit the rust fungus that attacks them.
When she finds a likely flower, she injects three to five eggs into the flower's ovary, and in most cases, pollinates
the flower too.
Freund explained that symptoms increase around February of each year, when trees begin to pollinate
, and don't get much better until June, when the last of the trees - the olive - pollinates