An aphid lands on a rosebud, on which it feeds by driving its beak into the stem and drawing up sap.  The sap is digested by the insect and made into a sugary syrup, honeydew, which it discharges through two tubes on its back.  Ants eat the honeydew by stroking the aphid.  On a rose leaf, ants pull the legs of another insect in rivalry for the honeydew.
Aphids produce young every ninety minutes.  A young aphid sheds its first coat of membrane.  Young aphids cluster on a stem - all the result of one aphid reproducing over 24 hours.  After a week, the stem is clustered with aphids - all from the same mother.  Fly and ladybird larvae on the same stem eat the aphids.  The ladybird sucks it dry without chewing it.
A fully grown aphid opens its wings and flies to a new rose shoot, to start a new colony.  Dock leaves curl under the weight of the aphids, and the curled leaf protects them.  Male and female aphids mate on a stem, and produce torpedo-shaped eggs.
A  gardener sprays his bean plants, and the roots of his roses.